Bel Power Solutions 的 PSK, PSS Series 规格书

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BCD20029-G Rev AE, 31-Jan-2019

PSK / PSS Series

Positive Switching Regulators

Features

• RoHS lead-free-solder and lead-solder-exempted

products are available

• 5 year warranty for RoHS compliant products with an

extended temperature range

• Input voltage up to 144 VDC

• Single output of 5.1 to 48 VDC

• No input-to-output isolation

• High efficiency up to 97%

• Extremely wide input voltage range

• Low input-to-output differential voltage

• Very good dynamic properties

• Input undervoltage lockout

• Active current sharing for parallel operation

• Output voltage adjustment, inhibit, and sense lines

• Continuously no-load and short-circuit proof

• All boards are coated with a protective lacquer

Safety-approved to the latest edition of IEC/EN 60950-1

and UL/CSA 60950-1

Table of Contents

Description............................................................................1

Model Selection ....................................................................2

Functional Description ..........................................................3

Electrical Input Data .............................................................4

Electrical Output Data...........................................................6

Auxiliary Functions .............................................................12

Electromagnetic Compatibility (EMC) ................................. 14

Mechanical Data ................................................................. 15

Immunity to Environmental Conditions ...............................16

Safety and Installation Instructions ..................................... 19

Description of Options ........................................................20

Accessories ........................................................................21

The PSK/PSS Series of positive switching regulators is de-

signed as power supplies for electronic systems, where no

input-to-output isolation is required. Their major advantages in-

clude a high level of efficiency, high reliability, low output ripple,

and excellent dynamic response. Models with input voltages

up to 144 V are specially designed for secondary switched and

battery-driven mobile applications. The con verters are suitable

for railway applications according to EN 50155 and EN 50121.

Two types of housing are available allowing operation up to

71 °C. They are designed for insertion into a 19" DIN-rack or

for chassis mounting. Replacing the heat sink by an optional

cooling plate, allows chassis or wall mounting on top of a metal

surface, acting as heat sink.

Various options are available to adapt the converter to differ-

ent applications. Connector type: H15 or H15S4, depending on

output current.

168

6.6"

3.2"

16 TE

111

4.4"

3 U

168

6.6"

2.4"

12 TE

111

4.4"

3 U

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PSK / PSS Series

Positive Switching Regulators

Model Selection

Table 1: Model Selection

Output

voltage

Output

current

Operating input

voltage range

Nom. input

voltage

Efficiency 2 Type

designation 4

Connector

type

Options

Vo nom [V] Io nom [A] Vi [V] Vo nom [V] ηmin [%] ηmax [%]

5.1 20 8 - 80 40 78 79 PSK5A20-9ECKG H15 B, B1

18 - 144 1

15 - 80

18 - 144 1

15 - 80

PSS129-9G

PSS1212-9G

PSK1212-9G

PSK1216-9G

PSK1220-9G

H15

H15S4

-7, E, B, B1

B, B1

-7, E, C, B, B1

-7, E, C, K, B, B1

15 3

22 - 144 1

19 - 80

22 - 144 1

19 - 80

PSS129-9G

PSS1212-9G

PSK1212-9G

PSK1216-9G

PSK1220-9G

H15

H15S4

E, B, B1

-7, E, B, B1

-7, E, C, B, B1

-7, E, C, K, B, B1

31 - 144 1

29 - 80

31 - 144 1

29 - 60

29 - 80

93.5

94.5

93.5

PSS249-9G

PSS2412-9G

PSK2412-9G

PSS2414-2G

PSK2416-9G

PSK2420-9G

H15

H15S4

-7, E, C, B, B1

-7, E, B, B1

-7, E, C, B, B1

B, B1

-7, E, C, B, B1

-7, E, C, K, B, B1

44 - 144 1

42 - 80

44 - 144 1

42 - 80

94.5

PSS369-9G

PSS3612-9G

PSK3612-9G

PSK3616-9G

PSK3620-9G

H15

H15S4

-7, E, B, B1

B, B1

-7, E, C, B, B1

-7, E, C, K, B, B1

48 12 58 - 144 1 80 96 97 PSK4812-9G H15 -7, E, C, B, B1

1 Surges up to 156 V for 2 s; see Electrical Input Data

2 Efficiency at Vi nom and Io nom. Models with opt. K (standard H15 connector) exhibit approx. 1 to 2% lower efficiency.

3 Output voltage Vo set to 15 V by R input.

4 Part numbers without suffix ‘G’ use the leaded solder exemption.

Note: Non-standard input/output configurations or special custom adaptations are available on request.

NFND: Not for new designs. Preferred for new designs.

Part Number Description

Positive switching regulator in case S01, K01 ........PSS, PSK

Nominal output voltage in Volt .................................... 5.1 – 48

Nominal output current in Ampere ................................. 9 – 25

Operational ambient temperature range TA

– 10 to 50 °C ......................................................-2

–25 to 71 °C ......................................................-7

– 40 to 71 °C (optional) ......................................-9

Options: Inrush current limitation .......................................E

Thyristor crowbar ................................................ C

Standard H15 connector .....................................K

Cooling plate large/small .............................. B, B1

RoHS-compliant for all 6 substances ............... G2

PSK 12 12 -9 E C B G

1 Option P excludes R-features and vice versa.

2 G is always placed at the end of the part number.

Example: PSS129-9ECB = Positive switching regulator with output 12 V, 9 A, ambient temperature range of –25 to 71 °C, inrush

current limitation, crowbar, and large cooling plate option B.

Note: The sequence of options must follow the order above.

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PSK / PSS Series

Positive Switching Regulators

Product Marking

Type designation, applicable approvals marks, warnings, pin allocation, identification of LED, test sockets, and optional potentiometer.

Label with input voltage range, output voltage and current, protection degree, batch and serial no., and data code including production

site, version, and date of production.

Functional Description

The switching regulators are using the buck topology. The input is not electrically isolated from the output. During the on period of

the switching FET, current is transferred to the output, and energy is stored in the output choke. During the off period, this energy

forces the current to continue flowing through the output choke and the freewheeling diode to the load. Regulation is accomplished

by varying on/off duty cycle. Switching frequency is approx. 100 kHz. The converters exhibit an undervoltage monitor to prevent

high currents at low input voltage, but no overvoltage monitor.

These regulators are ideal for applications, where an input to output isolation is not necessary or where it is already provided by an

external front end, e.g. a transformer with rectifier. To optimize customers’ needs, various options and accessories are available.

Control

circuit

Go–

Vo+

Gi–

Vi+

03024a

Input Filter

S+

S–

Option P

Option C

Option E

–

Fuse

Fig. 1

Block diagram

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PSK / PSS Series

Positive Switching Regulators

Electrical Input Data

Table 2a: Input data. General Conditions: TA = 25 °C, unless TC is specified

Model PSS2414 PSK5A20

PSS1212

PSK1216

PSK1220

Unit

Characteristics Conditions min typ max min typ max min typ max

ViOperating input voltage Io = 0 – Io nom,

TC min – TC max

29 60 880 15 80

VDC∆Vio min Min. diff. voltage Vi – Vo52.9 3

Vi o Undervoltage lockout 12 6.5 7.3

Ii 0 No-load input current Io = 0, Vi min – Vi max 50 50 50 mA

Iinr p Inrush peak current Vi nom, with option E 40 40 40 A

CiInput capacitance 1600 1600 1600 µF

Table 2b: Input data. General Conditions: TA = 25 °C, unless TC is specified

Model

PSS1212 1

PSK1216 1

PSK1220 1

PSS2412

PSK2416

PSK2420

PSS3612

PSK3616

PSK3620

Unit

Characteristics Conditions min typ max min typ max min typ max

ViOperating input voltage 1

Io = 0 – Io nom,

TC min – TC max

19 80 29 80 42 80

VDC∆Vio min Min. diff. voltage Vi – Vo4 5 6

Vi o Undervoltage lockout 7.3 12 19

Ii 0 No-load input current Io = 0, Vi min – Vi max 50 50 50 mA

Iinr p Inrush peak current Vi nom, with option E 40 50 90 A

CiInput capacitance 1600 1600 1600 µF

1 Output set to 15 V with the R-input.

Table 2c: Input data. General Conditions: TA = 25 °C, unless TC is specified

Model PSS129 / PSK1212 PSS129 1 / PSK1212 1 PSS249 / PSK2412 Unit

Characteristics Conditions min typ max min typ max min typ max

ViOperating input voltage 1

Io = 0 – Io nom,

TC min – TC max

18 144 2 22 144 2 31 144 2

VDC∆Vio min Min. diff. voltage Vi – Vo67 7

Vi o Undervoltage lockout 12 12 24

Ii 0 No-load input current Io = 0, Vi min – Vi max 50 50 50 mA

Iinr p Inrush peak current Vi nom, with option E 4.5 4.5 4.5 A

CiInput capacitance 620 620 620 µF

1 Output set to 15 V with the R-input.

2 Surges up to 156 V for 2 s are allowed (no shutdown).

Table 2d: Input data. General Conditions: TA = 25 °C, unless TC is specified

Model PSS369 / PSK3612 PSK4812 Unit

Characteristics Conditions min typ max min typ max

ViOperating input voltage 1

Io = 0 – Io nom,

TC min – TC max

18 144 2 22 144 2

VDC∆Vio min Min. diff. voltage Vi – Vo810

Vi o Undervoltage lockout 36 48

Ii 0 No-load input current Io = 0, Vi min – Vi max 50 50 mA

Iinr p Inrush peak current Vi nom, with option E 6 6 A

CiInput capacitance 620 620 µF

1 Surges up to 156 V for 2 s are allowed (no shutdown).

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PSK / PSS Series

Positive Switching Regulators

Input Filter and Fuse

An input filter and a fuse are incorporated in all converters as standard. The filter reduces emitted electrical noise and prevents

oscillations caused by the negative input impedance characteristic of a switched mode regulator. The input fuse protects against

fatal defects; see table 3.

Table 3: Input fuses

Model Fuse type Size Supplier

PSK5A20

PSK1220, PSK2420, PSK3620 F 25 A

6.3 x 32 mm Littlefuse

PSK1216

PSK2416, PSK2418, PSK3620 F 20 A

PSS1212, PSK1212

PSS2412, PSK2412

PSS3612, PSK3612, PSK3616

PSK4812

F 15 A

PSS129, PSS249, PSS369 F 10 A

The maximum permissible additionally superimposed ripple vi of the input voltage (rectifier mode) at a specified input frequency

fi has the following values:

vi max = 1000 Hz /fi • 1 V (or 10 Vpp at 100 Hz)

Inrush Current

Depending on the input source and the input impedance, the inrush current into the converter may reach a high peak value during

the switch-on. The inrush current peak value can be determined by following calculation; see also fig. 2:

Vi+

Vi–

Vo+

Vo–

ext

JM001c

Load

Converter

Fig. 2

Equivalent input circuit

Vi source

Iinr p = _________

(Rs ext + Ri )

To limit the inrush current, we recommend the choice of the active inrush current limitation circuit, option E.

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PSK / PSS Series

Positive Switching Regulators

Electrical Out put Data

General conditions:

– TA = 25 °C, unless TC is specified

– R-input open (or Vo set to Vo nom with option P)

Table 3a: Output data of PSS models

Output PSS5A12 PSS1212 PSS1212 1 Unit

Characteristics Conditions min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 5.07 5.13 11.93 12.07 14.91 15.09 V

Io Output current Vi min – Vi max

TC min – TC max

0 12 0 12 0 12 A

IoL Output current limitation 12 15 12 15 12 15

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

20 40 20 45 30 50

mVpp

Total incl. spikes 24 44 29 49 34 54

∆Vo V Static line regulation Vi min – Vi max, Io nom 15 35 40 70 50 80

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 10 25 30 50 35 55

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

70 140 150

t d Recovery time 40 60 60 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±1 ±3 ±4 mV/K

±0.02 ±0.02 ±0.02 %/K

1 Output set to 15 V with R-input.

Table 3b: Output data of PSS models. General conditions as per table 3a

Output PSS2412 PSS2414 PSS3612 Unit

Characteristics Conditions min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 23.86 24.14 23.2 24.7 35.78 36.22 V

Io Output current Vi min – Vi max

TC min – TC max

0 12 0 14 0 12 A

IoL Output current limitation 12 15 14 17.5 12 15

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

30 40 300 35 60

mVpp

Total incl. spikes 34 44 310 39 64

∆Vo V Static line regulation Vi min – Vi max , Io nom 80 35 480 120 250

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 50 25 240 60 200

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

180 700 200

t d Recovery time 60 60 70 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±5 ±5 ±8 mV/K

±0.02 ±0.02 ±0.02 %/K

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PSK / PSS Series

Positive Switching Regulators

Table 3c: Output data of PSS models. General conditions as per table 3a

Output PSS129 PSS129 1 PSS249 Unit

Characteristics Conditions min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 11.93 12.07 14.91 15.09 23.86 24.14 V

Io Output current Vi min – Vi max

TC min – TC max

090909A

IoL Output current limitation 911.25 19 11.25 911.25

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

25 50 20 45 30 50

mVpp

Total incl. spikes 29 54 34 64 39 65

∆Vo V Static line regulation Vi min – Vi max, Io nom 40 70 50 80 80 170

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 30 50 40 60 50 120

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

140 140 180

t d Recovery time 60 60 60 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±3 ±4 ±5 mV/K

±0.02 ±0.02 ±0.02 %/K

1 Output set to 15 V with R-input.

Table 3d: Output data of PSS models. General conditions as per table 3a

Output PSS369 PSS489 Unit

Characteristics Conditions min typ max min typ max

VoOutput voltage Vi nom, Io nom 35.78 36.22 47.71 48.29 V

Io Output current Vi min – Vi max

TC min – TC max

0909A

IoL Output current limitation 911.25 911.25

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

35 60 35 60

mVpp

Total incl. spikes 39 64 39 64

∆Vo V Static line regulation Vi min – Vi max, Io nom 120 250 150 350

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 60 120 70 150

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

200 200

t d Recovery time 70 70 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±5 ±4 mV/K

±0.02 ±0.02 %/K

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PSK / PSS Series

Positive Switching Regulators

Table 4a: Output data of PSK models. General conditions as per table 3a

Output PSK5A16 PSK5A20 PSK5A25 Unit

Characteristics Conditions min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 5.07 5.13 5.07 5.13 5.07 5.13 V

Io Output current Vi min – Vi max

TC min – TC max

016 020 025 A

IoL Output current limitation 16 20 20 25 25 31.5

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

20 40 20 40 20 40

mVpp

Total incl. spikes 24 44 24 44 24 44

∆Vo V Static line regulation Vi min – Vi max, Io nom 15 35 15 35 15 35

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 10 25 10 25 10 25

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

70 70 70

t d Recovery time 40 40 40 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±1 ±1 ±1 mV/K

±0.02 ±0.02 ±0.02 %/K

Table 4b: Output data of PSK models. General conditions as per table 3a

Output PSK1216 PSK1220 PSK1216 1 PSK1216 1 Unit

Characteristics Conditions min typ max min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 11.93 12.07 11.93 12.07 14.91 15.09 14.91 15.09 V

Io Output current Vi min – Vi max

TC min – TC max

0 16 0 20 0 16 0 20 A

IoL Output current limitation 16 20 20 25 16 20 20 25

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

25 45 25 45 30 50 30 50

mVpp

Total incl. spikes 29 49 29 49 34 54 34 54

∆Vo V Static line regulation Vi min – Vi max , Io nom 40 70 40 70 50 80 50 80

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 30 50 30 50 35 55 35 55

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

140 140 150 150

t d Recovery time 60 60 60 60 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±3 ±3 ±4 ±4 mV/K

±0.02 ±0.02 ±0.02 ±0.02 %/K

1 Output set to 15 V with R-input.

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PSK / PSS Series

Positive Switching Regulators

Table 4c: Output data of PSK models. General conditions as per table 3a

Output PSK2416 PPSK2420 PSK3616 PSK3620 Unit

Characteristics Conditions min typ max min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 23.86 24.14 23.86 24.14 35.78 36.22 35.78 36.22 V

Io Output current Vi min – Vi max

TC min – TC max

0 16 0 20 0 16 0 20 A

IoL Output current limitation 16 20 20 25 16 20 20 25

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

30 60 30 60 35 60 35 60

mVpp

Total incl. spikes 34 64 34 64 39 64 39 64

∆Vo V Static line regulation Vi min – Vi max , Io nom 80 170 80 170 120 250 120 250

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 50 120 50 120 60 120 60 120

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

180 500 200 200

t d Recovery time 60 2000 70 70 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±5 ±5 ±8 ±8 mV/K

±0.02 ±0.02 ±0.02 ±0.02 %/K

Table 4d: Output data of PSK models. General conditions as per table 3a

Output PSK1212 PSK1212 1 PSK2412 Unit

Characteristics Conditions min typ max min typ max min typ max

VoOutput voltage Vi nom, Io nom 11.93 12.07 14.91 15.09 23.86 24.14 V

Io Output current Vi min – Vi max

TC min – TC max

0 12 0 12 0 12 A

IoL Output current limitation 12 15 12 15 12 15

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

25 50 30 60 35 60

mVpp

Total incl. spikes 29 54 34 64 39 65

∆Vo V Static line regulation Vi min – Vi max , Io nom 40 70 50 80 80 170

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 30 50 40 60 50 120

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

140 140 180

t d Recovery time 60 60 60 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±3 ±4 ±5 mV/K

±0.02 ±0.02 ±0.02 %/K

1 Output set to 15 V with R-input.

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PSK / PSS Series

Positive Switching Regulators

Table 4e: Output data of PSK models. General conditions as per table 3a

Output PSK3612 PSK4812 Unit

Characteristics Conditions min typ max min typ max

VoOutput voltage Vi nom, Io nom 35.78 36.22 47.71 48.29 V

Io Output current Vi min – Vi max

TC min – TC max

0 12 0 12 A

IoL Output current limitation 12 15 12 15

Output

voltage

noise

Switching freq. Vi nom, Io nom

IEC/EN 61204

BW = 20 MHz

35 60 35 60

mVpp

Total incl. spikes 39 64 39 64

∆Vo V Static line regulation Vi min – Vi max , Io nom 120 250 150 350

∆Vo l Static load regulation Vi nom, Io = 0 – Io nom 60 120 70 150

Vo d Dynamic

load

regulation

Voltage

deviation

Vi nom

Io nom ↔ 1/3

Io nom

IEC/EN 61204

200 200

t d Recovery time 70 70 µs

αVo

Temperature coefficient

∆Vo/∆TC (TC min to TC max)

Vi min – Vi max

Io = 0 – Io nom

±5 ±4 mV/K

±0.02 ±0.02 %/K

Output Voltage Regulation

The dynamic load regulation is shown in fig. 3:

±1% V

±1%

≥ 10 µs ≥ 10 µs

0.5

o nom

05102c

Fig. 3

Dynamic load regulation.

Current Limitation

A constant current limitation circuit holds the output current Io almost constant in the area of 100 to 120% of Io nom, when an overload

or a short-circuit is applied to the output. It acts self-protecting and recovers – in contrary to the fold back method – automatically

after removal of the overload or short-circuit condition.

1.0

0.8

0.6

0.4

00.2 0.4 1.0 1.2

0.2

0.6 0.8

o nom

o L

05038a

Fig. 4

Overload, short-circuit behavior Vo versus Io.

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PSK / PSS Series

Positive Switching Regulators

Output Protection

A voltage suppressor diode, which in worst case conditions fails into a short-circuit, protects the output against an internally

generated overvoltage. Such an overvoltage could occur due to a failure of either the control circuit or the switching transistor. The

output protection is not designed to withstand externally applied overvoltages.

Parallel and Series Connection

Outputs of equal nominal voltage may be parallel-connected. Interconnect the current sharing pins T (pin 22) for even distribution

of the output current; see Auxiliary Functions.

Outputs can be series-connected with any other regulator, provided that the regulators are powered by electrically isolated sourc e

voltages. In series connection the maximum output current is limited by the lowest current limitation.

Thermal Considerations and Protection

When a switching regulator is located in free, quasi-stationary air (convection cooling) at a temperature TA max and is operated at its

nominal output current Io nom, the case temperature TC can rise over TC max after the warm-up phase. TC is measured at the measuring

point of case temperature; see Mechanical Data.

Under practical operating conditions, the ambient temperature TA may exceed TA max, provided that additional measures (heat sink,

forced cooling, etc.) are taken to ensure that the case temperature TC does not exceed its maximum value.

The regulator is protected by an internal temperature sensor, which inhibits the output above TC max. The output auto matically

recovers, when the temperature drops below TC max.

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

40 60 70 80 °C

0.9

1.0

forced

cooling

C max

convection cooling

A min

05032a

o nom

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

50 60 70 80 90 °C

o nom

1.0

forced

cooling

A min

C max

convection cooling

0.9

05031a

Fig. 5a

Output current derating versus temperature (models -2)

Fig. 5b

Output current derating versus temp. (models -7 or -9)

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PSK / PSS Series

Positive Switching Regulators

Auxiliary Functions

Inhibit (Remote On / Off)

The inhibit input allows to enable or disable the output with a control signal. In systems with several regulations, this feature can

be used to control the activation sequence of the regulators by a logic signal (TTL, C-MOS, etc.). An output voltage overshoot will

not occur, when switching on or off.

The inhibit signal is referenced to the S– (pin 18). The signal i and the switching times are specified in table 5, fig. 6 to 8.

Note: With open i input, the output is enabled.

Table 5: Inhibit characteristics

Characteristics Conditions min typ max Unit

Vinh Inhibit input

voltage

Vo = on Vi min – Vi max

TC min – TC max

- 50 +0.8

Vo = off +2.4 +50

trSwitch-on time Vi = Vi nom

RL = Vo nom / Io nom

130

tfSwitch-off time 25

Ii inh Input current when

inhibited

Vi = Vi nom 25 mA

Vi+

Gi– Go–

Vo+

inh

06009a

Fig. 6

Specification of the inhibit signal (typical)

040204– 0

–20 V

inh

[mA]

inh

Output on Output off

inh

= 0.8 V

inh

= 2.4 V

06034a

Inhibit

0.1

o nom

06001

Fig. 7

Specification of the inhibit signal (typical)

Fig. 8

Output response as a function of the inhibit signal

Sense Lines

This feature enables compensation of the voltage drop across the connector contacts and the load lines. If the sense lines are

connected at the load rather than directly at the connector, the user must ensure that Vo max (between Vo+ and Go–) is not exceeded.

Applying generously dimensioned cross-section load leads reduces the voltage drop. To minimize noise pick-up, the sense lines

should be wired in parallel or twisted.

To ensure correct operation, both sense lines must be connected to their respective power output. The voltage difference between

any sense line and its respective power output pin (as measured on the connector) should not exceed the values given in table 6.

Note: Sense lines should always be connected! It is recom mend ed to connect the sense lines directly at the female connector.

Table 6: Allowed voltage compensation using sense lines

Nominal output

voltage

Total voltage difference

between both sense lines

and their respective output

Voltage difference

between

Go– and S–

3.3 V, 5.1 V ≤ 0.5 V ≤ 0.25 V

12 – 48 V ≤ 1.0 V ≤ 0.25 V

Vi+

Gi–

Vo+

S+

S–

Go–

Load

06046a

Fig. 9

Sense lines connection

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PSK / PSS Series

Positive Switching Regulators

Current Sharing

For parallel operation of several regulators, interconnect all T-pins to ensure that the output currents are evenly distributed. This

feature improves transient load performance and increases system reliability. All paralleled regulators should be supplied by equal

input voltage (Vi). The output lines should exhibit equal length and cross section to provide equal voltage drop.

R Control (Output Voltage Adjust)

Note: With open R input, Vo ≈ Vo nom.

The output voltage Vo can either be adjusted with an external voltage source (Vext ) or with an external resistor (Rext1 or Rext2). The

adjustment range is approx. 0 – Vo max. The minimum differential voltage ΔVio min between input and output (see Electrical Input Data)

should be maintained.

a) Vo = 0 – Vo max , using Vext between R and S–:

Vo Vext

Vext ≈ 2.5 V • ––––– Vo ≈ Vo nom • –––––

Vo nom 2.5 V

Caution: To prevent damage Vext should not exceed 20 V, nor be

negative.

b) Vo = 0 to Vo nom, using Rext1 between R and S–:

4000 Ω • Vo

Vo nom • Rext1

Rext1 ≈

––––––––––– Vo ≈

–––––––––––

Vo nom – Vo R1 + 4000 Ω

c) Vo = Vo nom to Vo max, using Rext2 between R and S+:

4000 Ω • Vo • (Vo nom – 2.5 V)

Rext2 ≈ ––––––––––––––––––––––––––––––– – –

2.5 V • (Vo – Vo nom)

Vo nom • 2.5 V • Rext2

Vo ≈

––––––––––––––––––––––––––––––– ––––––– – –

2.5 V • (R2 + 4000 Ω) – Vo nom • 4000 Ω

Caution: Rext should never be less than 47 kΩ.

S+

Go–

ext

–

4 kΩ

ref

= 2.5 V

Control

logic R

ext1

ext2

JM154

Gi–

Vi+

S–

Fig. 10

Voltage adjustment via R-input

Table 7: Maximum adjustable output voltage

Vo nom Nominal Output

Voltage

Conditions 3.3 V 5.1 V 12/15 V 24 V 36 V 48 V Unit

min typ min typ min typ min typ min typ min typ

Vo max Max. adjustable output

voltage with R-input

Vi nom, Io nom 5.5 16 26 42.5 52.8 V

Test Sockets

Test sockets (pin ∅ = 2 mm) for measuring the output voltage Vo at the sense lines, are located at the front side of the regulator.

The test sockets are protected by a series resistor.

LED Output Voltage Indicator

A green LED indicator shines when the output voltage is present.

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PSK / PSS Series

Positive Switching Regulators

Electromagnetic Compatibility (EMC)

Electromagnetic Immunity

General condition: Case earthed.

Table 8: Immunity type tests

Phenomenon Standard Level Coupling mode Value

applied

Waveform Source

imped.

Test procedure In

oper.

Perf.

crit. 2

Direct transients2IEC 60571-1

2i/c, +i/– i

800 Vp100 µs

100 Ω

1 positive and

1 negative surge

per coupling

mode

yes B

1500 Vp50 µs

3000 Vp5 µs

4000 Vp1 µs

7000 Vp100 ns

Electrostatic

discharge (to case)

IEC/EN

61000-4-2 4 2contact discharge 6000 Vp1/50 ns 330 Ω 10 pos. & 10 neg.

discharges yes A

air discharge 8000 Vp

Electromagnetic

field

IEC/EN

61000-4-3

3 2

2 3antenna 10 V/m 2

3 V/m 3AM 80% / 1 kHz N/A 80 – 1000 MHz yes A

3 2antenna 10 V/m 50% duty cycle,

200 Hz rep. rate N/A 900 ± 5 MHz A

Electrical fast

transients / burst

IEC/EN

61000-4-4

3 2

2 3

i/c, +i/– i

2000 Vp

1000 Vp

bursts of 5/50 ns;

5 kHz repet. rate;

transients with 15 ms

burst duration;

300 ms period

50 Ω

60 s positive

60 s negative

transients per

coupling mode

yes

4 2

3 3

4000 Vp

2000 Vp

3B 5

Surges IEC/EN

61000-4-5

3 2

2 3i/c 2000 Vp

1000 Vp

1.2 / 50 µs

12 Ω 5 pos. & 5 neg.

surges per

coupling mode yes A

3 2

1 3+i/– i 1000 Vp

500 Vp

32 Ω

Conducted

disturbances

IEC/EN

61000-4-6

3 2

2 3i, o, signal wires 10 VAC 2

3 VAC 3AM 80% / 1 kHz 150 Ω 0.15 – 80 MHz yes A

1 i = input, o = output, c = case

2 Not applicable for -2 models

3 Valid for -2 models

4 A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs possible

5 With option C, manual reset might be necessary.

Electromagnetic Emission

Limit: 61204bqp Detector: Peak, conducted Vi+, EMC-Service Divina, 2009-12-09

PSK2412-9, Ui= 110 Vdc, Uo= 24 V, Io= 10 A

dBµV

EN 55011 Group 1 Class A qp

0.2 0.5 1 2 5 10 20 MHz

JM153

EN 55011 Group 1 Class A pk

JM152

30 50 100 200 500 1000 MHz

dBµV/m

EMC-Service Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2009-12-02

Testdistance 10 m, PSK24Z10A-7EC Ui=66 V, Uo=24 V Io= 10 A

EN 55011 A

Fig. 11

Typical conducted disturbance voltage (quasi-peak & average)

according to EN 55011 Group 1, Class A,

measured at Vi nom = 110 V and Io = 10 A (PSK2412-9).

Fig. 12

Typ. radiated disturbance voltage (quasi-peak) in 10 m

distance according to EN 55011 Group 1, Class A,

measured at Vi nom = 110 V and Io = 10 A (PSK2412-9).

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PSK / PSS Series

Positive Switching Regulators

Immunity to Environmental Conditions

Table 9: Mechanical and climatic stress

Test method Standard Test Conditions Status

Cab Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D section 507.2

Temperature: 40 ±2 °C

Regulator not

operating

Relative humidity: 93 +2/-3 %

Duration: 56 days

Db Damp heat test,

cyclic 2

EN 50155:2007, clause 12.2.5

IEC/EN 60068-2-30

Temperature: 55 °C and 25 °C

Regulator not

operating

Cycles (respiration effect): 2

Duration: 2x 24 h

Ka Salt mist test

(sodium chloride

NaCl solution)

EN 50155:2007, clause 12.2.10

IEC/EN 60068-2-11, class ST2

Temperature: 35 ±2 °C Regulator not

operating

Duration: 16 h

Ea Shock

(half-sinusoidal)

IEC/EN 60068-2-27

MIL-STD-810D section 516.3

Acceleration amplitude: 50 gn = 490 m/s2

Regulator

operating

Bump duration: 11 ms

Number of bumps: 18 (3 in each direction)

Eb Bump

(half-sinusoidal)

IEC/EN 60068-2-29

MIL-STD-810D section 516.3

Acceleration amplitude: 25 gn = 245 m/s2

Regulator

operating

Bump duration: 11 ms

Number of bumps: 6000 (1000 in each direction)

Fda Random vibration

wide band

Reproducibility high

IEC/EN 60068-2-35

DIN 40046 part 23

Acceleration spectral density: 0.05 gn

2/Hz

Regulator

operating

Frequency band: 20 to 500 Hz

Acceleration magnitude: 4.9 gn rms

Test duration: 3 h (1 h in each axis)

- Shock EN 50155:2007 clause 12.2.11

EN 61373 sect. 10, class B,

body mounted 1

Acceleration amplitude: 5.1 gn

Regulator

operating

Bump duration: 30 ms

Number of bumps: 18 (3 in each direction)

- Simulated long life

testing at increased

random vibration

levels

EN 50155:2007 clause 12.2.11

EN 61373 sect. and 9,

class B, body mounted 1

Acceleration spectral density: 0.02 gn

2/Hz

Regulator

operating

Frequency band: 5 to 150 Hz

Acceleration magnitude: 0.8 gn rms

Test duration: 15 h (5 h in each axis)

1 Body mounted = chassis of a railway coach

2 Models with version V104 or later

Temperatures

Table 10: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)

Temperature -2 -7 -9 (Option) Unit

Characteristics Conditions min typ max min typ max min typ max

TAAmbient temperature 1 Regulator operating 1 - 10 50 - 25 71 - 40 71

°C

TCCase temperature - 10 85 - 25 95 - 40 95

TSStorage temperature 1 Not operational - 25 85 - 40 85 - 55 85

1 See Thermal Considerations and Overtemperature Protection.

Reliability

Table 11: Typical MTBF and device hours

MTBF Ground benign Ground fixed Ground mobile Device hours 1

Case temperature TC = 40 °C TC = 40 °C TC = 70 °C TC = 50 °C

MTBF accord. to MIL-HDBK-217F 335 000 h 138 000 h 35 000 h 33 000 h 2 100 000 h

1 Statistical values, based on an average of 4300 working hours per year and in general field use

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PSK / PSS Series

Positive Switching Regulators

Mechanical Data

PSS Models

The regulators are designed to be inserted into a rack according to IEC 60297-3. Dimensions in mm.

European

Projection

111 ±0.5

168.5 ±0.5

3.27

7 TE 5 TE

25.9

Front plate Main face

171.0 to 171.9

11.8

Measuring point of

case temperature TC

4 x M4

09028b

103

30.3

27.38

7.8

13.3

30.5

51.5

10.34

7.04

17.8

Potentiometer

(option P)

Test sockets

LED OK green

Back plate

–

Screw holes of the

frontplate

Ø5 x 90°

Ø 2.8

0.2

152

Fig. 13

Case S01 for PSS models; weight 1.3 kg

Aluminum, fully enclosed, black finish EP power-coated, and self cooling.

Notes:

– d ≥15 mm, recommended minimum distance to next part to ensure proper air circulation at full output power.

– Free air locations: the regulator should be moun ted with its fins in vertical position to achieve a maximum air flow through heat sink.

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PSK / PSS Series

Positive Switching Regulators

PSK Models

The regulators are designed to be inserted into a DIN-rack according to IEC 60297-3. Dimensions in mm.

European

Projection

159 4.5

168.5

6.5

3.27

7 TE 9 TE

25.9

Front plate Main face Back plate

Measuring point of

case temperature T

171.0 to 171.9

11.8

09029b

30.3

111

±0.5

103

27.38

7.8

13.3

30.5

51.5

10.34

17.8

LED OK green

Potentiometer

(option P)

Test sockets

7.04

–

Screw holes of the

frontplate



5 x 90°



2.8

0.2

Fig. 14

Case K01 for PSK models, weight 1.6 kg

Aluminum, fully enclosed, black finish EP powder-coated, and self cooling.

Notes:

– d ≥15 mm, recommended minimum distance to next part to ensure proper air circulation at full output power.

– Free air locations: the regulator should be moun ted with its fins in vertical position to achieve a maximum air flow through heat sink.

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PSK / PSS Series

Positive Switching Regulators

Option B, B1

6.5

11.2

140

17.3 133.4

±0.2

168

547.2

38.5

127 6.5

11.8

11027

European

Projection

Fig. 15

Option B, large cooling plate

Weight: 1.3 kg

111

168

±0.5

101

158

M 4

171.9

547.2

38.5

11.8

11028

Fig. 16

Option B1, small cooling plate

Weight: 1.2 kg

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PSK / PSS Series

Positive Switching Regulators

Safety and Installation Instructions

Connector Pin Allocation

The connector pin allocation table defines the electrical potentials and the physical pin positions on the H15 or H15S4 connector.

Pin 24 (protective earth) is a leading pin, which provides electrical contact first. The regulators should only be wired via the female

connector H15 (according to DIN 41612) to ensure requested safety!

Table 12: H15 and H15S4 connector pin allocation

Electrical Determination Type H15 Type H15S4

no.

Ident. Pin

no.

Ident.

Output voltage (positive

Output voltage (positive)

Output voltage (negative)

Vo+

Go-

4/6

8/10

Vo+

Go-

Crowbar trigger input (option C)

Inhibit input

R-input (output voltage programming)

Sense line (negative)

Sense line (positive)

Current sharing control input

S-

S+

S-

S+

Protective ground (leading pin)

Input voltage (negative)

Input voltage (positive)

Gi-

Vi+

26/28

30/32

Gi-

Vi+

4/6

30/32

Type H15

Type H15S4

Fixtures for connector

retention clips V

(see Accessories)

Fixtures for connector

retention clips V

(see Accessories)

10010a

Fig. 17

View of H15 and H15S4 male connector

Installation Instruction

Installation of the regulators must strictly follow the national safety regulations in compliance with the enclosure, mounting,

creepage, clearance, casualty, markings, and segregation requirements of the end-use application.

The input and the output circuit are not separated. The negative path is internally interconnected.

The regulators should be connected to a secondary circuit. Make sure that a regulator failure (e.g. by an internal short-circuit)

does not result in a hazardous condition.

Do not open the regulator!

Standards and Approvals

The regulators are safety-approved to UL/CSA 60950-1 2nd Ed. and IEC/EN 60950-1 2nd Ed. They correspond to Class I equipment

(with case connected to ground).

The regulators have been evaluated for:

• Building in

• No insulation from input to output.

• The use in a pollution degree 2 environment

• Connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 V.

The switching regulators are subject to manufacturing sur veillance in accordance with the above mentioned standards and with

ISO 9001:2015.

Cleaning Liquids

In order to avoid possible damage, any penetration of cleaning fluids must be prevented, since the regulators are not hermetically sealed.

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PSK / PSS Series

Positive Switching Regulators

Protection Degree

The protection degree is IP 30. It applies only, if the regulator is plugged-in or the matching female connector is properly attached.

Isolation and Protective Earth

The resistance of the protective earth connection (max. 0.1 Ω) is tested. The electric strength between input inter con nected with

output and case is tested with 1500 VDC ≥1 s (all models with version V103 or later). Models with Vi max = 144 V and V104 or later

are tested with 2200 VDC ≥1 s.

These tests are performed in the factory as routine test in accordance with EN 50116 and IEC/EN 60950. The electric strength

test should not be repeated by the customer. BelPS Company does not honor warranty claims resulting from incorrect executed

electric strength tests.

Railway Application

The regulators have been developed observing the railway standards EN 50155 and EN 50121. All boards are coated with a

protective lacquer.

Description of Options

-7 Temperature Range

This option defines a restricted temperature range as specified in table 10 (not for new designs).

E Inrush Current Limitation

Note: This option requires an increased minimum input voltage Vi max of up to 1 V, dependent upon input range.

In regulators without option E, after application of the input supply the inrush current is limited by parasitic components of the voltage

source and the regulator input only. The regulator input exhibits a very low impedance, and when driven from a low impedance

source, for example a battery, the inrush current can peak at several orders of magnitude above the continuous input current.

Option E dramatically reduces this peak current and is recommended for any application to protect series elements such as fuses,

switches, or circuit breakers. The start-up circuit is bypassed during normal operation.

Î [A]

40 (typical)0 100 (typical) ms

Normal operation

bypassed)

Soft startInrush limit

= ––––)

11029a

Fig. 18

Option E: Inrush current versus time. Rs is the startup resistor (Rs = 1 Ω for models with Vi max ≤ 80 V, Rs = 15 Ω for models with Vi max > 80 V)

C Thyristor Crowbar

Note: The crowbar can be reset by removal of the input voltage only. The inhibit signal cannot deactivate the thyristor.

Option C protects the load against power supply malfunction. It is not designed to sink external currents.

As a central overvoltage protection device, the crowbar is usually connected to the external load via distributed inductance of the

lines. For this reason, the over voltage at the load can temporarily exceed the trigger voltage Vo c. Depending on the application,

further decentralized over voltage protection elements may have to be used additionally.

A fixed-value monitoring circuit checks the output voltage Vo, and when the trigger voltage Vo c is reached, the thyristor crowbar

triggers and disables the output.

An external connection C (crowbar trigger control) is provided. When crowbar option is used with two or more power supplies

in parallel connection, all crowbar trigger terminals (C) should be interconnected. This ensures all crowbar circuits triggering

simultaneously, in order to disable all outputs at once. The crowbar trigger voltage is maintained between Vo+ and Go–. To prevent

false triggering, the user should ensure that Vo (between Vo+ and Go–) does not exceed Vo c.

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PSK / PSS Series

Positive Switching Regulators

Table 13: Crowbar trigger levels

Characteristics Conditions PSK5A20-9ECKG PSK1212

PSK1216

PSK1220

PSS249

PSK2412

PSK2416

PSK2420

PSK3612

PSK3616

PSK3620

PSK4812 Unit

min typ max min typ max min typ max min typ max min typ max

Vo c Trigger voltage TC min – TC max

Vi min – Vi max

Io = 0 – Io nom

6.3 6.7 17.8 18.9 28.9 30.6 47 50 63 67 V

tSDelay time 1.5 1.5 1.5 1.5 1.5 µs

B, B1 Cooling Plate

Where a cooling surface is available, a cooling plate (option B or option B1) can be fitted instead of the standard heatsink. The

mounting system must ensure sufficient cooling capacity to guarantee that the maximum case temperature TC max is not exceeded.

The required cooling capacity can be calculated by the following formula:

100% – η

PLoss = _________ • (Vo • Io)

G RoHS Compliance

Models with G are RoHS-compliant for all six substances.

Accessories

A variety of electrical and mechanical accessories are available including:

• Various front panels for 19" DIN-racks with 3U height, 12 or 16 TE, Schroff or Intermas

• DIN-rail mounting assembly HZZ0615-G; see fig. 20

• Various mating connectors H15 and H15S4 including fast-on, screw, solder, or press-fit terminals, code key system and

coding wedges HZZ00202-G

• Pair of connector retention clips HZZ01209-G; see fig. 22

• Connector retention brackets HZZ01216-G; see fig. 23

• Different cable connector housings (cable hoods), includ ing a metallic version for fire protection

• Cage clamp adapter HZZ00144-G; see fig. 24

• Wall-mounting plate K02 HZZ01213, only for models with option B1

• Brackets for DIN-rail and wall mounting HZZ00610

• Battery sensors S-KSMH... for using the converter as battery charger. Different cell characteristics can be selected; see

Battery Charging/Temperature Sensor.

Fig. 19

Different front panels

Fig. 20

DIN-rail mounting assembly HZZ00615-G

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PSK / PSS Series

Positive Switching Regulators

Fig. 21

H15 female connector with code key system

Fig.22

Connector retention clips HZZ01209-G

20 to 30 Ncm

Fig. 23

Connector retention brackets HZZ01216-G

Fig. 24

Cage clamp adapter HZZ00144-G

For additional accessory product information, see the accessory data sheets listed with each product series at our web site.

NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,

equipment used in hazardous environments, or nuclear control systems.

TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the

date manufactured. Specifications are subject to change without notice.

Bel Power Solutions 的 PSK, PSS Series 规格书

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