V048F060x040 Datasheet by Vicor Corporation

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VTM®Current Multiplier
High Efficiency, Sine Amplitude Converter
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 1 of 11 06/2014 800 927.9474
V048F060T040
V 048 F 060 M 040
End of Life - Replaced by VTM48Ex060y040A00
VTM™
Module
Product Description
The V048F060T040 VI Chip®current multiplier excels at
speed, density and efficiency to meet the demands of
advanced power applications while providing isolation
from input to output. It achieves a response time of less
than 1 µs and delivers up to 40 A in a volume of less than
0.295 in3with unprecedented efficiency. It may be
paralleled to deliver higher power levels at an output
voltage settable from 3.25 to 6.87 Vdc.
The VTM V048F060T040 s nominal output voltage is
6 Vdc from a 48 Vdc input Factorized Bus, VF, and is
controllable from 3.25 to 6.87 Vdc at no load, and from
2.93 to 6.58 Vdc at full load, over a VFinput range of 26
to 55 Vdc. It can be operated either open- or closed-loop
depending on the output regulation needs of the
application. Operating open-loop, the output voltage
tracks its VFinput voltage with a transformation ratio,
K = 1/8 , for applications requiring an isolated output
voltage with high efficiency. Closing the loop back to an
input PRM®regulator or DC-DC converter enables tight
load regulation.
The 6 V VTM module achieves a power density
of 813 W /in3in a VI Chip package compatible with
standard pick-and-place and surface mount assembly
processes. The VTM modules fast dynamic response and
low noise eliminate the need for bulk capacitance at the
load, substantially increasing system density while
improving reliability and decreasing cost.
Parameter Values Unit Notes
+In to -In -1.0 to 60 Vdc
100 Vdc For 100 ms
PC to -In -0.3 to 7.0 Vdc
VC to -In -0.3 to 19.0 Vdc
+Out to -Out -0.5 to 12 Vdc
Isolation voltage 2,250 Vdc Input to output
Output current 40 A Continuous
Peak output current 60.0 A For 1 ms
Output power 263 W Continuous
Peak output power 395 W For 1 ms
Case temperature during reflow[a] 225 °C MSL 5
245 °C MSL 6, TOB = 4 hrs
Operating junction temperature[b] -40 to 125 °C T-Grade
-55 to 125 °C M-Grade
Storage temperature -40 to 125 °C T-Grade
-65 to 125 °C M-Grade
48 V to 6 V VI Chip®Converter
40 A ( 60.0 A for 1 ms)
High density 813 W /in3
Small footprint – 210 W /in2
Low weight – 0.5 oz (15 g)
Pick & Place / SMD
or Through hole
125°C operation (TJ)
1 µs transient response
3.5 million hours MTBF
Typical efficiency 95 %
No output filtering required ©
Notes:
[a] 245°C reflow capability applies to product with manufacturing date code 1001 and greater.
[b] The referenced junction is defined as the semiconductor having the highest temperature.
This temperature is monitored by a shutdown comparator.
Output Current
Designator
(=IOUT)
V 048 F 060 T 040
Input Voltage
Designator
Product Grade Temperatures (°C)
Grade Storage Operating (TJ)
T -40 to125 -40 to125
M -65 to125 -55 to125
Configuration
F = J-lead
T = Through hole
Output Voltage
Designator
(=VOUT x10)
Part Numbering
VF= 26 - 55 V
VOUT = 3.25 - 6.87 V
IOUT = 40 A
K = 1/8
ROUT = 8.1 mmax
Absolute Maximum Ratings
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 2 of 11 06/2014 800 927.9474
V048F060T040
Parameter Min Typ Max Unit Note
Input voltage range 26 48 55 Vdc Max Vin = 53 V, operating from -55°C to -40°C
Input dV/dt 1V/µs
Input overvoltage turn on 55.0 Vdc
Input overvoltage turn off 59.7 Vdc
Input current 5.5 Adc
Input reflected ripple current 275 mA p-p Using test circuit in Figure 15; See Figure 1
No load power dissipation 2.0 2.70 W
Internal input capacitance 1.9 µF
Internal input inductance 5 nH
Input Specs (Conditions are at 48 VIN, full load, and 25°C ambient unless otherwise specified)
Parameter Min Typ Max Unit Note
Output voltage 3.25 6.87 Vdc No load
2.93 6.58 Vdc Full load
Rated DC current 0 40 Adc 26 - 55 VIN
Peak repetitive current 60.0 A Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Short circuit protection set point 47.4 Adc Module will shut down
Current share accuracy 5 10 % See Parallel Operation on Page 9
Efficiency
Half load 94.0 95.6 % See Figure 3
Full load 93.5 93.9 % See Figure 3
Internal output inductance 1.1 nH
Internal output capacitance 35.6 µF Effective value
Output overvoltage set point 6.9 Vdc Module will shut down
Output ripple voltage
No external bypass 145 275 mVp-p See Figures 2 and 5
10 µF bypass capacitor 13 mVp-p See Figure 6
Effective switching frequency 2.1 2.5 3.1 MHz Fixed, 1.3 MHz per phase
Line regulation
K 0.1238 1/8 0.1263 VOUT = K•VIN at no load
Load regulation
ROUT 7.5 8.1 mΩSee Figure 16
Transient response
Voltage overshoot 180 mV 40 A load step with 100 µF CIN; See Figures 7 and 8
Response time 200 ns See Figures 7 and 8
Recovery time 1 µs See Figures 7 and 8
Output Specs (Conditions are at 48 VIN, full load, and 25°C ambient unless otherwise specified)
Specifications
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 3 of 11 06/2014 800 927.9474
V048F060T040
Figure 1 — Input reflected ripple current at full load and 48 VF.
Efficiency vs. Output Current
86
88
90
92
94
96
0481216202428323640
Output Current (A)
Efficiency (%)
Figure 3 — Efficiency vs. output current.
Power Dissipation
2
4
6
8
10
12
14
0481216202428323640
Output Current (A)
Power Dissipation (W)
Figure 4 — Power dissipation vs. output current.
Waveforms
Figure 6 — Output voltage ripple at full load and 48 VFwith 10 µF ceramic
POL bypass capacitance and 20 nH distribution inductance.
Figure 5 — Output voltage ripple at full load and 48 VF
with no POL bypass capacitance.
Ripple vs. Output Current
0
20
40
60
80
100
120
140
160
180
0481216202428323640
Output Current (A)
Output Ripple (mVpk-pk)
Figure 2 — Output voltage ripple vs. output current at 48 VF
with no POL bypass capacitance.
Specifications
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 4 of 11 06/2014 800 927.9474
V048F060T040
Parameter Min Typ Max Unit Note
Primary Control (PC)
DC voltage 4.8 5.0 5.2 Vdc
Module disable voltage 2.4 2.5 Vdc
Module enable voltage 2.5 2.6 Vdc VC voltage must be applied when module is enabled using PC
Current limit 2.4 2.5 2.9 mA Source only
Disable delay time 10 µs PC low to Vout low
VTM Control (VC)
External boost voltage 12 14 19 Vdc Required for VTM current multiplier
start up without PRM®regulator
External boost duration 10 ms Maximum duration of VC pulse = 20 ms
Auxiliary Pins (Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Figure 7 — 0- 40 A load step with 100 µF input capacitance and
no output capacitance.
Figure 8 40 -0 A load step with 100 µF input capacitance and
no output capacitance.
Parameter Min Typ Max Unit Note
MTBF
MIL-HDBK-217F 3.5 Mhrs 25°C, GB
Isolation specifications
Voltage 2,250 Vdc Input to output
Capacitance 3,000 pF Input to output
Resistance 10 MΩInput to output
Agency approvals
cTÜVus UL/CSA 60950-1, EN 60950-1
CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable
Mechanical See Mechanical Drawings, Figures 10 – 13
Weight 0.53/15 oz /g
Dimensions
Length 1.28/32,5 in /mm
Width 0.87/22 in /mm
Height 0.265/ 6,73 in /mm
Peak compressive force applied to case (Z axis) 56lbs. Supported by J-leads only
Thermal
Over temperature shutdown 125 130 135 °C Junction temperature
Thermal capacity 9.3 Ws /°C
Junction-to-case thermal impedance (RθJC) 1.1 °C /W See Thermal Considerations on Page 9
Junction-to-board thermal impedance (RθJB) 2.1 °C /W
General
Specifications
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Page 5 of 11 06/2014 800 927.9474
V048F060T040
Pin / Control Functions
+In / -In DC Voltage Ports
The VTM current multiplier input should be connected to the
PRM®regulator output terminals. Given that both the regulator and
current multiplier have high switching frequencies, it is often good
practice to use a series inductor to limit high frequency currents
between the PRM module output and VTM module input capacitors.
The input voltage should not exceed the maximum specified. If the
input voltage exceeds the overvoltage turn-off, the VTM module will
shutdown. The VTM module does not have internal input reverse
polarity protection. Adding a properly sized diode in series with the
positive input or a fused reverse-shunt diode will provide reverse polarity
protection.
TM – For Factory Use Only
VC – VTM Control
The VC port is multiplexed. It receives the initial VCC voltage from an
upstream PRM regulator, synchronizing the output rise of the VTM
module with the output rise of the regulator. Additionally, the VC port
provides feedback to the PRM to compensate for the current multiplier
output resistance. In typical applications using VTM modules powered
from PRM regulators, the regulators VC port should be connected to
the VTM module VC port.
The VC port is not intended to be used to supply VCC voltage to the
VTM module for extended periods of time. If VC is being supplied from
a source other than the PRM regulators, the voltage should be removed
after 20 ms.
PC – Primary Control
The Primary Control (PC) port is a multifunction port for controlling the
current multiplier as follows:
Disable – If PC is left floating, the VTM module output is enabled.
To disable the output, the PC port must be pulled lower than 2.4 V,
referenced to -In. Optocouplers, open collector transistors or relays
can be used to control the PC port. Once disabled, 14 V must be
re-applied to the VC port to restart the VTM module.
Primary Auxiliary Supply – The PC port can source up to 2.4 mA
at 5 Vdc.
+Out / -Out DC Voltage Output Ports
The output and output return are through two sets of contact
locations. The respective +Out and –Out groups must be connected in
parallel with as low an interconnect resistance as possible. Within the
specified input voltage range, the Level 1 DC behavioral model shown
in Figure 16 defines the output voltage of the VTM module. The
current source capability of the VTM module is shown in the
specification table.
To take full advantage of the VTM current multiplier, the user should
note the low output impedance of the device. The low output
impedance provides fast transient response without the need for bulk
POL capacitance. Limited-life electrolytic capacitors required with
conventional converters can be reduced or even eliminated, saving cost
and valuable board real estate.
-In
PC
VC
TM
+In
-Out
+Out
-Out
+Out
Bottom View
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
4 3 2 1
A
B
C
D
E
H
J
K
L
M
N
P
R
T
Figure 9 — VTM current multiplier pin configuration
Signal Name Pin Designation
+In A1-E1, A2-E2
–In L1-T1, L2-T2
TM H1, H2
VC J1, J2
PC K1, K2
+Out A3-D3, A4-D4,
J3-M3, J4-M4
–Out E3-H3, E4-H4,
N3-T3, N4-T4
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 6 of 11 06/2014 800 927.9474
V048F060T040
TOP VIEW ( COMPONENT SIDE)
BOTTOM VIEW inch
mm
NOTES:
1. DIMENSIONS ARE .
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]
3. PRODUCT MARKING ON TOP SURFACE
DXF and PDF files are available on vicorpower.com
End of Life - Replaced by VTM48Ex060y040A00
Mechanical Drawings
Figure 10 VT M module J-Lead mechanical outline; Onboard mounting
RECOMMENDED LAND PATTERN
( COMPONENT SIDE SHOWN )
inch
mm
NOTES:
1. DIMENSIONS ARE .
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]
3. PRODUCT MARKING ON TOP SURFACE
DXF and PDF files are available on vicorpower.com
Figure 11 — VTM module J-Lead PCB land layout information; Onboard mounting
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Page 7 of 11 06/2014 800 927.9474
V048F060T040
End of Life - Replaced by VTM48Ex060y040A00
Mechanical Drawings (continued)
TOP VIEW ( COMPONENT SIDE )
BOTTOM VIEW
NOTES:
1. DIMENSIONS ARE
2. UNLESS OTHERWISE SPECIFIED TOLERANCES ARE:
X.X [X.XX] = ±0.25 [0.01]; X.XX [X.XXX] = ±0.13 [0.005]
3. RoHS COMPLIANT PER CST-0001 LATEST REVISION
DXF and PDF files are available on vicorpower.com
inch
(mm).
Figure 12 VT M through-hole module mechanical outline
NOTES:
1. DIMENSIONS ARE
2. UNLESS OTHERWISE SPECIFIED TOLERANCES ARE:
X.X [X.XX] = ±0.25 [0.01]; X.XX [X.XXX] = ±0.13 [0.005]
3. RoHS COMPLIANT PER CST-0001 LATEST REVISION
DXF and PDF files are available on vicorpower.com
inch
(mm).
RECOMMENDED HOLE PATTERN
( COMPONENT SIDE SHOWN )
Figure 13 — VTM through-hole module PCB layout information
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VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 8 of 11 06/2014 800 927.9474
V048F060T040
Figure 14 — Hole location for push pin heat sink relative to VI Chip®module
Mechanical Drawings (continued)
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Page 9 of 11 06/2014 800 927.9474
V048F060T040
Figure 15 — VTM module test circuit
Parallel Operation
In applications requiring higher current or redundancy, VTM current
multipliers can be operated in parallel without adding control circuitry
or signal lines. To maximize current sharing accuracy, it is imperative
that the source and load impedance on each VTM module in a parallel
array be equal. If the modules are being fed by an upstream PRM®
regulator, the VC nodes of all VTM modules must be connected to the
PRM module VC.
To achieve matched impedances, dedicated power planes within the PC
board should be used for the output and output return paths to the
array of paralleled VTMs. This technique is preferable to using traces of
varying size and length.
The VTM module power train and control architecture allow
bi-directional power transfer when the module is operating within its
specified ranges. Bi-directional power processing improves transient
response in the event of an output load dump. The module may
operate in reverse, returning output power back to the input source. It
does so efficiently.
Thermal Considerations
VI Chip®products are multi-chip modules whose temperature
distribution varies greatly for each part number as well as with the
input/output conditions, thermal management and environmental
conditions. Maintaining the top of the V048F060T040 case to less than
100°C will keep all junctions within the VI Chip module below
125°C for most applications. The percent of total heat dissipated
through the top surface versus through the J-lead is entirely dependent
on the particular mechanical and thermal environment. The heat
dissipated through the top surface is typically 60%. The heat dissipated
through the J-lead onto the PCB board surface is typically 40%. Use
100% top surface dissipation when designing for a conservative
cooling solution.
It is not recommended to use a VI Chip module for an extended period
of time at full load without proper heat sinking.
Input Impedance Recommendations
To take full advantage of the current multiplier’s capabilities, the
impedance of the source (input source plus the PC board impedance)
must be low over a range from DC to 5 MHz. Input bypass capacitance
may be added to improve transient performance or compensate for
high source impedance. The VTM module has extremely wide
bandwidth so the source response to transients is usually the limiting
factor in overall output response of the module.
Anomalies in the response of the source will appear at the output of
the VTM module, multiplied by its K factor of 1/8 . The DC resistance
of the source should be kept as low as possible to minimize voltage
deviations on the input to the module. If the module is going to be
operating close to the high limit of its input range, make sure input
voltage deviations will not trigger the input overvoltage turn-off
threshold.
Input Fuse Recommendations
VI Chip products are not internally fused in order to provide flexibility in
configuring power systems. However, input line fusing of VI Chip
modules must always be incorporated within the power system. A fast
acting fuse is required to meet safety agency Conditions of
Acceptability. The input line fuse should be placed in series with
the +In port.
Application Note
F1
Load
+
Input reflected ripple
measurement point
C2
0.47 µF
ceramic +
14 V
-In
PC
VC
TM
+In
-Out
+Out
VTM ®
+Out
-Out
K
Ro
Notes:
C3 should be placed close
to the load
R3 may be ESR of C3 or a
separate damping resistor.
C3
10 µF
R3
10 mΩ
C1
47 µF
Al electrolytic
7 A
Fuse
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End of Life - Replaced by VTM48Ex060y040A00
VTM®Current Multiplier Rev 3.5 vicorpower.com
Page 10 of 11 06/2014 800 927.9474
V048F060T040
Figure 18 — The PRM regulator controls the factorized bus voltage, VF, in proportion to output current to compensate for the output resistance, Ro, of the
VTM current multipler. The VTM module output voltage is typically within 1% of the desired load voltage (VL) over all line and load conditions.
+Out
–Out
+In
–In
VC
PC
TM
IL
VH
PR
NC
SG
SC
OS
NC
CD
L
O
A
D
VIN
In
PC
VC
TM
+In
Out
+Out
Out
+Out
K
Ro
0.01 µF
0.4 µH
10 Ω
10 kΩ
PRM® -A L
Module VTM®
Module
Factorized
Bus (VF
)
ROS
RCD
FPA™ Adaptive Loop
In figures below;
K = VTM current multiplier transformation ratio VF= PRM®output (Factorized Bus Voltage)
RO= VTM output resistance VO= VTM output
VL= Desired load voltage
Application Note (continued)
+
+
VOUT
COUT
VIN
V•I
K
+
+
CIN
IOUT
RCOUT
IQ
ROUT
RCIN
42 mA
VI Chip®VTM Current Multiplier Level 2 Transient Behavioral Model for 48 V to 6 V, 40 A
Figure 17 — This model characterizes the AC operation of the VI Chip VTM including response to output load or input voltage transients or steady state
modulations. The model enables estimates or simulations of input and output voltages under transient conditions, including response to a stepped load
with or without external filtering elements.
©
1/8 • IOUT 1/8 • VIN
7.5 mΩ
RCIN
1.3 mΩ
3.2 nH
10 mΩRCOUT
1 mΩ
35.6 µF
LOUT = 1.1 nH
1.9 µF
+
+
VOUT
VIN
VI
K
+
+
IOUT ROUT
IQ
VTM Current Multiplier Level 1 DC Behavioral Model for 48 V to 6 V, 40 A
Figure 16 — This model characterizes the DC operation of the VI Chip®VTM, including the converter transfer function and its losses. The model enables
estimates or simulations of output voltage as a function of input voltage and output load, as well as total converter power dissipation or heat generation.
©
7.5 mΩ
1/8 • VIN
1/8 • IOUT
42 mA
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V048F060T040
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
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Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no
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changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and
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when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the
user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products
and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages.
Intellectual Property Notice
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is
granted by this document. Interested parties should contact Vicor's Intellectual Property Department.
The products described on this data sheet are protected by the following U.S. Patents Numbers:
5,945,130; 6,403,009; 6,710,257; 6,911,848; 6,930,893; 6,934,166; 6,940,013; 6,969,909; 7,038,917; 7,145,186; 7,166,898; 7,187,263;
7,202,646; 7,361,844; D496,906; D505,114; D506,438; D509,472; and for use under 6,975,098 and 6,984,965.
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
email
Customer Service: custserv@vicorpower.com
Technical Support: apps@vicorpower.com

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