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EFFICIENT POWER CONVERSION l

Demonstration System

EPC9114

Quick Start Guide

EPC2107 and EPC2036

6.78 MHz, ZVS Class-D Wireless Power System

QUICK START GUIDE Demonstration System EPC9114

DESCRIPTION

The EPC9114 wireless power demonstration system is a high efficiency,

A4WP compatible, Zero Voltage Switching (ZVS), Voltage Mode class-D

wireless power transfer demonstration kit capable of delivering up to

10 W into a DC load while operating at 6.78 MHz (Lowest ISM band).

The purpose of this demonstration system is to simplify the evaluation

process of wireless power technology using eGaN® FETs.

The EPC9114 wireless power system comprises the three boards

(shown in Figure 1) namely:

1) A Source Board (Transmitter or Power Amplifier) EPC9510

2) A Class 2 A4WP compliant Source Coil (Transmit Coil)

3) A Category 3 A4WP compliant Device Coil with rectifier and DC

smoothing capacitor.

The amplifier board features the enhancement-mode half-bridge

field effect transistor (FET), the 100 V rated EPC2107 eGaN FET with

integrated synchronous bootstrap FET. The amplifier is configured for

single ended operation and includes the gate driver/s, oscillator, and

feedback controller for the pre-regulator that ensures operation for

wireless power control based on the A4WP standard. This allows for

testing compliant to the A4WP class 2 standard over the entire load

range of ±35j Ω. The pre-regulator features the 100 V rated 65 mΩ

EPC2036 as the main switching device for a SEPIC converter.

The amplifier is equipped with a pre-regulator controller that adjusts

the voltage supplied to the ZVS class D amplifier based on the limits

of 3 parameters; coil current, DC power delivered and maximum

voltage. The coil current has the lowest priority followed by the power

delivered with the amplifier supply voltage having the highest priority.

Changes in the device load power demand, physical placement of the

device on the source coil and other factors such as metal objects in

proximity to the source coil all contribute to variations in coil current,

DC power and amplifier voltage requirements. Under any conditions,

the controller will ensure the correct operating conditions for the ZVS

class D amplifier based on the A4WP standard.

The pre-regulator can be bypassed to allow testing with custom control

hardware. The board further allows easy access to critical measurement

nodes that allow accurate power measurement instrumentation

hookup. A simplified diagram of the amplifier board is given in Figure 2.

The Source and Device Coils are Alliance for Wireless Power (A4WP)

compliant and have been pre-tuned to operate at 6.78 MHz with the

EPC9510 amplifier. The source coil is Class 2 and the device coil is

Category 3 compliant.

The device board includes a high frequency schottky diode based full

bridge rectifier and output filter to deliver a filtered unregulated DC

voltage. The device board comes equipped with two LED’s, one green

to indicate the power is being received with an output voltage equal

or greater than 4 V and a second red LED that indicates that the output

voltage has reached the maximum and is above 37 V.

For more information on the EPC2107 and EPC2036 eGaN FETs please

refer to the datasheet available from EPC at www.epc-co.com. The

datasheet should be read in conjunction with this quick start guide.

The Source coil used in this wireless power transfer demo system is

provided by NuCurrent (nucurrent.com). Reverse Engineering of the

Source coil is prohibited and protected by multiple US and international

patents. For additional information on the source coil, please contact

NuCurrent direct or EPC for contact information.

MECHANICAL ASSEMBLY

The assembly of the EPC9114 Wireless Demonstration kit is simple and

shown in Figure 1. The source coil and amplifier have been equipped

with SMA connectors. The source coil is simply connected to the amplifier.

The device board does not need to be mechanically attached to the

source coil.

DETAILED DESCRIPTION

The Amplifier Board (EPC9510)

Figure 2 shows the system block diagram of the EPC9510 ZVS class-D

amplifier with pre-regulator and Figure 3 shows the details of the ZVS

class-D amplifier section. The pre-regulator is used to control the ZVS

class-D wireless power amplifier based on three feedback parameters

1) the magnitude of the coil current indicated by the green LED, 2) the

DC power drawn by the amplifier indicated by the yellow LED and 3)

a maximum supply voltage to the amplifier indicated by the red LED.

Only one parameter at any time is used to control the pre-regulator

with the highest priority being the maximum voltage supplied to the

amplifier followed by the power delivered to the amplifier and lastly the

magnitude of the coil current. The maximum amplifier supply voltage

is pre-set to 66 V and the maximum power drawn by the amplifier is

pre-set to 10 W. The coil current magnitude is pre-set to 580 mARMS,

but can be made adjustable using P25. The pre-regulator comprises a

SEPIC converter that can operate at full power from 17 V through 24 V.

50 mm

80 mm

Amplifier Board

Source Coil

Device Board

150 mm

103 mm

57 mm

47 mm

Figure 1: EPC9114

Demonstration System

h—n-i The prerregulamr can be bypassed by connecting khe posikive aving sikive aced by nce er. d

QUICK START GUIDE Demonstration System EPC9114

The pre-regulator can be bypassed by connecting the positive

supply directly to the ZVS class-D amplifier supply after removing

the jumper at location JP1 and connecting the main positive

supply to the bottom pin. JP1 can also be removed and replaced

with a DC ammeter to directly measure the current drawn by

the amplifier. When doing this observe a low impedance

connection to ensure continued stable operation of the controller.

Together with the Kelvin voltage probes (TP1 and TP2) connected

to the amplifier supply, an accurate measurement of the power

drawn by the amplifier can be made.

The EPC9510 is also provided with a miniature high efficiency

switch-mode 5 V supply to power the logic circuits on board such as

the gate drivers and oscillator.

The amplifier comes with its own low supply current oscillator that is

pre-programmed to 6.78 MHz ± 678 Hz. It can be disabled by placing

a jumper into JP70 or can be externally shutdown using an externally

controlled open collector / drain transistor on the terminals of JP70

(note which is the ground connection). The switch needs to be capable

of sinking at least 25 mA. An external oscillator can be used instead

of the internal oscillator when connected to J70 (note which is the

ground connection) and the jumper (JP71) is removed.

The pre-regulator can also be disabled in a similar manner as the oscillator

using JP50. However, note that this connection is floating with respect to

the ground so removing the jumper for external connection requires a

floating switch to correctly control this function. Refer to the datasheet of

the controller IC and the schematic in this QSG for specific details.

The EPC9510 is provided with 3 LED’s that indicate the mode of

operation of the system. If the system is operating in coil current limit

mode, then the green LED will illuminate. For power limit mode, the

yellow LED will illuminate. Finally, when the pre-regulator reaches

maximum output voltage the red LED will illuminate indicating that

the system is no longer A4WP compliant as the load impedance

is too high for the amplifier to drive. When the load impedance

is too high to reach power limit or voltage limit mode, then the current

limit LED will illuminate incorrectly indicating current limit mode. This

mode also falls outside the A4WP standard and by measuring the

amplifier supply voltage across TP1 and TP2 will show that it has nearly

reach the maximum value limit.

ZVS Timing Adjustment

Setting the correct time to establish ZVS transitions is critical

to achieving high efficiency with the EPC9510 amplifier. This

can be done by selecting the values for R71 and R72 or P71

and P72 respectively. This procedure is best performed using a

potentiometer installed at the appropriate locations that is used to

determine the fixed resistor values. The timing MUST initially be set

WITHOUT the source coil connected to the amplifier. The timing

diagrams are given in Figure 10 and should be referenced when

following this procedure. Only perform these steps if changes have

been made to the board as it is shipped preset. The steps are:

1. With power off, remove the jumper in JP1 and install it into JP50 to

place the EPC9510 amplifier into Bypass mode. Connect the main input

power supply (+) to JP1 (bottom pin – for bypass mode) with ground

connected to J1 ground (-) connection.

2. With power off, connect the control input power supply bus (19 V) to

(+) connector J1. Note the polarity of the supply connector.

3. Connect a LOW capacitance oscilloscope probe to the probe-hole of

the half-bridge to be set and lean against the ground post as shown in

Figure 9.

4. Turn on the control supply – make sure the supply is approximately 19 V.

5. Turn on the main supply voltage starting at 0 V and increasing to the

required predominant operating value (such as 24 V but NEVER exceed

the absolute maximum voltage of 66 V).

6. While observing the oscilloscope adjust the applicable

potentiometers to so achieve the green waveform of Figure 10.

7. Replace the potentiometers with fixed value resistors if required.

Remove the jumper from JP50 and install it back into JP1 to revert the

EPC9510 back to pre-regulator mode.

Table 2: Performance Summary (TA = 25 °C) Category 3 Device Board

Symbol Parameter Conditions Min Max Units

VOUT Output Voltage Range 0 38 V

IOUT Output Current Range 0 1.5# A

# Actual maximum current subject to operating temperature limits

* Maximum current depends on die temperature – actual maximum current will be subject to switching

frequency, bus voltage and thermals.

Table 1: Performance Summary (TA = 25°C) EPC9510

Symbol Parameter Conditions Min Max Units

VIN

Bus Input Voltage Range – Pre-

Regulator Mode

Also used in

bypass mode

for logic supply

17 24 V

VIN

Amp Input Voltage Range – Bypass

Mode 0 80 V

VOUT Switch Node Output Voltage 66 V

IOUT Switch Node Output Current (each) 0.8* A

Vextosc External Oscillator Input Threshold Input ‘Low’ -0.3 0.8 V

Input ‘High’ 2.4 5 V

VPre_Disable

Pre-regulator Disable

Voltage Range Floating -0.3 5.5 V

IPre_Disable

Pre-regulator Disable

Current Floating -10 10 mA

VOsc_Disable

Oscillator Disable

Voltage Range

Open Drain/

Collector -0.3 5 V

IOsc_Disable

Oscillator Disable

Current

Open Drain/

Collector -25 25 mA

VSgnDiff Differential or Single Select Voltage Open Drain/

Collector -0.3 5.5 V

ISgnDiff Differential or Single Select Current Open Drain/

Collector -1 1 mA

QUICK START GUIDE Demonstration System EPC9114

LZVS = ∆tvt

8 ∙ fsw∙ COSSQ + Cwell

COSSQ =

VAMP

∙

∫

VAMP

COSS (v) ∙ dv

Determining component values for LZVS

The ZVS tank circuit is not operated at resonance, and only provides the

necessary negative device current for self-commutation of the output

voltage at turn off. The capacitor CZVS1 is chosen to have a very small

ripple voltage component and is typically around 1 µF. The amplifier

supply voltage, switch-node transition time will determine the value of

inductances for LZVS1 and LZVS2 which needs to be sufficient to maintain

ZVS operation over the DC device load resistance range and coupling

between the device and source coil range and can be calculated using

the following equation:

(1)

Where:

Δtvt = Voltage transition time [s]

ƒSW = Operating frequency [Hz]

COSSQ = Charge equivalent device output capacitance [F].

Cwell = Gate driver well capacitance [F]. Use 20 pF for the LM5113

NOTE. the amplifier supply voltage VAMP is absent from the equation as it

is accounted for by the voltage transition time. The COSS of the EPC2107

eGaN FETs is very low and lower than the gate driver well capacitance

Cwell which as a result must be now be included in the ZVS timing

calculation. The charge equivalent capacitance can be determined using

the following equation:

(2)

To add additional immunity margin for shifts in coil impedance, the value

of LZVS can be decreased to increase the current at turn off of the devices

(which will increase device losses). Typical voltage transition times range

from 2 ns through 12 ns.

The Source Coil

Figure 4 shows the schematic for the source coil which is Class 2 A4WP

compliant. The matching network includes both series and shunt tuning.

The matching network series tuning is differential to allow balanced

connection and voltage reduction for the capacitors.

The Device Board

Figure 5 shows the basic schematic for the device coil which is Category

3A4WP compliant. The matching network includes both series and

shunttuning. The matching network series tuning is differential to

allow balanced connection and voltage reduction for the capacitors.

The device board comes equipped with a kelvin connected output

DC voltage measurement terminal and a built in shunt to measure the

output DC current. Two LEDs have been provided to indicate that the

board is receiving power with an output voltage greater than 4 V (green

LED) and that the board output voltage limit has been reached (greater

than 36 V using the red LED).

QUICK START PROCEDURE

The EPC9114 demonstration system is easy to set up and evaluate the

performance of the eGaN FET in a wireless power transfer application.

Refer to Figure 1 to assemble the system and Figures 6 through 8 for

proper connection and measurement setup before following the

testing procedures.

The EPC9510 can be operated using any one of two alternative

methods:

a. Using the pre-regulator.

b. By-passing the pre-regulator.

a. Operation using the pre-regulator

The pre-regulator is used to supply power to the amplifier in this mode

and will limit the coil current, power delivered or maximum supply

voltage to the amplifier based on the pre-determined settings.

The main 19 V supply must be capable of delivering 2 ADC. DO NOT

turn up the voltage of this supply when instructed to power up

the board, instead simply turn on the supply. The EPC9510 board

includes a pre-regulator to ensure proper operation of the board

including start up.

1. Make sure the entire system is fully assembled prior to making

electrical connections and make sure jumper JP1 is installed. Also

make sure the source coil and device coil with load are connected.

2. With power off, connect the main input power supply bus to J1 as

shown in Figure 7. Note the polarity of the supply connector.

3. Make sure all instrumentation is connected to the system.

4. Turn on the main supply voltage to the required value (19 V).

5. Once operation has been confirmed, observe the output voltage,

efficiency and other parameters on both the amplifier and

device boards.

6. For shutdown, please follow steps in the reverse order.

b. Operation bypassing the pre-regulator

In this mode, the pre-regulator is bypassed and the main power is

connected directly to the amplifier. This allows the amplifier to be

operated using an external regulator. In this mode there is no protection

for ensuring the correct operating conditions for the eGaN FETs.

1. Make sure the entire system is fully assembled prior to making

electrical connections and make sure jumper JP1 has been removed

and installed in JP50 to disable the pre-regulator and place the

EPC9510 in bypass mode. Also make sure the source coil and device

coil with load are connected.

2. With power off, connect the main input power supply bus to the

bottom pin of JP1 and the ground to the ground connection of J1 as

shown in Figure 7.

3. With power off, connect the control input power supply bus to J1.

Note the polarity of the supply connector. This is used to power the

gate drivers and logic circuits.

4. Make sure all instrumentation is connected to the system.

5. Turn on the control supply – make sure the supply is 19 V range.

QUICK START GUIDE Demonstration System EPC9114

6. Turn on the main supply voltage to the required value (it is

recommended to start at 0 V and do not exceed the absolute

maximum voltage of 80 V).

7. Once operation has been confirmed, adjust the main supply voltage

within the operating range and observe the output voltage, efficiency

and other parameters on both the amplifier and device boards.

8. For shutdown, please follow steps in the reverse order. Start by

reducing the main supply voltage to 0 V followed by steps 6 through 2.

NOTE.

1. When measuring the high frequency content switch-node (Source Coil Voltage), care

must be taken to avoid long ground leads. An oscilloscope probe connection (preferred

method) has been built into the board to simplify the measurement of the Source Coil

voltage (shown in Figure 9).

2. You may experience audible noise emanating from the inductor of the SEPIC converter.

This is due to a minor instability. This minor instability does not impact the performance

of the power amplifier or the protection circuitry of the system.

3. AVOID using a Lab Benchtop programmable DC as the load for the category 3 device

board. These loads have low control bandwidth and will cause the EPC9114 system to

oscillate at a low frequency and may lead to failure. It is recommended to use a fixed low

inductance resistor as an initial load. Once a design matures, a post regulator, such as a

Buck converter, can be used.

THERMAL CONSIDERATIONS

The EPC9114 demonstration system showcases the EPC2107 and

EPC2036 eGaN FETs in a wireless energy transfer application. Although

the electrical performance surpasses that of traditional silicon devices,

their relatively smaller size does magnify the thermal management

requirements. The operator must observe the temperature of the gate

driver and eGaN FETs to ensure that both are operating within the

thermal limits as per the datasheets.

NOTE. The EPC9114 demonstration system has limited current protection only when

operating off the Pre-Regulator. When bypassing the pre-regulator there is no current

protection on board and care must be exercised not to over-current or over-temperature

the devices. Excessively wide coil coupling and load range variations can lead to increased

losses in the devices.

Pre-Cautions

The EPC9114 demonstration system has no enhanced protection

systems and therefore should be operated with caution. Some specific

precautions are:

1. Never operate the EPC9114 system with a device board that is A4WP

compliant as this system does not communicate with the device to

correctly setup the required operating conditions and doing so can

lead to failure of the device board. Contact EPC should operating

the system with an A4WP compliant device is required to obtain

instructions on how to do this. Please contact EPC at info@epc-co.com

should the tuning of the coil be required to change to suit specific

conditions so that it can be correctly adjusted for use with the ZVS

class-D amplifier.

2. There is no heat-sink on the devices and during experimental

evaluation it is possible present conditions to the amplifier that may

cause the devices to overheat. Always check operating conditions and

monitor the temperature of the EPC devices using an IR camera.

3. Never connect the EPC9510 amplifer board into your VNA in an

attempt to measure the output impedance of the amplifier. Doing so

will severely damage the VNA.

Figure 3: Diagram of EPC9510 amplifier circuit

AMP

CZVS

LZVS

Coil

Connection

Pre-

Regulator

Pre-Regulator

Jumper

JP1

VIN

Bypass Mode

Connection

Figure 2: Block diagram of the EPC9510 wireless power amplifier

IAMP P

AMP

VAMP

Icoil

|Icoil |

19 V

SEPIC

Pre-Regulator

ZVS Class-D

Amplifier

Control Reference Signal

Combiner

Coil

1 V –

66 VDC

Ampliﬁer women, image; 5 sores‘o

QUICK START GUIDE Demonstration System EPC9114

Source Coil

Coil

Connection

Matching

Impedance

Network

Class 2

Coil

Figure 4: Basic schematic of the A4WP Class 2 Source Coil

Un-Regulated

DC output

Matching

Impedance

Network

Cat. 3

Coil

Device Board

Figure 5: Basic Schematic of the A4WP Category 3 Device Board

Figure 6: Proper Connection and Measurement Setup for the Amplifier Board

17-24 VDC

VIN Supply

(Note Polarity)

Source Coil

Connection

External

Oscillator

Switch-node Main

Oscilloscope Probe

Ground Post

Voltage

Source Jumper

Disable

Oscillator

Jumper

Disable Pre-Regulator

Jumper

Coil Current Setting

Amplifier

Timing Setting

(Not Installed)

Pre-Regulator Jumper

Bypass Connection

Operating Mode LED

Indicators

Ground Post

Amplifier

Supply Voltage

(0 V – 80 Vmax.)

Switch-node

Pre-Regulator

Oscilloscope probe

Internal Oscillator

Selection Jumper

Makdlin ; W m Erna Nu uc mm mm >5VLED

QUICK START GUIDE Demonstration System EPC9114

Figure 8: Proper connection and measurement setup for the device board

Standoffs for Mechanical

attachment to Source Coil

to these locations (x5)

Device Output

Voltage

(0 V – 38 V

max

)

External Load

Connection

Matching

Device Output

Current

(300 m Shunt)

Output Voltage

> 5 V LED

Output Voltage

> 37 V LED

Load Current

(See Notes for details)

* ONLY to be used with

Shunt removed

Source Board

Connection

Matching with

trombone tuning

Figure 7: Proper connection for the source coil

Do not use probe ground lead A: " , - ‘ I— Illtpc‘ﬁ‘kofémfi?:53thU

QUICK START GUIDE Demonstration System EPC9114

Figure 9: Proper Measurement of the Switch Nodes using the hole and ground post

Do not use

probe ground lead

Ground

probe

against

post

Place probe tip

in large via Minimize

loop

Figure 10: ZVS Timing Diagrams

Shoot-

through

Q2 turn-on

Q1 turn-off

VAMP

time

ZVS

Partial

ZVS

ZVS + Diode

Conduction

Shoot-

through

Q1 turn-on

Q2 turn-off

VAMP

time

ZVS

Partial

ZVS

ZVS + Diode

Conduction

QUICK START GUIDE Demonstration System EPC9114

Table 3: Bill of Materials - Amplifier Board

Item Qty Reference Part Description Manufacturer Part #

1 2 C1, C80 1 µF, 10 V TDK C1005X7S1A105M050BC

2 8 C2, C4, C51, C70, C71, C72, C81, C130 100 nF, 16 V Würth 885012205037

3 2 C3, C95 22 nF, 25 V Würth 885012205052

4 1 C5 DNP (100 nF, 16 V) Würth 885012205037

5 1 C20 DNP (10 nF, 50 V) Murata GRM155R71H103KA88D

6 1 C45 DNP (10 nF, 100 V) Murata C1005X7S2A103K050BB

7 1 C73 DNP (22 pF, 50 V) Würth

8 1 C133 DNP (1 nF, 50 V) Murata

9 1 R20 DNP (10k) Panasonic ERJ-2GEJ103X

10 1 R45 DNP (1.5k) Panasonic ERJ-2RKF1501X

11 5 C6, C7, C31, C44, C82 22 pF, 50 V Würth 885012005057

12 2 C11, C12 10 nF, 100 V TDK C1005X7S2A103K050BB

13 3 C15, C64, C65 2.2 µF, 100 V Taiyo Yuden HMK325B7225KN-T

14 1 C21 680 pF, 50 V Murata GRM155R71H681KA01D

15 1 C22 1 nF, 50 V Murata GRM155R71H102KA01D

16 2 C30, C50 100 nF, 100 V Murata GRM188R72A104KA35D

17 1 C32 47 nF, 25 V Murata GRM155R71E473KA88D

18 2 C43, C53 10 nF, 50 V Murata GRM155R71H103KA88D

19 1 C52 100 pF Murata GRM1555C1H101JA01D

20 2 C61, C62 4.7 µF, 50 V

Taiyo Yuden UMK325BJ475MM-T

21 1 C63 10 µF, 35 V

Taiyo Yuden GMK325BJ106KN-T

22 3 C90, C91, C92 1 µF, 25 V Würth

885012206076

23 1 C131 1 nF, 50 V

Murata GRM1555C1H102JA01D

24 1 Czvs1 1 µF, 50 V

Würth 885012207103

25 2 D1, D95 40 V, 300 mA

ST BAT54KFILM

26 7 D2, D21, D40, D41, D42, D71, D72 40 V, 30 mA

Diodes Inc. SDM03U40

27 2 D3, D20 DNP (40 V, 30 mA)

Diodes Inc. SDM03U40

28 1 D4 5 V1, 150 mW

Bournes CD0603-Z5V1

29 1 D35 LED 0603 Yellow

Lite-On LTST-C193KSKT-5A

30 1 D36 LED 0603 Green

Lite-On LTST-C193KGKT-5A

31 1 D37 LED 0603 Red

Lite-On LTST-C193KRKT-5A

32 1 D60 100 V, 1A

On-Semi MBRS1100T3G

33 1 D90 40 V, 1A Diodes Inc. PD3S140-7

34 2 GP1, GP60 .1" mAle Vert. Würth 61300111121

35 1 J1 .156" mAle Vert. Würth 645002114822

36 1 J2 S mA Board Edge Linx CONSAM003.062

37 5 J70, JP1, JP50, JP70, JP71 .1" mAle Vert. Würth 61300211121

38 1 L60 100 µH, 2.2A CoilCraft MSD1260-104ML

39 1 L80 10 µH, 150 mA Taiyo Yuden LBR2012T100K

40 1 L90 47 µH, 250 mA Würth 7440329470

41 1 Lsns 110 nH CoilCraft 2222SQ-111JE

42 2 Lzvs1, Lzvs2 390 nH CoilCraft 2929SQ-391JE

43 1 P25 DNP (10k) Murata PV37Y103C01B00

44 2 P71, P72 DNP (1k) Murata PV37Y102C01B00

45 1 Q1 100 V, 220 mΩ with SB EPC EPC2107

46 1 Q60 100 V, 65 mΩ EPC EPC2036

47 1 Q61 DNP (100 V, 6A, 30mΩ) EPC EPC2007C

48 2 R2, R82 20 Ω Stackpole RMCF0402JT20R0

49 1 R3 27 k Panasonic ERJ-2GEJ273X

50 1 R4 4.7 Ω Panasonic ERJ-2GEJ4R7X

51 1 R21 100k Panasonic ERJ-2GEJ104X

52 2 R25, R133 6.8k, 1% Panasonic ERJ-2RKF6801X

53 1 R26 2.8k, 1% Panasonic ERJ-2RKF2801X

54 1 R30 100 Ω Panasonic ERJ-3EKF1000V

55 1 R31 71k5, 1% Panasonic ERJ-6ENF7152V

(continued on next page)

QUICK START GUIDE Demonstration System EPC9114

Table 3: Bill of Materials - Amplifier Board (continued)

Item Qty Reference Part Description Manufacturer Part #

56 1 R32 8.2k, 1% Panasonic ERJ-2RKF8201X

57 1 R33 75k Panasonic ERJ-2GEJ753X

58 2 R35, R36 634 Ω Panasonic ERJ-2RKF6340X

59 1 R37 150k, 1% Panasonic ERJ-2RKF1503X

60 2 R38, R91 49.9k, 1% Panasonic ERJ-2RKF4992X

61 2 R40, R130 261k Panasonic ERJ-3EKF2613V

62 2 R41, R131 6.04k Panasonic ERJ-2RKF6041X

63 1 R42 24.9k Panasonic ERJ-2RKF2492X

64 1 R43 10.5k Panasonic ERJ-2RKF1052X

65 2 R44, R90 100k, 1% Panasonic ERJ-2RKF1003X

66 1 R50 10 Ω Panasonic ERJ-3EKF10R0V

67 1 R51 124k, 1% Panasonic ERJ-2RKF1243X

68 1 R52 71.5k, 1%

Panasonic ERJ-2RKF7152X

69 1 R53 1.00k Panasonic

ERJ-2RKF1001X

70 1 R54 0 Ω

Yageo RC0402JR-070RL

71 1 R60 80 mΩ, 0.4 W Vishay Dale

WSLP0603R0800FEB

72 1 R61 300 mΩ, 0.125 W

Vishay Dale RL0805FR-070R3L

73 1 R70 47k

Panasonic ERJ-2RKF4702X

74 1 R71 430 Ω

Panasonic ERJ-2RKF4300X

75 1 R72 180 Ω

Panasonic ERJ-2RKF1800X

76 1 R73 10k

Panasonic ERJ-2GEJ103X

77 1 R80 2.2 Ω

Yageo RC0402JR-072R2L

78 1 R92 9.53k 1%

Panasonic ERJ-2RKF9531X

79 1 R132 18k 1% Panasonic ERJ-2RKF1802X

80 1 R134 470k Panasonic ERJ-2RKF4703X

81 2 TP1, TP2 SMD Probe Loop Keystone 5015

82 1 Tsns 10 µH, 1:1, 96.9% CoilCraft PFD3215-103ME

83 1 U1 100 V, eGaN Driver

Texas Instruments LM5113TM

84 1 U30 Power & Current Monitor

Linear LT2940IMS#PBF

85 1 U50 Boost Controller

Texas Instruments LM3478MAX/NOPB

86 1 U70 Programmable Oscillator

KDS Daishinku DSO221SHF 6.780

87 1 U71 2 In NAND

Fairchild NC7SZ00L6X

88 1 U72 2 In AND Fairchild NC7SZ08L6X

89 1 U80 Gate Driver with LDO Texas Instruments UCC27611DRV

90 1 U90 1.4 MHz, 24 V, 0.5 A Buck MPS MP2357DJ-LF

91 1 U130 Comparator Texas Instruments TLV3201AIDBVR

QUICK START GUIDE Demonstration System EPC9114

Table 4: Bill of Materials - Source Coil

Item Qty Reference Part Description Manufacturer Part #

1 1 Ctrombone 470 pF, 300 V Vishay VJ1111D471KXLAT

2 1 C1 3.3 pF, 1500 V Vishay VJ1111D3R3CXRAJ

3 1 C2 3.3 pF, 1500 V Vishay VJ1111D3R3CXRAJ

4 1 C3 390 pF, 630 V Vishay VJ1111D391KXLAT

5 1 PCB1 Class 2 Coil Former NuCurrent R42DMTxD1

6 1 J1 SMA PCB Edge Linx CONREVSMA003.031

Table 5: Bill of Materials - Device Board

Item Qty Reference Part Description Manufacturer Part #

1 1 C84 100 nF, 50 V Murata GRM188R71H104KA93D

2 1 C85 10 µF, 50 V Murata GRM32DF51H106ZA01L

3 1 PCB1 Cat3PRU Coastal Circuits Cat3DeviceBoard

4 2 CM1, CM11 470 pF Vishay VJ1111D471KXLAT

5 4 CM2, CM12, CMP1, CMP2 DNP

– –

6 4 CM5, CM7, CMP3, CMP4 DNP

– –

7 1 CM6 56 pF Vishay VJ0505D560JXPAJ

8 1 CM8 68 pF Vishay VJ0505D680JXPAJ

9 4 D80, D81, D82, D83 40 V, 1 A Diodes Inc. PD3S140-7

10 1 D84 LED 0603 Green Lite-On LTST-C193KGKT-5A

11 1 D85 2.7 V 250 mW NXP BZX84-C2V7,215

12 1 D86 LED 0603 Red Lite-On LTST-C193KRKT-5A

13 1 D87 33 V, 250 mW NXP BZX84-C33,215

14 2 J81, J82 .1" Male Vert. Würth 61300211121

15 2 LM1, LM11 82 nH Würth 744912182

16 1 R80 300 mΩ, 1 W Stackpole CSRN2512FKR300

17 1 R81 4.7k Ω Stackpole RMCF1206FT4K70

18 1 R82 422 Ω Yageo RMCF0603FT422R

19 4 TP1, TP2, TP3, TP4 SMD Probe Loop Keystone 5015

20 1 JPR1 Wire Jumper at CM11

– –

EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php), Coilcraft (www.coilcraft.com), and KDS Daishinku America (www.kdsamerica.com) for their support of this project.

QUICK START GUIDE Demonstration System EPC9114

Figure 11: EPC9510-ZVS class-D schematic

19 V 1 Amax

VIN

5 V

VOUT

GND

Icoil

PreRegulator

EPC9510PR_R1_0.SchDoc

VIN

5 V

VOUT

Pre-Regulator

SDM03U40

40 V 30 mA

D71

5 V

Deadtime Fall

Deadtime Rise

P71

U71

NC7SZ00L6X

U72

NC7SZ08L6X

5 V

DSO221SHF 6.780

GND

OUT3

1VCC

U70

5 V

Oscillator

IntOsc

5 V

Logic Supply Regulator

VIN

OSC

.1" Male Vert.

JP70

Oscillator Disable

OSCIntOsc

.1" Male Vert.

J70

External Oscillator

Internal / External Oscillator

SDM03U40

40 V 30 mA

D72

P72

TBD

1 2

R72

OSC

H_Sig1

L_S ig1

OSC

.1" Male Vert.

JP71

OutA

ZVS Tank Circuit

.156" Male Vert.

VIN

Main SupplyVAMP

VOUT

SMA Board Edge

Pre-Regulator Disconnect

SMD probe loop

TP1

SMD probe loop

TP2

VAMP

5 V

GND

LIN

OUTHIN

EPC9510_SE_ZVSclassD_Rev1_0.S chDoc

TBD

Lzvs1

VAMP

H_Sig1

L_S ig1

5 V

Jumper 100

JP10

110 nH

Lsns

Coil Current Sense

100k

1 2

R21

680 pF, 50 V

C21

SDM03U40

40 V 30 mA

D20

SDM03U40

40 V 30 mA

D21

Icoil

TBD

1 2

R71

10 nF, 50 V

C20

10 nF, 50 V

C22

10k

R73

47k

R70

10k

R20

100 nF, 16 V

C72

100 nF, 16 V

C71

22 pF, 50 V

C73

EMPTY

1 µF, 25 V

C90

C92

1 µF 50 V

Czvs1

100 nF, 16 V

C70

Jumper 100

JP72

.1" Male Vert.

JP1

OSC

Reg

0.81V

GND

DRV

CNTL

U90

MP2357DJ-LF

9.53k 1%

R92

49.9k 1%

R91

5 V

22 nF, 25 V

C95

47µH 250 mA

L90

100k 1%

R90

VIN

D95

BAT54KFILM

PD3S140-7

40 V 1 A

D90

1µF, 25 V 1µF, 25 V

C91

TBD

R26

TBD

R25

10k

P25

Current Adjust

10µH 1:1 96.9%

Tsns

FD1

Local Fiducials

FD2 FD3

L g F a» D A A 1H1; U‘u H

QUICK START GUIDE Demonstration System EPC9114

Figure 12: EPC9510- Gate driver and power devices schematic

5 VHS

5 V

Gate Driver

LM5113 TM

OUT

BAT54KFILM

5 V

4.7 V

20 Ω

SDM03U40

EMPTY Synchronous Bootstrap Power Supply

1µF, 10 V

CD0603-Z5 V1

Gbtst

27k

SDM03U40

22 nF, 25 V

GND

5 V

OUT

VAMP

Out

2.2µF, 100 V

C15

10 nF, 100 V

C11

10 nF, 100 V

C12

VAMP

GND

HIN

LIN

HIN

LIN

Probe Hole

PH1

Ground Post

.1" Male Vert.

GP1

100 V, 220 mΩ with BS

Q1A

EPC2107

Q1B

EPC2107

4.7 Ω

1 2

100 nF, 16 V

EMPTY

22 pF

, 50 V

22 pF, 50 V

QUICK START GUIDE Demonstration System EPC9114

Figure 13: Pre-regulator schematic

100k 1%

R44

VIN

Isns

100 pF

C52

.1" Male Vert.

JP50

Pre-Regulator Disable

FA/SD

VOUT

VIN

Vsepic

5 V 5 VGD

5 VGD

GLPH

GLPL

Gate Driver

2.2 Ω

1 2

R80

GLPLGLPH

80 mΩ, 0.4 W

R60

VIN

5 V

VOUT

GND

PreDR PWM

71.5k 1%

R52

124k 1%

R51

5 V

10 nF, 50 V

C53

Ground Post

4.7µF, 50 V

C62

4.7µF, 50 V

C61

2.2µF, 100 V

C64

UVLO

Osc

Pgnd

1.26 V

Cnt

FA/SD

Comp

Agnd

Isens

VIN

U50

LM3478 MAX/NOPB

0 Ω

1 2

R52

100 V, 1A

D60

MBRS110 0T3G

Vfdbk VIN

Isns

10µF, 35 V

C63

1.24V

CLR LE

V-

V+

I-

I+

VCC

GND

UVLC

Latch Hi

CMPOUT

Pmon

Imon

CMP+

U30

LT2940 IMS #PBF

1 2

300 mΩ, 0.125 W

R61

3EP

LDO

VREF

VSS

1VDD

U80

UCC27611DRV

75k

1 2

R33

D36

D35

Current Mode

Power Mode

Pmon

Imon

Vsepic VOUT

634 Ω

1 2

R35 5 V

8.2k 1%

R32

V+

Vsepic

Pcmp

DC Power Monitor

Isns

Pmon

Output Voltage Limit

Output Power Limit

Output Current Limit

SDM03U40

40 V, 30 mA

D40

SDM03U40

40 V, 30 mA

D41

24.9k

1 2

R42

Isns

2.2µF, 100V

C65

10 µH, 150 mA

L80

Isns

VOUT

Comp

100 Ω

1 2

R30

Icoil

100 nF, 100 V

C50

10 Ω

1 2

R50

.1" Male Vert.

GP60

ProbeHole

PH60

20 Ω

1 2

R82

100 nF, 16 V

C81

100 nF, 100 V

C30

22 pF, 50 V

C44

22 pF, 50 V

C82

22 pF, 50 V

C31

5 VGD

1µF, 10 V

C80

Pcmp

49.9k 1%

R38

6.04k

R41

10.5k

R43

150k 1%

R37

261k

1 2

R40

SDM03U40

40 V, 30 mA

D42

U130

TLV3201AIDBVR

100 nF, 16 V

C130

D37

634 Ω

1 2

R36

5 V

Voltage Mode

VOUT

Vom

Pled

Iled

100 V, 65 mΩ

Q60

EPC2036

EP C2007C

100 V, 6 A, 30 mΩ

Q61

GLPL

10nF, 50 V

C43

71k5 1%

R31

100 µH, 2.2 A

L60

1.5k

1 2

R45

EMPTY

10 nF, 100 V

C45

EMPTY

47nF, 25 V

C32

18k 1%

R132

6.8k 1%

R133

470k

1 2

R134

5 V

6.04k

R131

261k

R130

1nF, 50 V

C131

1nF, 50 V

C133

EMPTY

1.00k

1 2

R53

100 nF, 16 V

C51

VOUT

Vfdbk

QUICK START GUIDE Demonstration System EPC9114

Figure 14: Class 2 Source Board Schematic

Figure 15: Category 3 device board schematic

3.3 pF 1111

SMA PCB

Edge

Ctrombone

Adjust on trombone

Amplifier

Connection

470 pF 1111

390 pF 1111

Coil Matching Cl1

Cls2PTU

40 V, 1 A

D80

40 V, 1A

D82

40 V, 1 A

D81

40 V, 1 A

D83

10 µF, 50 V

C85

VRECT

100 nF, 50V

C84

VRECT VRECT VOUT

VOUT

1 2

300 mΩ,1W

R80

.1" Male Vert.

J81

RX Coil

SMD probe loop

TP1

SMD probe loop

TP2

Kelvin Output Current

SMD probe loop

TP3

SMD probe loop

TP4

VOUT

.1" Male Vert.

J82

Output

Cat3PRU

Cl1

DNP

CMP1

CM1

470 pF

CM 11

CM 2

DNP

CM 12

DNP

CMP2

Kelvin Output Voltage

Shunt Bypass

LM 1

LM 11

82 nH

Matching

CMP3

DNPCM P4

DNP pF

CM 5

DNP

CM 6

56 pF

CM 7

DNP

CM 8

68 pF

4.7k

R81

Receive Indicator Over-Voltage Indicator

422 Ω

R82

LED 0 603

Green

D84

LED 0 603 Red

D86

VOUT > 4 V VOUT > 36 V

2.7 V, 250 mW 250 mW

D85

33 V,

D87

EFFIEIENT POWER (ONVERSION l

Demonstration Board Notification

The EPC9114 board is intended for product evaluation purposes only and is not intended for commercial use. Replace components on the Evaluation Board only with those parts shown on

the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk.

As an evaluation tool, this board is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board

builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion

Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant.

The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this Quick Start Guide constitute a sales contract or create any kind of warranty, whether express

or implied, as to the applications or products involved.

Disclaimer: EPC reserves the right at any time, without notice, to make changes to any products described herein to improve reliability, function, or design. EPC does not assume any liability

arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, or other intellectual property whatsoever, nor the

rights of others.

EPC Products are distributed through Digi-Key.

www.digikey.com

For More Information:

Please contact info@epc-co.com

or your local sales representative

Visit our website:

www.epc-co.com

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or text “EPC” to 22828

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