Epc Epc9506 User manual

Demonstration

System EPC9506

Quick Start Guide

ZVS Class-D Wireless Power Amplier

Demo Board using EPC2014

QUICK START GUIDE

Demonstration System EPC9506

DESCRIPTION

The EPC9506 is a high eciency, Zero Voltage Switching (ZVS),

Class-D Wireless Power amplier demonstration board 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 by including all the critical components on a single

board that can be easily connected into an existing system.

The amplier board features the EPC2014 (40 V rated - EPC9506)

enhancement mode eld eect transistor (FET) in an optional

half-bridge topology (single ended conguration) or default full-

bridge topology (dierential conguration), and includes the

gate driver/s and oscillator that ensures operation of the system

at 6.78 MHz. The amplifer board can also be operated using an

external oscillator.

The amplier board is equipped with a pre-regulator that limits the current

of the supply to the amplier. As the amplier draws more current, which

can be due to the absence of a device coil, the pre-regulator will reduce

the voltage being supplied to the amplier that will ensure a safe oper-

ating point. The pre-regulator also monitors the temperature of the main

amplier FETs and will reduce current if the temperature exceeds 85°C.

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 simplied diagram of the amplier board is given in Figure 1.

For more information on the EPC2014 eGaN FET please refer to the data-

sheet available from EPC at www.epc-co.com. The data-sheet should be

read in conjunction with this quick start guide.

Table 1: Performance Summary (TA = 25 °C) EPC9506

Symbol Parameter Conditions Min Max Units

VDD

Control Supply

Input Range 7 12 V

VIN

Bus Input Voltage Range –

Pre-Regulator mode 8 32 V

VIN

Bus Input Voltage Range –

Bypass mode 0 32 V

VOUT

Switch Node

Output Voltage VIN V

IOUT

Switch Node Output Current

(each) 10* 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

Open Drain/

Collector -0.3 5.5 V

IPre_Disable

Pre-regulator Disable

Current

Open Drain/

Collector -1 1 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

* Assumes inductive load, maximum current depends on die temperature – actual maximum current with be subject to

switching frequency, bus voltage and thermals.

EPC9506 Amplier Board Photo

QUICK START GUIDE

Demonstration System EPC9506

DESCRIPTION

The Amplier Board (EPC9506)

Figure 1 shows a diagram of the EPC9506 ZVS class D amplier with pre-

regulator. The pre-regulator is set to a specied DC output current limit (up

to 1.5 A) by adjusting P49 and operates from 8 V through 36 V input. The

output voltage of the pre-regulator is limited to approximately 2 V below

the input voltage. The pre-regulator can be bypassed by moving the jumper

(JP60) over from the right 2 pins to the left 2 pins. To measure the current

the amplier is drawing, an ammeter can be inserted in place of the jumper

(JP60) in the location based on the operating mode (pre-regulator or bypass).

The amplier comes with its own oscillator that is pre-programmed to

6.78 MHz ± 678 Hz. It can be disabled by placing a jumper into J70 or can

be externally shutdown using an externally controlled open collector / drain

transistor on the terminals of J70 (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 J71 (note which is the ground connection) and the jumper (JP70) is

moved from the right 2 pins to the left 2 pins.

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

using J51. The pre-regulator can be bypassed, to increase the operating

voltage (with no current or thermal protection) to the amplier or to use

an external regulator, by moving the jumper JP60 from the right 2 pins to

the left 2 pins. Jumper JP60 can also be used to connect an ammeter to

measure the current drawn by the amplier (make sure the ammeter

connects to the pins that correspond to the mode of operation either

bypass or pre-regulator).

Single Ended Operation

The amplier can be congured for single ended operation where only

devices Q1 and Q2 are used. In this mode only LZVS1 and CZVS are used to

establish ZVS operation. If Q11 and Q12 are populated, then the following

changes need to be made to the board:

1) Remove R76 and R77

2) Short out C46 and C47

3) Short the connection of JMP1 (back side of the board)

4) Remove LZVS12 (if populated)

5) Add LZVS1 (270 nH)

6) Check that CZVS1 is populated, if not then install.

7) R74 and R75 may need to be adjusted for the new operating

condition to achieve maximum eciency (see section on ZVS timing

adjustment).

ZVS Timing Adjustment

Setting the correct time to establish ZVS transitions is critical to

achieving high eciency with the EPC9506 amplier. This can be done

by selecting the values for R74 and R75 respectively. This procedure is

best performed using potentiometer P74 and P75 installed that is used to

determine the xed resistor values. The procedure is the same for both

single ended and dierential mode of operation. The timing MUST initially

be set WITHOUT the source coil connected to the amplier. The timing

diagrams are given in Figure 4 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. Remove the jumper in JP60 and insert it into J51 to place the EPC9506

amplier in bypass mode. With power o connect the main input

power supply (+) bus to the center pin of JP60 (pin 2) and the ground

of the main power to the ground (-) connection of J50 -VIN.

2. With power o, connect the control input power supply bus to +VDD

(J90). Note the polarity of the supply connector.

3. Connect a LOW capacitance oscilloscope probe to the probe-hole J2

and lean against the ground post as shown in Figure 2.

4. Turn on the control supply – make sure the supply is between 7 V and

12 V range (7.5 V is recommended).

5. Turn on the main supply voltage to the required predominant

operating value (such as 24 V but NEVER exceed the absolute

maximum voltage of 32 V).

6. While observing the oscilloscope adjust P74 for the rising edge

of the waveform so achieve the green waveform of gure 4.

Repeat for the falling edge of the waveform by adjusting P75.

7. Check that the setting remains optimal with a source coil attached.

In this case it is important that the source coil is TUNED to resonance

WITH an applicable load. Theoretically the settings should remain

unchanged. Adjust if necessary.

8. Replace the potentiometers with xed value resistors. Congure

the EPC9506 amplier back to normal operation by removing the

power connections to J50 and JP60, removing the jumper in J51 and

inserting it back into JP60 (right 2 pins 2 & 3).

Dierential Operation

The amplier can be congured for dierential operation where all the

devices are used; Q1, Q2, Q11 and Q12. In this mode either LZVS1, LZVS11 and

CZVS or LZVS12 only is used to establish ZVS operation.

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 o. The capacitance CZVS is chosen to have a very small

ripple voltage component and is typically around 1 µF. The amplier supply

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

for LZVSx which needs to be sucient 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]

fsw = Operating frequency [Hz]

COSSQ = Charge equivalent device output capacitance [F].

Note that the amplier supply voltage VAMP is absent from the equation as

it is accounted for by the voltage transition time. 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 o

of the devices (which will increase device losses). Typical voltage

transition times range from 2 ns through 12 ns. For the dierential case

the voltage and charge (COSSQ) are doubled.

LZVS = ∆tvt

8 ∙ fsw∙ COSSQ

COSSQ =

VAMP

∙

∫

VAMP

COSS (v) ∙ dv

QUICK START GUIDE

Demonstration System EPC9506

QUICK START PROCEDURE

The EPC9506 amplier board is easy to set up and evaluate the

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

The EPC9506 can be operated using any one of two alternative methods:

a. Using the pre-regulator

b. Bypassing the pre-regulator

a. Operation using the pre-regulator

The pre-regulator is used to supply power to the amplier in this mode

and will limit the DC current to the amplier based on the setting. The

pre-regulator also monitors the temperature of the amplier and will limit

the current in the event the temperature exceeds 85°C.

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

connections and make sure jumper (JP60 is set to pre-regulator

– right 2 pins).

2. With power o, connect the main input power supply bus to +VIN

(J50). Note the polarity of the supply connector.

3. With power o, connect the control input power supply bus to +VDD

(J90). Note the polarity of the supply connector.

4. Select and connect an applicable load resistance to the device board.

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

6. Turn on the control supply – make sure the supply is between 7 V and

12 V (7.5 V is recommended).

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

recommended to start at 8 V and do not exceed the absolute maximum

voltage of 32 V ).

Once operation has been conrmed, adjust the main supply voltage

within the operating range and observe the output voltage,

eciency and other parameters on both the amplier and device

boards.

9. 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.

b. Operation bypassing the pre-regulator

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

connected directly to the amplier . This allows the amplier to be

operated using an external regulator.

In this mode there is no current or thermal protection for the eGaN FETs.

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

connections and remove the jumper JP60. Never connect the main

power positive (+) to J50 when operating in bypass mode.

2. With power o, connect the main input power supply ground to the

ground terminal of J50 (-) and the positive (+) to the center pin of JP60.

3. With power o, connect the control input power supply bus to +VDD

(J90). Note the polarity of the supply connector.

4. Select and connect an applicable load resistance to the device board.

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

6. Turn on the control supply – make sure the supply is between 7 V and

12 V range (7.5 V is recommended).

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

recommended to start at 2V and do not exceed the absolute maximum

voltage of 32 V).

8. Once operation has been conrmed, adjust the main supply

voltage within the operating range and observe the output voltage,

eciency and other parameters on both the amplier and device

boards. See Pre-Cautions when operating in the bypass mode

9. 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.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 (J2 and J3 as shown in Figure 3).

THERMAL CONSIDERATIONS

The EPC9506 demonstration system showcases the EPC2014

eGaN FET 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 EPC9506 demonstration system has limited current and thermal protection only

when operating o the Pre-Regulator. When bypassing the pre-regulator there is no current

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

temperature the devices. Wide coil coupling and load range variations can lead to increased

losses in the devices.

Pre-Cautions

The EPC9506 demonstration system has no controller or enhanced

protections systems and therefore should be operated with caution.

Some specic precautions are:

1. Please contact EPC at info@epc-co.com should the tuning of the coil be

required to change to suit specic conditions so that it can be correctly

adjusted for use with the ZVS Class-D amplier.

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

evaluation it is possible present conditions to the amplier that may

cause the devices to overheat. Always check operating conditions and

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

QUICK START GUIDE

Demonstration System EPC9506

VAMP

Q1 LZVS12

Q11

Q12

LZVS11

CZVS

LZVS1

Coil

Connection

Single

Ended

Operation

Jumper

Pre-

Regulator

Pre-Regulator

Jumper

JP60

J50

VIN

Bypass Mode

Connection

Pre-

Regulation

Connection

Figure 1: Diagram of EPC9506 Amplier Board

Figure 2: Proper Connection and Measurement Setup for the Amplier Board

7-12 VDC

Gate Drive and

Control Supply

(Note Polarity)

6-32 VDC

VIN Supply

(Note Polarity)

Source Coil

Connection

Switch-node Main

Oscilloscope probe

Switch-node

Secondary

Oscilloscope probe

Ground Post

Amplier Voltage

Source Jumper

Disable Oscillator

Jumper

Pre-Regulator

Current Setting

Pre-Regulator

Timing Setting

(Not Installed)

Amplier

Timing Setting

(Not Installed)

Stand-o Mounting

Holes (x4) Pre-Regulator Jumper

Bypass Connection

External

Oscillator

Disable Pre-Regulator

Jumper

Oscillator Selection

Jumper

External /Internal Amplier Board – Front-side

QUICK START GUIDE

Demonstration System EPC9506

Figure 3: 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 4: ZVSTiming Diagrams

Shoot-

through

Q2 turn-on

Q1 turn-o

VAMP

time

ZVS

Partial

ZVS

ZVS + Diode

Conduction

Shoot-

through

Q1 turn-on

Q2 turn-o

VAMP

0 time

ZVS

Partial

ZVS

ZVS + Diode

Conduction

QUICK START GUIDE

Demonstration System EPC9506

Table 3: Bill of Materials - Amplier Board

Item Qty Reference Part Description Manufacturer Part #

1 12 C1, C2, C3, C4, C11, C12, C13, C14

C55, C66, C67, C68 10 nF, 100 V TDK C1005X7S2A103K050BB

2 7 C5, C6, C15, C16, C62, C64, C65 4.7 µF, 50 V Taiyo Yuden UMK325BJ475MM-T

3 4 C40, C44 C52, C60 4.7 µF, 16 V TDK C1608X5R1C475K

4 2 C41, C45 22 nF, 25 V TDK C1005X7R1E223K050BB

5 5 C42, C43, C46, C47 C84 47 pF, 50 V Yageo CC0402JRNPO9BN470

6 1 C50 1 µF, 50 V Taiyo Yuden UMK107AB7105KA-T

7 2 C53, C54 2.2 nF, 50 V Yageo CC0402KRX7R9BB222

8 1 C56 1 nF, 50 V Yageo CC0402KRX7R9BB102

9 3 C57, C63, C70 100 nF, 25 V TDK C1005X7R1E104K050BB

10 4 C71, C72, C80, C81 100 nF, 25 V TDK C1608X7R1E104K

11 1 C73 DNP, 100 pF, 25 V Generic Generic

12 2 C82, C83 100 pF, 25 V TDK C1608C0G1H101J080AA

13 3 C90, C91, C92 1 µF, 25 V TDK C1608X7R1E105K

14 1 Czvs1 DNP 1 µF, 50 V Taiyo Yuden C2012X7R1H105K125AB

15 4 D74, D75, D82, D83 40 V, 30 mA Diodes Inc. SDM03U40

16 1 J1 SMA Board Edge Linx CONREVSMA013.062

17 2 J44, J61 .1" Male Vert. Tyco 4-103185-0-01

18 1 J50 .156" Male Vert. Würth 645002114822

19 4 J51, J70, J71, J90 .1" Male Vert. Würth 61300311121

20 1 JMP1 DNP

– –

21 2 JP60, JP70 .1" Male Vert.

Tyco 4-103185-0-03

22 1 L60 10µ H Würth

744314101

23 2 Lzvs1, Lzvs11 DNP, 270 nH

CoilCraft 2222SQ-271JEB

24 1 Lzvs12 500 nH

CoilCraft 2929SQ-501JEB

25 1 P49 DNP, 10k Ω

Murata PV37Y103C01B00

26 4 P74, P75, P82, P83 DNP, 1k Ω

Murata PV37Y102C01B00

27 6 Q1, Q2, Q11, Q12, Q60, Q61 40 V, 10 A, 16 mΩ

EPC EPC2014

28 6 R1, R2, R11, R12, R60, R61 2.2 Ω

Yageo RC0402JR-072R2L

29 1 R47 6.04k Ω

Panasonic ERJ-2RKF6041X

30 1 R48 2.74k Ω

Panasonic ERJ-2RKF2741X

31 1 R49 3.3k Ω

Panasonic ERJ-2RKF3301X

32 1 R50 40.2k Ω Yageo RC0402FR-0740K2L

33 1 R51 280k Ω Panasonic ERJ-2RKF2803X

34 1 R52 10k Ω Yageo RC0402FR-0710KL

35 1 R54 15k Ω Yageo RC0402JR-0715KL

36 3 R55, R56, R84 10 Ω Yageo RC0402FR-0710RL

37 1 R57 374k Ω Panasonic ERJ-2RKF3743X

38 1 R58 124k Ω Panasonic ERJ-2RKF1243X

39 1 R59 45.3k Ω Panasonic ERJ-2RKF4532X

40 1 R62 24 mΩ, 1 W Susumu PRL1632-R024-F-T1

41 1 R70 47k Ω Stackpole RMCF0603JT47K0

42 1 R73 10k Ω Yageo RC0603JR-0710KL

43 1 R74 100 Ω Panasonic ERJ-3EKF1000V

44 1 R75 124 Ω Panasonic ERJ-3EKF1240V

45 2 R76, R77 0 Ω Yageo RC0603JR-070RL

(continued on next page)

QUICK START GUIDE

Demonstration System EPC9506

Table 3: Bill of Materials - Amplier Board (continued)

Item Qty Reference Part Description Manufacturer Part #

46 1 R82 31.6 Ω Panasonic ERJ-3EKF31R6V

47 1 R83 191 Ω Panasonic ERJ-3EKF1910V

48 1 RT1 470k Ω at 25°C Murata NCP15WM474E03RC

49 2

TP1, TP2

SMD probe loop Keystone 5015

50 3

U40, U44, U60

100 V eGaN Driver Texas Instruments LM5113TM

51 1

U50

Step Down Controller Linear Technologies LT3741EUF#PBF

52 1

U70

Programmable Oscillator – 6.78 MHz EPSON SG-8002CE

53 2

U71, U80

2 In AND Fairchild NC7SZ08L6X

54 2

U72, U81

2 In NAND Fairchild NC7SZ00L6X

55 1

U90

5.0 V, 250 mA, DFN Microchip MCP1703T-5002E/MC

56 2

JPR1 (JP60 right), JPR2

(JP70 right)

.1” jumper TE Connectivity 382811-8

EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php) for their support of this project.

QUICK START GUIDE

Demonstration System EPC9506

2Ω2

1 2

5V 5VHS 1

5VHS 1

Gate Driver

2 2n F , 2 5V

C41

U40

GRH1 GRL1

OUTA

Dierential ZVS Class D Wireless Power Source Board using EPC2014

4.7 µ F 5 0V, 2 .2µF 100 V

500 nH

L zvs1 2

40 V, 30 mA

D74

40 V 30 mA

D75

100 nF, 25 V

C72

100 nF, 25 V

C71

10k

R73

Deadtime Left

Deadtime Right

DNP 1k

P7 5

DNP 1k

P74

100 pF, 25 V

C73

U72

U71

NC 7 S Z 0 8L 6X

124 Ω

1 2

R75

100 Ω

1 2

R74

GND

OUT3

Pgm Osc.

1VCC

U70

100 nF, 25 V

NC7SZ00L6X

C70

Oscillator

IntOs c

GRL2

GRH2

5V 5VHS2

4 .7 µF , 16 V

C44

5 VHS2

GLL2

GLH2

Gate Driver

Pre-Regulator

U44

LM5113TM

EPC2014

L _S ig

R_ S ig

2Ω2

1 2

R11

2Ω2

1 2

R12

GRH2

GLH1

GLL1

GRL1

GRH1

GLL1

GLH2 GLL2

GRL2

Q11

Q12

.1 " Ma le Ve rt.

J9 0

7.5 VDC - 12 VDC

Logic Supply Regulator

1 µF , 25 V

C90

1 µF , 2 5 V

C91

V7 V7IN IN

5.0 V 250 mA DF N

OUT

G N D

U90

1µF , 2 5 V

C92

L ogic Supply

OUTA

OUT B

47k

R70

OSC

.1 " Male Vert.

J7 0

Disable

OutB

L _S ig

R_ S ig

DNP 1 µF 5 0V

Czvs1

Main Amplier

Secondary Amplier

Ground Post

Board Standos

2 2n F , 2 5V

C45

4 .7 µF , 16 V

C40

1 0n F , 1 00 V

C11

1 0n F , 1 00 V

C12

1 0n F , 1 00 V

C13

1 0n F , 1 00 V

C14

DNP 270 nH

DNP 27 0 nH

Lz vs 1 1

Lz vs 1

Z V S Ta nk C ir cuit

OUT B

.1 56 " Male Vert.

J5 0

VIN VIN VOUT

VAMP

VAMP VAMP VAMP

VAMP

VAMP VAMP VAMP

VAMP

Main Supply

6 V ~ 32 V 2A max EPC9506

.1 " Ma le Ve rt.

JP 60

SMA Board Edge

DNP

JMP 1

Single Ended

Operation Only

VOUT

GND

Temp

PreRegulator

EPC9507PR_r1_1.SchDoc

VOUT

VIN

4 70 k @ 2 5 °C

t°

RT 1

T emp

Temp

R_ S ig

L _S ig

4 7p F , 5 0 V

C42

4 7p F , 5 0 V

C43

4 7p F , 5 0 V

C46

4 7p F , 5 0 V

C47

0Ω

1 2

R76

1 2

R77

.1" Male Vert.

JP 70

ExtOsc

OSC

IntOsc

.1 " Male Ve rt.

J7 1

External Oscillator

Internal/External Oscillator

ExtOsc

.1 " Ma le Ve rt.

J44

ProbeHole

Probe Hole

P r e-R egu lator B yp ass

T P1

SMD pro be loop

SMD probe loop

TP2

F D1

Local Fiducials

F D2

4.7 µ F 5 0V, 2 .2µF 100 V

C15

4.7 µ F 5 0V, 2 .2µF 100 V

C16

2Ω2

1 2

5V 5VHS 1

5VHS 1

Gate Driver

2 2n F , 2 5V

C41

U40

GRH1 GRL1

OUTA

Dierential ZVS Class D Wireless Power Source Board using EPC2014

4.7 µF 50 V, 2.2 µF 10 0V

500nH

L zv s1 2

40 V, 30 mA

D74

40 V 30 mA

D75

100 nF, 25 V

C72

100 nF, 25 V

C71

10k

R73

Deadtime Left

Deadtime Right

DNP 1k

P7 5

DNP 1k

P74

100 pF, 25 V

C73

U72

U71

NC 7 S Z 0 8L 6 X

124 Ω

1 2

R75

100 Ω

1 2

R74

GND

OUT3

Pgm Osc.

1VCC

U70

100 nF, 25 V

NC7SZ00L6X

C70

Oscillator

IntOs c

GRL2

GRH2

5V 5VHS2

4 .7 µF , 16V

C44

5 VHS2

GLL2

GLH2

Gate Driver

Pre-Regulator

U44

LM5113TM

EPC2014

L _S ig

R_ S ig

2Ω2

1 2

R11

2Ω2

1 2

R12

GRH2

GLH1

GLL1

GRL1

GRH1

GLL1

GLH2 GLL2

GRL2

Q11

Q12

.1 " Ma le Ve rt.

J90

7.5 VDC - 12 VDC

Logic Supply Regulator

1 µF , 25 V

C90

1 µF , 2 5 V

C91

V7 V7IN IN

5.0 V 250 mA DF N

OUT

G N D

U90

µF , 2 5V

L ogic Supply

OUTA

OUT B

47k

R70

OSC

.1" Male Vert.

J70

Disable

OutB

L _S ig

R_ S ig

DNP 1 µ F 5 0V

Czvs1

Main Amplier

Secondary Amplier

Ground Post

Board Standos

2 2n F , 2 5V

C45

4 .7 µF , 16 V

C40

1 0n F , 1 00 V

C11

1 0n F , 1 00 V

C12

1 0n F , 1 00 V

C13

1 0n F , 1 00 V

C14

DNP 270 nH

Lzvs 1 1

Lzvs 1

Z V S Ta nk C ir c uit

OUT B

.1 56 " Male Vert.

J50

VIN VIN VOUT

VAMP

VAMP VAMP VAMP

VAMP

VAMP VAMP VAMP

VAMP

Main Supply

6 V ~ 32 V 2A max EPC9506

.1 " Ma le Ve rt.

JP6 0

SMA Board Edge

DNP

JMP 1

Single Ended

Operation Only

VOUT

GND

Temp

PreRegulator

EPC9507PR_r1_1.SchDoc

VOUT

VIN

4 70 k @ 2 5°C

t°

RT 1

T emp

Temp

R_ S ig

L _S ig

4 7p F , 5 0 V

C42

4 7p F , 5 0 V

C43

4 7p F , 5 0 V

C46

4 7p F , 5 0 V

C47

0Ω

1 2

R76

1 2

R77

.1" Male Vert.

JP7 0

ExtOsc

OSC

IntOsc

.1 " Male Ve rt.

J71

External Oscillator

Internal/External Oscillator

ExtOsc

.1 " Ma le Ve rt.

J44

ProbeHole

Probe Hole

P r e-R egu lato r B ypa ss

T P1

SMD pro be loop

SMD probe loop

TP2

F D1

Local Fiducials

F D2

4.7 µF 50 V, 2.2 µF 10 0V

C15

4.7 µF 50 V, 2.2 µF 10 0V

C16

Figure 5: EPC9506 Source Board Amplier Schematic

QUICK START GUIDE

Demonstration System EPC9506

GND

UVLO

O s c

1.5V

1.2V

Cnt

S ync

Cnt1

S S

E N/UV LO

VREF

C nt2

U50

1 µF , 5 0 V

C50

10k

R52

280k

R51

40.2 k

1 2

R50 HG

4 .7 µF , 16 V

C5 2

VIN

VCCINT

S ns+

VOUT

Vfd bk

15k

R54

2 .2 nF , 50V

C53

2.2 nF , 50 V

C54

.1 " Male Ve rt.

J51

PreRegulator Disable

PreDis

VOUT

10Ω

1 2

R55

1 2

R56

1 nF , 5 0V

C56

VIN

10 uH

L 60

G UP H

G UP L

5V 5VUP

4 .7 µF , 16 V

C60

5VUP

GL PH

GL PL

Gate Driver

U60

LM5113TM

LT3741EUF #PBF

HG PR

LG PR

2Ω2

1 2

R61

1 2

R60

GUPH G UP L

GL PLGL PH

Q61

Q60

1 00 n F , 2 5 V

C63

S W

S ns+

1 2

24mΩ 1W

R62

S W

1 0n F , 1 00 V

C66

1 0n F , 1 00 V

C67

VIN

VIN VIN VIN

VIN

VOUT

1 0n F , 1 00 V

C68

GND

40 V 3 0 mA

D82

40V 30mA

D83

1 00 n F , 2 5 V

C81

1 00 n F , 2 5 V

C80

10Ω

1 2

R84

Deadtime Lower

Deadtime Upper

DNP 1k

P83

DNP 1k

P82

4 7p F , 5 0 V

C84

U81

U80

NC7SZ08L6X

191Ω

1 2

R83

31.6Ω

1 2

R82

PWM

LG PR

PWM

Buer

124k

R58

374k

R57

VIN

VREF

3.3 k

R49

VREF

1 00 n F , 2 5 V

C57

DNP 10 k

P49

Current Set

Temp

45 .3k

R59

VREF

1 0n F , 1 00V

C55

1 00 pF , 2 5V

C82

1 00 pF , 2 5V

C83

2.7 4k

R48

6.0 4k

R47

.1 " Ma le Ve rt.

J61

ProbeHole

J62

Ground Post

4.7 µF 50 V, 2 .2µF 100V

C64

4.7 µF 50 V, 2 .2µF 100V

C65

4.7 µF 50 V,

2.2 µF 100 V

C62

VOUT

EPC2014

NC7SZ00L6X

EPC2014

Figure 6: EPC9506 -Source Board Pre-Regulator Schematic

Demonstration Board Notication

The EPC9506 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not designed for compliance with the European

Union directiveon electromagnetic compatibility orany other suchdirectives or regulations. Asboard builds are at timessubject to product availability, it is possiblethat boardsmay contain

components or assembly materials that are not RoHS compliant. Ecient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No

Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications assistance, customer product design, software