IEPC EPC9001C User manual

Development Board
EPC9001C
Quick Start Guide
40 V Half-Bridge with Gate Drive, Using EPC2015C

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 2
EPC9001C
DESCRIPTION
The EPC9001C development board is a 40 V maximum device
voltage, 15 A maximum output current, half bridge with onboard
gate drives, featuring the EPC2015C enhancement mode (eGaN®)
eld eect transistor (FET). The purpose of this development
board is to simplify the evaluation process of the EPC2015C eGaN
FET by including all the critical components on a single board that
can be easily connected into any existing converter.
The EPC9001C development board is 2” x 1.5” and contains
two EPC2015Cs eGaN FET in a half bridge conguration using
Texas Instruments LM5113 gate driver, supply and bypass capacitors.
The board contains all critical components and layout for optimal
switching performance. There are also various probe points to
facilitate simple waveform measurement and eciency calculation. A
complete block diagram of the circuit is given in Figure 1.
For more information on the EPC2015Cs eGaN FET please refer to
the datasheet 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)
SYMBOL PARAMETER CONDITIONS MIN MAX UNITS
V
DD
Gate Drive Input Supply Range 7 12 V
V
IN
Bus Input Voltage Range 28* V
V
OUT
Switch Node Output Voltage 40 V
I
OUT
Switch Node Output Current 15* A
V
PWM
PWM Logic Input Voltage Threshold Input ‘High’ 3.5 6 V
Input ‘Low’ 0 1.5 V
Minimum ‘High’ State Input Pulse Width VPWM rise and fall time < 10ns 60 ns
Minimum ‘Low’ State Input Pulse Width VPWM rise and fall time < 10ns 200#ns
* Assumes inductive load, maximum current depends on die temperature – actual maximum current with be subject to switching frequency, bus voltage and thermals.
# Limited by time needed to‘refresh’ high side bootstrap supply voltage.
www.epc-co.com
Quick Start Procedure
Development board EPC9001C is easy to set up to evaluate the performance of the EPC2015C eGaN FET. Refer to Figure 2. for proper
connect and measurement setup and follow the procedure below:
1. With power o, connect the input power supply bus to +VIN (J5, J6) and ground / return to –VIN (J7, J8).
2. With power o, connect the switch node of the half bridge OUT (J3, J4) to your circuit as required.
3. With power o, connect the gate drive supply to +VDD (J1, Pin-1) and ground return to –VDD (J1, Pin-2).
4. With power o, connect the input PWM control signal to PWM (J2, Pin-1) and ground return to any of the remaining J2 pins.
5. Turn on the gate drive supply – make sure the supply is between 7 V and 12 V range.
6. Turn on the bus voltage to the required value (do not exceed the absolute maximum voltage of 100 V on VOUT).
7. Turn on the controller / PWM input source and probe switching node to see switching operation.
8. Once operational, adjust the bus voltage and load PWM control within the operating range and observe the output switching behavior,
eciency and other parameters.
9. For shutdown, please follow steps in reverse.
NOTE. When measuring the high frequency content switch node (OUT), care must be taken to avoid long ground leads. Measure the switch node (OUT) by placing the
oscilloscope probe tip through the large via on the switch node (designed for this purpose) and grounding the probe directly across the GND terminals provided. See
Figure 3 for proper scope probe technique.
THERMAL CONSIDERATIONS
The EPC9001C development board showcases the EPC2015C eGaN FET. Although the electrical performance surpasses that for traditional silicon
devices, their relatively smaller size does magnify the thermal management requirements. The EPC9001C is intended for bench evaluation with low
ambient temperature and convection cooling. The addition of heat-sinking and forced air cooling can signicantly increase the current rating of
these devices, but care must be taken to not exceed the absolute maximum die temperature of 150°C.
NOTE. The EPC2015C development board does not have any current or thermal protection on board.

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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 3
EPC9001C
Figure 4:Typical Waveforms forVIN = 24 V to 1.2V/15 A (500 kHz) Buck converter
CH1:VPWM Input voltage – CH3: (IOUT) Switch node current – CH4: (VOUT) Switch node voltage
Figure 1: Block Diagram of EPC9001C Development Board
Figure 2: Proper Connection and Measurement Setup
Figure 3: Proper Measurement of Switch Node – OUT
VDD
VIN
PWM
Input OUT
Gate Drive
Regulator
Logic and
Dead-time
Adjust
LM5113
Gate
Driver
Gate Drive
Supply Half-Bridge with Bypass
7V – 12 V
VDD Supply
PWM Input
External Circuit
VIN Supply
<70 V
VIN
++
+
––
–
IIN
V
A
Gate Drive Supply
(Note Polarity)
(For Eciency
Measurement)
Switch Node
V DEVELOPMENT BOARD
eGaN® FET © EPC 2013
Rev. 5.0
EPC
EFFICIENT POWER CONVERSION
EPC9001C, 40
Do not use probe ground lead
Place probe in large via at OUTMinimize loop
Ground probe
againstTP3
EPC900 V DEVELOPMENT BOARD1C, 40
eGaN® FET © EPC 2013
Rev. 5.0
EPC
EFFICIENT POWER CONVERSION
Table 2 : Bill of Material
Item Qty Reference Part Description Manufacturer / Part #
1 3 C4, C10, C11, Capacitor, 1 µF, 10%, 25 V, X5R Murata, GRM188R61E105KA12D
2 2 C16, C17 Capacitor, 100 pF, 5%, 50 V, NP0 Kemet, C0402C101K5GACTU
3 2 C9, C19 Capacitor, 0.1 µF, 10%, 25 V, X5R TDK, C1005X5R1E104K
4 3 C21, C22, C23 Capacitor, 4.7 µF, 10%, 50 V, X5R TDK, C2012X5R1H475K125AB
5 2 D1, D2 Schottky Diode, 30 V Diodes Inc., SDM03U40-7
6 3 J1, J2, J9 Connector 2pins of Tyco, 4-103185-0
7 1 J3, J4, J5, J6, J7, J8 Connector FCI, 68602-224HLF
8 2 Q1, Q2 eGaN® FET EPC, EPC2015C
9 1 R1 Resistor, 10.0 K, 5%, 1/8 W Stackpole, RMCF0603FT10K0
10 2 R2, R15 Resistor, 0 Ohm, 1/8 W Stackpole, RMCF0603ZT0R00
11 1 R4 Resistor, 7.5 Ohm, 1%, 1/8 W Stackpole, RMCF0603FT7R50
12 1 R5 Resistor, 47 Ohm, 1%, 1/8 W Stackpole, RMCF0603FT47R0
13 6 R19, R20, R21, R22, R23, R24 Resistor, 0 Ohm, 1/16 W Stackpole, RMCF0402ZT0R00
14 2 TP1, TP2 Test Point Keystone Elect, 5015
15 1 TP3 Connector 1/40th of Tyco, 4-103185-0
16 1 U1 I.C., Logic Fairchild, NC7SZ00L6X
17 1 U2 I.C., Gate driver Texas Instruments, LM5113TME
18 1 U3 I.C., Regulator Microchip, MCP1703T-5002E/MC
19 1 U4 I.C., Logic Fairchild, NC7SZ08L6X
20 0 R14 Optional Resistor
21 0 D3 Optional Diode
22 0 P1, P2 Optional Potentiometer

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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 4
EPC9001C
Development Board EPC9001C Schematic
Rev 5.0
VCC
7 - 12 Vdc
C4
1 µF, 25 V
C10 1 µF, 25 V
1 2
J1 CON2
R1
10k
PWM1
GND A B
Y
VDD
U1
NC7SZ00L6X
GND
(Optional)
1
TP3
C21 C22 C23 4.7 µF, 50 V
CON1
1
2
3
4
J8 CON4
1
2
3
4
J7 CON4
1
2
3
4
J3
CON4
1
2
3
4
J4
CON4
1
2
3
4
J6 CON4
1
2
3
4
J5 CON4
C11 1 µF, 25 V
1
TP2 Keystone 5015
1
TP1 Keystone 5015
R2 Zero
R14
Optional
R15 Zero
R5
47.0
D2
SDM03U40
R4
7.5
C16
100 pF
D1
SDM03U40
PWM2
VCC
OUT 1
NC 2 NC 3
GND 4
NC
5
NC
6
NC
7
IN
8
GND
9
U3 MCP1703
1 2
J2
CON2
1 2
J9
CON2
2
P1
Optional
2
P2
Optional
D3 Optional
GND A B
Y
VDD
U4
NC7SZ08L6X
Q1
EPC2015C
Q2
EPC2015C
70V Max
SWOUT
C9 0.1 µF, 25 V
R19 Zero
R20 Zero
R23 Zero
R24 Zero
U2
LM5113TM C19
0.1 µF, 25 V
C17
100 pF

Demonstration Board Notication
The EPC9001C boards are 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.As board buildsare attimes subject to product availability, it is possible that 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
performance, or infringement of patents or any other intellectual property rights of any kind.
EPC reserves the right at any time, without notice, to change said circuitry and specications.
EPC Products are distributed through Digi-Key.
www.digikey.com
For More Information:
Please contact [e-mail]
or your local sales representative
Visit our website:
www.epc-co.com
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