EPC EPC9041 User manual

Development Board
EPC9041
Quick Start Guide
EPC2105
Monolithic Half-Bridge with Gate Drive
Revision 1.0

QUICK START GUIDE Demonstration System EPC9041
2 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
DESCRIPTION
These development boards are in a monolithic half-bridge topology with
on-board gate drives, featuring the EPC2105 eGaNIC (Enhancement-mode
Gallium Nitride Integrated Circuit). The purpose of these development
boards is to simplify the evaluation process of these monolithically
integrated eGaN FETs by including all the critical components on a single
board that can be easily connected into any existing converter.
The development board is 2” x 2”and contains one eGaNIC in half-bridge
conguration using theTexas Instruments LM5113 gate driver, supply and
bypass capacitors. The board contains all critical components and layout
for optimal switching performance and has additional area to add buck
output lter components on board. 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 EPC2105 eGaNIC, 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.
SETUP AND OPERATION
The development boards are easy to set up to evaluate the performance
of the eGaNIC. The board allows the on-board placement of buck output
lter components. 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 input 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 voltages).
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.
Table 1: Performance Summary (TA= 25°C) EPC9041
Symbol Parameter Conditions Min Max Units
VDD Gate Drive Input Supply Range 7 12 V
VIN Bus Input Voltage Range 50* V
VOUT Switch Node Output Voltage 50* V
IOUT Switch Node Output Current 20** A
VPWM PWM Logic InputVoltage 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
50 ns
Minimum‘Low’State Input Pulse
Width VPWM rise and fall time < 10ns
100# ns
*Maximum input voltage depends on inductive loading.
** Maximum current depends on die temperature – actual maximum current with be subject to switching frequency, bus
voltage and thermal cooling. Symmetrical eGaN intended for 50% duty cycle or low step-down ratio applications.
# Limited by time needed to‘refresh’high side bootstrap supply voltage.
VERSION
*
(For Eciency
Measurement)
Gate Drive Supply
(Note Polarity)
+
7 V – 12 V
+
_
PWM Input
+
VDD Supply
VIN Supply
V
IN
(For Eciency
Measurement)
Pads for Buck
Output Filter
See table for max
V
OUT
V
SW
PGND
+
VOUT
V
A
IIN
_
_
_V
50V
EPC9041 DEVELOPMENTBOARD
Figure 2: Proper Connection and Measurement Setup
Figure 1: Block Diagram of Development Board
VDD
VIN
PWM
Input
OUT
VSW
Gate Drive Supply
Pads for Buck Output Filter
Monolithic
Half Bridge
Logic and
Dead-time
Adjust
Gate Drive
Regulator
LM5113
Gate
Driver

QUICK START GUIDE Demonstration System EPC9041
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 3
Do not use probe ground lead
Place probe tip
in large via at OUT
Minimize loop
Ground probe
againstTP3
EPC9041 DEVELOPMENTBOARD
Figure 3: Proper Measurement of Switch Node – OUT
THERMAL CONSIDERATIONS
The EPC9041 development boards showcase the EPC2105 eGaNIC.
These development boards are 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. These development boards do not have any current or thermal protection on
board.
Table 3: Bill of Materials - Amplier Board
Item Qty Reference Part Description Manufacturer
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 4 C21, C22, C23, C24 Capacitor, 4.7 µF, 10%, 100 V, X7S TDK, CGA4J3X7S2A105K125AE
5 2 D1, D2 Schottky Diode, 30 V Diodes Inc., SDM03U40-7
6 3 J1, J2, J9 Connector 2 pins of Tyco, 4-103185-0
7 6 J3, J4, J5, J6, J7, J8 Connector FCI, 68602-224HLF
8 1 Q1 eGaNIC EPC2105
9 1 R1 Resistor, 10.0 k, 5%, 1/8 W Stackpole, RMCF0603FT10K0
10 2 R2, R15 Resistor, 0 Ω, 1/8W Stackpole, RMCF0603ZT0R00
11 2 R4, R5 Resistor, 47 Ω, 1%, 1/8W Stackpole, RMCF0603FT47R0
12 4 R19, R20, R23, R24 Resistor, 0 Ω, 1/20W Panasonic, ERJ-1GE0R00C
13 2 TP1, TP2 Test Point Keystone Elect, 5015
14 1 TP3 Connector 1/40th of Tyco, 4-103185-0
15 1 U1 I.C., Logic Fairchild, NC7SZ00L6X
16 1 U2 I.C., Gate driver Texas Instruments, LM5113
17 1 U3 I.C., Regulator Microchip, MCP1703T-5002E/MC
18 1 U4 I.C., Logic Fairchild, NC7SZ08L6X
19 0 R14 Optional Resistor
20 0 D3 Optional Diode
21 0 P1, P2 Optional Potentiometer

QUICK START GUIDE Demonstration System EPC9041
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 4
Figure 4: EPC9041 Development Board Schematic
VCC
7 - 12 Vdc
C4
C10
1
2
J1
CON2
R1
10 k
PWM1
GND
A
B
Y
VDD
U1
NC7SZ00L6X
See Table 1
SWOUT
GND
1
TP3
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
TP2
Keystone 5015
1
TP1
Keystone 5015
R2
Zero
R14
Optional
R15
Zero
R5
D2
SDM03U40
R4
47
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
GND
A
B
Y
VDD
U4
NC7SZ08L6X
C9
C22
C23
C21
U2
LM5113TM
C19
C17
100 pF
C16
100pF
D3
Optional
C24
1:4 HB
Q1
R19
Zero
R20
Zero
R23
Zero
R24
Zero
47
1 µf, 25 V
1 µf, 25 V
1 µf, 25 V
0.1 µf, 25 V
0.1 µf, 25 V
1 µf, 100 V

Demonstration Board Notication
The EPC9041 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 certied 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. Ecient 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 [e-mail]
or your local sales representative
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