QUICK START GUIDE
EPC – THE LEADER IN GaN TECHNOLOGY |
| COPYRIGHT 2019 | | 3
EPC9060/61
Figure 2: Proper Connection and Measurement Setup
Figure 3: Proper Measurement of Switch Node – OUT
Place probe tip in large via at OUT
Ground probe
against TP3
Minimize loop
Do not use probe ground lead
QUICK START PROCEDURE
The development boards are easy to set up to evaluate the performance
of the eGaN FET. Refer to figure 2 for proper connect and measurement
setup and follow the procedure below:
1. With power off, connect the input power supply bus to +V
IN
(J5, J6) and ground / return to –V
IN
(J7, J8).
2. With power off, connect the switch node of the half-bridge OUT
(J3, J4) to your circuit as required.
3. With power off, connect the gate drive input to +V
DD
(J1, Pin-1)
and ground return to –V
DD
(J1, Pin-2).
4. With power off, 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 on V
OUT
as indicated in the table be-
low:
a. EPC9060, 40 V
b. EPC9061, 60 V
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, efficiency 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 oscil-
loscope 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.
(For Efficiency
Measurement)
Gate Drive Supply
(Note Polarity)
+
7 V – 12 V
+
_
PWM Input
+
V
DD
Supply
V
IN
Supply
V
IN
(For Efficiency
Measurement)
Pads for Buck
Output Filter
V
OUT
V
SW
P
GND
+
V
OUT
V
A
I
IN
_
_
_
V
See table
for max