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EPC9137 1.5 kW Power Module
DESCRIPTION
The EPC9137 evaluation power module is designed for 48 V to/from 12 V DC-to-DC applications.
It features the EPC2206 – enhancement mode eGaN® eld eect transistors (FETs) with
AEC-Q101 qualication. The EPC9137 is controlled using the EPC9528 controller module that
includes the Microchip dsPIC33CK256MP503 16-bit digital controller. Other features include:
• High eciency: >95.7% @ 12 V/125 A output (buck)
>95.2% @ 48 V/29 A output (boost)
• Preset switching frequency: 250 kHz
• Re-programmable – Average current mode control (default)
• Fault protection:
o Input undervoltage
o Input overvoltage
o Regulation error
o Input undervoltage
o Inductor overcurrent
o Overtemperature
REGULATORY INFORMATION
This power module is for evaluation purposes only. It is not a full-featured power module
and cannot be used in nal products. No EMI test was conducted. It is not FCC approved.
FIRMWARE UPDATES
The EPC9528 module is programmed as a Buck converter by default. To change to Boost
converter, please re-program the module with the boost rmware
available at the EPC
website
. Using the incorrect rmware could result in damage.
Every eort has been made to ensure all control features function as specied. It may be
necessary to provide updates to the rmware. Please check the EPC and Microchip websites
for the latest rmware updates.
EPC9137 top view
EPC9137 bottom view
Table 1: Absolute Maximum Ratings
Symbol Parameter Conditions Min Max Units
V
IN
Input voltage
Buck
64
V
Boost 17
I
OUT
Output current
Buck
(1)
125
A
Boost
(1)
29
T
C, MAX
Measured at heatsink base 95 °C
Table 2: Electrical Characteristics
Symbol Parameter Conditions Min Typ Max Units
V
IN
Input voltage
Buck 20 48 60
V
Boost, during operation 11.3 12 16
Boost, start up 12.3
V
IN,on
Input UVLO turn on voltage
Buck 20
Boost 12.3
V
IN,o
Input UVLO turn o voltage
Buck 17.5
Boost 11.3
V
OUT
Output Voltage
Buck 5 12 16
Boost 20 48 50
t
OUT,rise
Output voltage rise time 100 ms
ΔV
OUT
Output voltage ripple
Buck, I
OUT
= 30 A 80
mV
Boost -
I
OUT
Output Current
Buck 0 125
A
Boost 0 29
I
MAX
Maximum current limit threshold
Buck, output current 130 145
Boost, input current 130 145
T
MAX
Maximum temperature limit threshold During operation 93 98
°C
T
Start, MAX
Maximum temperature to start converter Before startup, after over-temperature fault event 80
f
sw
Switching frequency 250 kHz
(1)
with 1700 LFM airow