Date:10th June 2012
EPC introduce eighth brick DC-DC converter
demo using eGaN FETs
Efficient Power Conversion Corporation (EPC) has introduced
the EPC9102, a fully functional eighth brick converter.
This board is a 36 V - 60 V input to 12 V output, 375 kHz
phase-shifted full bridge (PSFB) eighth brick converter
with 17 A maximum output current. The EPC9102 uses the 100
V EPC2001 eGaN FETs in conjunction with the recently introduced
LM5113 100V half-bridge gate driver from Texas Instruments.
The LM5113 is said to be the industry's first driver to
optimally drive and fully release the benefits of enhancement
mode gallium nitride FETs. The EPC9102 demonstrates the
performance capabilities of high switching frequency eGaN
FETs when coupled with this eGaN driver.
The whole converter is constructed within the standard
eighth brick footprint and height (2.300" x 0.900"
x 0.400") requirements. Despite its small size, the
board has a peak power efficiency of 94.8% while delivering
10 amps of current with a 36 V input.
The EPC9102 demonstration circuit was designed to showcase
the size and performance that can readily be achieved at
375 kHz operation using eGaN FETs rather than to optimize
the design for maximum output power. The operating frequency
is roughly 50% - 100% higher than similar commercial eighth
brick DC-DC power converters.
To assist the power system design engineer, the EPC9102
demonstration board is oversized to allow connections for
bench evaluation. There are various probe points to facilitate
simple waveform measurements and efficiency calculation.
The board is intended for bench evaluation with low ambient
temperature and forced air cooling.
A Quick Start Guide, http://epc-co.com/epc/documents/guides/EPC9102_qsg.pdf,
is included with the EPC9102 demo board for reference and
ease of use.