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Application overview

The STEVAL-ISA203V1 represents a compact and efficient continuous conduction mode flyback converter design

with synchronous rectification from 48 V input power, especially suitable for server and telecommunications

equipment. The board can supply an output voltage 12 V and load current up to 5 A.

The PM8804 PWM peak current mode controller integrates two MOSFET drivers with up to 1 A peak sink current

capability. The GAT1 signal drives the main switching MOSFET, while the GAT2 signal is capable of controlling a

P-channel MOSFET referred to PGND in active clamp flyback topology.

The SRK1000 flyback synchronous rectification controller takes body diode sensing feedback from the

STL130N8F7 secondary MOSFET.

STEVAL-ISA203V1

Application overview

DB4096 - Rev 1

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