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PM8804-Based 100W 5V/20A Active Clamp Forward Converter for Telecom Systems

STEVAL-ISA204V1

Overview

The STEVAL-ISA204V1 evaluation board is designed to demonstrate high efficiency DC-DC conversion, able to output 100 W (5 V/20 A) from 42 to 56 V DC input, which is especially suitable for telecom applications.

The power conversion stage is based on an active clamp forward topology managed by a PM8804 PWM controller featuring all the integrated circuitry necessary for a compact and efficient 48 V converter. The highly configurable controller includes a programmable oscillator for switching frequency regulation up to 1 Mhz, adjustable slope compensation, dual complementary low-side drivers with programmable dead time, programmable soft start, soft turn off and a programmable current sense blanking time.

Main features

DC-DC forward converter based on PM8804
Input voltage range: 42 – 56 V_DC
Switching frequency: 250 kHz
Output:
- Power: 100 W
- Voltage: 5 V_DC
- Current: up to 20 A
Peak efficiency > 94%
Open circuit protection
RoHS complaint
WEEE compliant

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-08 00:47:47

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