Features

•

DC-DC flyback converter based on:

–

PM8804 PWM peak current mode controller, and

–

SRK1000 adaptive synchronous rectification controller

•

•

Switching frequency: 200 kHz

•

Output:

–

Power: 60 W

–

–

Current: 5 A

•

Peak efficiency > 92%

•

RoHS compliant

Description

STEVAL-ISA203V1 evaluation board is designed to demonstrate high efficiency DC-

which is especially suitable for telecom applications.

The power conversion stage is based on a flyback topology managed by the PM8804

controller, which features 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.

The secondary side employs the SRK1000 adaptive synchronous rectification

controller for flyback converters.

Product summary

48 V flyback converter

12 V – 5 A based on

PM8804

STEVAL-

ISA203V1

PWM peak current

mode controller for PoE

and telecom systems

PM8804

Adaptive synchronous

rectification controller

for flyback converter

SRK1000

N-channel 80 V, 3.0 mΩ

typ., 120 A STripFET F7

Power MOSFET in

PowerFLAT 5x6

package

STL130N8F7

Application

Server &

Telecom Power

48 V flyback converter 12 V – 5 A based on PM8804

STEVAL-ISA203V1

Data brief

DB4096 - Rev 1 - February 2020

For further information contact your local STMicroelectronics sales office.

www.st.com