Design contains obsolete parts

STEVAL-ISA204V1: 100W, 5V @ 20A, 42 ~ 56VDC

Summary

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.

DC-DC forward converter based on PM8804
Input voltage range: 42 – 56 VDC
Switching frequency: 250 kHz
Voltage: 5 VDC
Current: up to 20 A
Peak efficiency > 94%
Open circuit protection

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	497-19565-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	5 V
Current Out	20 A
Voltage In	42 ~ 56 V
Efficiency @ Conditions	>94%, 48 VDC in @ 32 ~ 70 W >93%, 56 VDC in @ 27 ~ 90 W >92%, 42 VDC in @ 25 ~ 100 W
Voltage Out Range	- Fixed
Features	Open Circuit Protection Over Current Protection Soft Start
Switching Frequency	250 kHz
Standby Current [Typical]	300 µA
Quiescent Current [Typical]	1.2 mA
Component Count + Extras	95 + 27
Internal Switch	No
Design Author	STMicroelectronics
Application / Target Market	PoE, Power Over Ethernet Servers Telecom
Standby Current [Maximum]	500 µA
Quiescent Current [Maximum]	1.5 mA
Main I.C. Base Part	PM8804
Date Created By Author	2019-06
Date Added To Library	2019-10