EVL6591-90WADP: 90W, 12V @ 7.5A, 88 ~ 264Vin

Summary

This document describes the characteristics and performance of a 90 W wide range input AC-DC adapter based on asymmetrical half-bridge topology (AHB).

The converter comprises a two-stage approach: a PFC front-end stage using the L6563 TM PFC controller and a DC-DC stage that implements the asymmetrical half-bridge (AHB) topology driven by the L6591, the new PWM controller dedicated to this architecture.

Thanks to the AHB topology, the system offers good electrical performance (EPA 2.0 compliant) with a low-voltage and high-current output (12 V - 7.5 A).

The order code for this demonstration board is EVL6591-90WADP.

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	497-8335-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Board not Stocked
AC Voltage	115 V 230 V Universal (115 / 230V)
Outputs and Type	1 Isolated
Voltage Out	12 V
Current Out	7.5 A
Output Power	90 W
Features	Light Load Mode Over Current Protection PFC Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>84%, 230V in, 12V @ 1.9 ~ 7.5 A >84%, 115V in, 12V @ 1.9 ~ 7.5 A
No-load Input Power @ Voltage	225 mW @ 115 V 290 mW @ 230 V
Switching Frequency	100 kHz
Internal Switch	No
Component Count + Extras	123 + 2
Voltage In	88 ~ 264 VAC
Design Author	STMicroelectronics
Application / Target Market	Power: AC Adapters
Main I.C. Base Part	L6563 L6591
Date Created By Author
Date Added To Library	2011-03