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

Eval Board

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Support Documents & Media

EVL6591-90WADP - User Guide - AN2852 L6591 - Datasheet

Media

EVL6591_90WADP_Schematic.JPG EVL6591_90WADP_Board.jpg