STEVAL-ILL027V1: 350mA @ 54V Max, 120Vin

Summary

In this application note, a non-isolated, soft-switched, single stage high power factor offline LED driver is introduced. The buck-boost converter is chosen for this application due to its simplicity and low cost.

The converter operates with constant peak current for constant power control, and in transition mode (boundary mode between CCM and DCM) to achieve soft switching, using the L6562A controller. High power factor is achieved by reshaping the peak current near the zero crossing of the input AC line.

Specifications

Manufacturer STMicroelectronics
Category Lighting
Sub-Category LED Drivers - AC / Offline
Eval Board Board not Stocked
AC Voltage 115 V
Outputs and Type 1 Non-Isolated
Current Out 350 mA
Voltage Out (Max) 54 V
Efficiency @ Conditions >87%, 120V in, 18 LEDs @ 350 mA
Features Open Circuit Protection
Over Voltage Protection
PFC
Short Circuit Protection
Under Voltage Protection, Brown-Out
Switching Frequency 200 kHz
Component Count + Extras 26 + 0
Design Author STMicroelectronics
Application / Target Market Lighting: LED Home Lighting
Lighting: LED Signage
Voltage In 108 ~ 132 VAC
Power Factor
Standard(s)
Main I.C. Base Part L6562A
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

STEVAL-ILL027V1 - User Guide STEVAL-ILL027V1 - Data Brief * L6562A - Datasheet

Media

STEVAL_ILL027V1_Schematic.JPG STEVAL_ILL027V1_Board.JPG