RDK-189: 40" LCD TV: 225W: 24V, 12V, 5V, and 5V

Summary

This engineering report describes a 225 W (286 W Peak) reference design power supply for flat panel displays (LCD TVs) and also serves as a general purpose evaluation board for the PLC810PG.

The design is based on the PLC810PG controller IC which integrates both continuous current mode (CCM) boost PFC and resonant half-bridge (LLC) control functions together with a high-side driver for the upper MOSFET of the LLC stage and a low-side LLC driver.

RD189 demonstrates a design using the commonly employed single transformer and resonant inductor magnetic component (integrated magnetics) for the LLC stage (common in display applications). However, the PLC810 may as easily be used with separated transformer and resonating inductor. PI design materials support both approaches.

Specifications

Manufacturer	Power Integrations
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Multi Output
Eval Board Part Number	596-1265-ND
Eval Board Supplier	Power Integrations
Eval Board	Board not Stocked
AC Voltage	115 V 230 V Universal (115 / 230V)
Outputs and Type	4 Isolated
Voltage Out: Highest Current First	24V, 12V, 5V, 5V
Current Out	7A per Channel
Output Power	225 W
Efficiency @ Conditions	>83%, 230V in @ 20% ~ 100% >82%, 115V in @ 20% ~ 100%
No-load Input Power @ Voltage	80 mW @ 115 V 200 mW @ 230 V
Features	PFC Under Voltage Protection, Brown-Out
Switching Frequency	66 kHz
Internal Switch	Yes
Component Count + Extras	191 + 122
Voltage In	90 ~ 265 VAC
Application / Target Market	LCD TV / Monitor
Design Author	Power Integrations
Main I.C. Base Part	PLC810
Date Created By Author
Date Added To Library	2011-03