LCD TVs

LCD TVs

Power Integrations provides AC-DC converter ICs and power factor correction devices optimized for tiny personal TVs to the largest and most advanced 4K sets. Characterized by the highest level of integration available, small PCB footprint and low headroom requirements, PI’s products are selected by designers for challenging thin profile TVs, high-reliability professional signage and display units and for highly cost-competitive variants with integrated power/scalar motherboards.


Figure 1: PI Circuit Elements for an LED-Backlit LCD-TV Power Architecture (see RDK-189 and DER-112)

Design Examples

Document DescriptionDesign
Ideas
Design
Example
Reports
Engineering
Prototype
Reports
Reference
Design
Kits
125 W dual output LLC stage design for 50" TV   
<5 mW No-Load Input Power, 8 W Standby Power Supply   
100 W, Low Profile (11 mm), Flyback DC-DC Converter   
125 W LLC DC-DC Resonant Converter   
100 W, Low Profile (11 mm), LLC DC-DC Converter   
High Performance, Low Profile 900 W PFC Front End DER-274  
High Performance, Low Profile 100 W PFC Front End DER-272  
Low-Power, Low-Cost 180 W PFC Front End  RDR-248RDK-248
14.5 W Standby and 300 W Main Power Supply  RDR-249RDK-249
High Performance 347 W PFC Frontend  RDR-236RDK-236
LCD Main Power Supply  downloadRDK-189
LCD TV Standby Power Supply with No-load Power Consumption of Less Than 25 mW download  
LED backlight constant current drivers, 20/30W DC-DC Boost converter using DPA-Switch download  
Standby power supply using TOPSwitch-JX download  

Recommended Product Families

IC Product
Family
Design GuidesTypical Circuit
Configuration
Power/Current
Ratings
Description
LinkZero™-LPNAFlyback3 WZero No-Load Consumption Integrated Off-Line Switcher
HiperLCS™Product family application note.LLC Half-bridgeUp to 440 WIntegrated LLC power stage incorporating a multi-function controller, high-side and low-side gate drivers, plus two power MOSFETs in a half-bridge configuration
HiperTFS™-2NATwo-Switch Forward & FlybackUp to 586 WCombined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs
HiperPFS™-2NABoost PFC110 to 425 WHigh Power PFC Controller with Integrated High-Voltage MOSFET
HiperPFS™-3NABoost PFC110 to 1000 WHigh Power PFC Controller with Integrated High-Voltage MOSFET
HiperPFS™-4NABoost PFC110 to 610 WPFC Controller with Integrated 600 V MOSFET
SENZero™NAAC Power SupplyNASimple-to-use device that eliminates significant standby losses by disconnecting unused circuit paths during power-saving modes
CAPZero™-2Product family application note.AC Power SupplyNAEasy to use device for reducing standby mode power by eliminating power losses from X capacitor discharge resistors
HiperPLCProduct family application note.PFC+LLC Half Bridge150W to 400WCombination of continuous Conduction Mode PFC controller with high efficiency LLC half bridge Controller and driver
TOPSwitch™-JXProduct family application note.Flyback12 W to 177 WIntegrated Off-Line Switcher with EcoSmart™ Technology for Highly Efficient Power Supplies
TinySwitch™-IIINAFlyback6 W to 36.5 WHighly energy efficient offline switcher IC utilizing on-off control for high efficiency at all load conditions. No-load consumption less than 50 mW. Ideal for TV standby supply.

Related Design Support Documents

General Design Information
Product Datasheets
Active Power Factor Correction – Basics
High Power Selector Guide
AC-DC Selector Guide
Package Information

 

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