UDG-10043

2

1

4

7

8

6

5

VCC

GD1

GND

GD2

RT

DT

SS

TPS92020

Bias

1

2

3

4

8

7

6

5

VDD

GDRV

GND

TZE

VSENSE

EAOUT

VINS

ISENSE

UCC28810

3

OC

TPS92020

www.ti.com

SLUSA54 – JULY 2010

Resonant-Switching Driver Controller for LED Lighting

Check for Samples: TPS92020

1

FEATURES

DESCRIPTION

•

LLC Resonant Switching Driver Controller for

Multi-String LED Lighting Applications

The TPS92020 is a high-performance resonant-

switching LED driver controller. It is designed for use

•

Half-Bridge Topology

in higher power LED lighting systems. The TPS92020

•

Fixed or Variable Switching Frequency Control

uses resonant switching in an LLC topology to

•

Programmable Soft-Start Time

achieve a very high efficiency compared to traditional

•

Programmable Dead Time for Best Efficiency

half-bridge converters.

•

Easy ON/OFF Control

The programmable dead time enables zero-voltage

switching

with

minimum

magnetizing

current,

•

Overcurrent Protection

maximizing system efficiency across a variety of

•

Over-Temperature Protection

applications.

•

Bias Voltage UVLO and OVP

The

TPS92020

can

operate

in

two

switching

•

Integrated Gate Driver With 0.4-A Source and

frequency modes. Fixed frequency allows for simple

0.8-A Sink Capability

design when the load current is constant while

•

Operating Temperature Range: –40°C to 125°C

variable switching allows for optimal closed-loop

control for loads with varying currents. The internal

•

SOIC 8-Pin Package

oscillator supports the switching frequencies from 30

kHz to 350 kHz. This high-accuracy oscillator realizes

APPLICATIONS

the minimum switching frequency limiting with 4%

•

Commercial / Industrial LED Lighting Drivers

tolerance, allowing the designer to avoid over-design

•

High Bay LED Lighting

of the power stage and, thus, further reducing overall

•

Low Bay LED Lighting

system cost.

•

Street LED Lighting

•

Area LED Lighting

•

Stadium LED Lighting

•

LED Wall Washing

•

LED DTV and Monitor Back-lighting

•

Electronic Lighting Ballasts

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.