1

FEATURES

DESCRIPTION

APPLICATIONS

TYPICAL APPLICATION DIAGRAM

OC

RT

DT

SS

VCC

GND

GD1

GD2

Vs

3

4

1

2

5

6

7

8

UCC25600

*

*

*

UCC25600

8-Pin High-Performance Resonant Mode Controller

• Variable Switching Frequency Control

• Programmable Minimum Switching Frequency

The UCC25600 high performance resonant mode

controller

is

designed

for

dc-to-dc

applications

With 4% Accuracy (3% accuracy at

utilizing resonant topologies, especially the LLC half

temperature range: -20°C to 105°C)

bridge resonant converter. This highly integrated

• Programmable Maximum Switching Frequency

controller implements frequency modulation control

• Programmable Dead Time for Best Efficiency

and complete system functions in only an 8-pin

package. Switching to the UCC25600 will greatly

• Programmable Soft-Start Time

simplify the system design, layout and improve time

• Easy ON/OFF Control

to market, all at a price point lower than competitive

• Over-Current Protection

16-pin device offerings.

• Over-Temperature Protection

The

internal

oscillator

supports

the

switching

• Bias Voltage UVLO and OVP

frequencies from 30 kHz to 350 kHz. This high

accuracy oscillator realizes the minimum switching

• Integrated Gate Driver With 0.4-A Source and

frequency limiting with 4% tolerance, allowing the

0.8-A Sink Capability

designer to avoid "over design" of the power stage

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

and, thus, further reducing overall system cost. The

• SOIC 8-Pin Package

programmable

dead

time

enables

zero-voltage

switching with minimum magnetizing current. This will

maximize system efficiency across a variety of

applications.

The

programmable

soft-start

timer

• 100-W to 1-kW Power Supplies

maximizes design flexibility demanded by the varied

• LCD, Plasma and DLP TVs

requirements of end equipments utilizing a half bridge

• Adaptors, Computing and ATX Power Supplies

topology. By incorporating 0.4-A source and 0.8-A

• Home Audio Systems

sink driving capability, a low cost, reliable gate driver

transformer is a real option.

• Electronic Lighting Ballasts

The UCC25600 delivers complete system protection

functions including over current, UVLO, bias supply

OVP and over temperature protection.

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 © 2008–2009, 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.