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UCC25600

SLUS846C – SEPTEMBER 2008 – REVISED JUNE 2015

UCC25600 8-Pin High-Performance Resonant Mode Controller

1 Features

3 Description

The UCC25600 high performance, resonant mode

1

•

Variable Switching Frequency Control

controller is designed for dc-to-dc applications using

•

Programmable Minimum Switching Frequency

resonant topologies, especially the LLC half-bridge

With 4% Accuracy (3% Accuracy at Temperature

resonant converter. This highly integrated controller

Range: –20°C to 105°C)

implements

frequency

modulation

control

and

complete system functions in only an 8-pin package.

•

Programmable Maximum Switching Frequency

Switching to the UCC25600 will greatly simplify the

•

Programmable Dead Time for Best Efficiency

system design and layout, and improve time to

•

Programmable Soft-Start Time

market, all at a price point lower than competitive 16-

•

Easy ON and OFF Control

pin device offerings.

•

Overcurrent Protection

The

internal

oscillator

supports

the

switching

•

Overtemperature Protection

frequencies from 40 kHz to 350 kHz. This high-

accuracy oscillator realizes the minimum switching

•

Bias Voltage UVLO and Overvoltage Protection

frequency limiting with 4% tolerance, allowing the

•

Integrated Gate Driver With 0.4-A Source and 0.8-

designer to avoid over-design of the power stage

A Sink Capability

and, thus, further reducing overall system cost. The

•

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

programmable

dead

time

enables

zero-voltage

switching with minimum magnetizing current. This

•

SOIC 8-Pin Package

maximizes system efficiency across a variety of

applications.

The

programmable

soft-start

timer

2 Applications

maximizes design flexibility demanded by the varied

•

100-W to 1-kW Power Supplies

requirements of end equipment using a half-bridge

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

•

sink driving capability, a low cost, reliable gate driver

•

Adaptors, Computing, and ATX Power Supplies

transformer is a real option.

•

Home Audio Systems

The UCC25600 delivers complete system protection

•

Electronic Lighting Ballasts

functions including overcurrent, UVLO, bias supply

OVP, and overtemperature protection.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

UCC25600

SOIC (8)

3.91 mm × 4.90 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.