Datasheet

UCC28063

SLUSAO7 – SEPTEMBER 2011

www.ti.com

CONTENTS

• Electrical Characteristics 5

• Device Information 9

• Functional Block Diagram 12

• Typical Characteristics 13

• Application Information 19

• Design Example 33

• Additional References 41

DESCRIPTION

Optimized for consumer applications concerned with audible noise elimination, this solution extends the

advantages of transition mode – high efficiency with low-cost components – to higher power ratings than

previously possible. By utilizing a Natural Interleaving™ technique, both channels operate as masters (that is,

there is no slave channel) synchronized to the same frequency. This approach delivers inherently strong

matching, faster responses, and ensures that each channel operates in transition mode.

Expanded system level protections feature input brownout and dropout recovery, output over-voltage, open-loop,

overload, soft-start, phase-fail detection, and thermal shutdown. The additional FailSafe over-voltage protection

(OVP) feature protects against shorts to an intermediate voltage that, if undetected, could lead to catastrophic

device failure. Advanced non-linear gain results in rapid, yet smoother response to line and load transient events.

Reduced bias currents improve stand-by power efficiency. Special line-dropout handling avoids significant current

disruption and minimizes audible-noise generation.

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

(1)

PART NUMBER PACKAGE

(2)

OPERATING TEMPERATURE RANGE, T

UCC28063D SOIC 16-Pin (D) -40°C to +125°C

(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) SOIC (D) package is available taped and reeled by adding R to the above part number. Reeled quantities for UCC28063DR are 2,500

devices per reel.

Product Folder Link(s): UCC28063