Datasheet > UCC28089_12

UCC28089_12

更新时间： 2024-11-28 12:02:03

品牌	Logo	应用领域
德州仪器 - TI		振荡器
页数	文件大小	规格书
23页	714K
描述
PRIMARY-SIDE PUSH-PULL OSCILLATOR WITH DEAD-TIME CONTROL

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UCC28089_12 数据手册

UCC28089

SLUS623A -- SEPTEMBER 2004 -- REVISED AUGUST 2006

PRIMARY-SIDE PUSH-PULL OSCILLATOR

WITH DEAD-TIME CONTROL

FEATURES

APPLICATIONS

Push-Pull Oscillator With Programmable

Deadtime

High Efficiency Cascaded Converters

Inverters

High-Current Totem-Pole Dual Output Stage

Drives Push-Pull Configuration with 1-A Sink

and 0.5-A Source Capability

Electronic Ballasts

Uninterruptable Power Supplies (UPS)

AC or DC Links

Can be Used in Push-Pull, Half-Bridge, or

Full-Bridge Topologies

DESCRIPTION

Oscillator Synchronization Output

The UCC28089 is a versatile BiCMOS controller for

dc-to-dc or off-line fixed-frequency switching power

supplies. The UCC28089 has dual alternating output

stages in dual-alternating push-pull configuration. Both

outputs switch at half the oscillator frequency using a

toggle flip-flop and duty cycle is limited to less than 50%.

Low Start-Up Current of 130 μA and 1.4-mA

Typical Run Current

Over-Current Shutdown

Digitally Controlled Over-Current/Retry

Feature

Undervoltage Lockout With Hysteresis

TYPICAL APPLICATION

= 1.2 V

= 48 V

UCC28089

SYNC VDD 8

BIAS

DIS OUTA 7

OUTB 6

GND 5

UCC2540

G1 18

REF

VDD 16

PGND 15

SYNCIN G2 14

UDG-04112

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.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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