STSR30

更新时间： 2024-01-31 20:17:31

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动
页数	文件大小	规格书
10页	201K
描述
SYNCHRONOUS RECTIFIER SMART DRIVER FOR FLYBACK

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中文翻译

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数据手册

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STSR30 数据手册

STSR30

SYNCHRONOUS RECTIFIER

SMART DRIVER FOR FLYBACK

■

SUPPLY VOLTAGE RANGE: 4V TO 5.5V

TYPICAL PEAK OUTPUT CURRENT:

(SOURCE-SINK: 1.5A)

■

OPERATING FREQUENCY: 20 TO 500 KHz

INHIBIT BLANKING TIME: 700 ns

AUTOMATIC TURN OFF FOR DUTY-CYCLE

LESS THAN 14%

■

POSSIBILITY TO OPERATE IN

DISCONTINUOUS MODE

SO-8

switch providing anticipation in turn-off the output.

This smart function is implemented by a fast

cycle-after-cycle logic control mechanism, based

on a high frequency oscillator synchronized by the

clock signal. This anticipation is externally set

through external component. A special Inhibit

function, detecting the voltage across the

Synchronous FET, allows to shut-off the drive

output during discontinuous mode condition. A

Disable pin allows turning off the device during

no-load condition reducing overall current

consumption.

DESCRIPTION

STSR30 Smart Driver IC provides a high current

outputs to properly drive secondary Power

Mosfets used as Synchronous Rectifier in low

output

voltage,

high

efficiency

Flyback

Converters. From a synchronizing clock input,

withdrawn on the secondary side of the isolation

transformer, the IC generates a driving signal with

set dead times with respect to the primary side

PWM signal.

The IC operation prevents secondary side

shoot-through conditions at turn-on of the primary

BLOCK DIAGRAM

January 2004

1/10

12 3 4 5 6 7...10

中文翻译

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