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STSR30D-TR

型号：STSR30D-TR
品牌：ST

批号：13+RoHS
封装：SOP-8
原价：15
数量：21200
PDF电子文档：

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备注：专业分销ST New and original in stock

详细描述

STSR30D-TR

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

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withdrawn on the secondary side of the isolation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

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

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