STSR30:SYNCHRONOUS RECTIFIERS SMART DRIVERS FOR ADAPTOR FLYBACK

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 From a synchronizing clock input, withdrawn on the secondary side of the isolation transformer, the IC generates a driving signal with set dead times with respect to the primary side PWM signal.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.

Key Features

  • POSSIBILITY TO OPERATE IN DISCONTINUOUS MODE
  • SUPPLY VOLTAGE RANGE: 4V TO 5.5V
  • OPERATING FREQUENCY: 20 TO 500 KHz
  • TYPICAL PEAK OUTPUT CURRENT: (SOURCE-SINK: 1.5A)
  • AUTOMATIC TURN OFF FOR DUTY-CYCLE LESS THAN 14%
  • INHIBIT BLANKING TIME: 700 ns
Product Specifications
DescriptionVersionSize
DS3513: Synchronous rectifier smart driver for flyback2.3200 KB
Application Notes
DescriptionVersionSize
AN2432: EVALSTSR30-60W: 60W AC-DC adapter with synchronous rectification using L6668 and STSR302.2630 KB
Presentations
DescriptionVersionSize
Secondary regulation Synchronous rectification controllers2 MB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STSR30D-TRSO-8Tape And Reel--NECEAR99CHINA
STSR30DSO-8Tube--NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STSR30D-TRSO-8IndustrialEcopack2 (**)md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_kmo7-wspc-uw35aa6.pdf
md_o7-wspc-so-wspc-08-wspc-.xml
STSR30DSO-8IndustrialEcopack2 (**)md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_kmo7-wspc-uw35aa6.pdf
md_o7-wspc-so-wspc-08-wspc-.xml
Synchronous rectifier smart driver for flyback STSR30
circuit_diagram_9833_thumbnail.png STSR30
EVALSTSR30-60W: 60W AC-DC adapter with synchronous rectification using L6668 and STSR30 STSR30
Secondary-side rectification for an LLC resonant converter featuring the SRK2000 SRK2000
Very low drop voltage regulators with inhibit KFXX
md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_kmo7-wspc-uw35aa6.pdf STSR30
md_o7-wspc-so-wspc-08-wspc-.xml TS4871