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  • SC3520SBER

  • SC3520SBER

    SC3520 is a smart secondary-side driver IC designed to
    drive N-Channel power MOSFET used as synchronous
    rectifiers in isolated flyback converters. The MOSFET can
    replace Schottky diode so the system can achieve higher
    efficiency and superior heat dissipation performance.
    The SR MOSFET is turned on when VDS falls below turn-on
    threshold, and turned off when VDS exceeds turn-off
    threshold. The SR conduction voltage drop is continuously
    monitored to minimize the conduction loss. The extremely
    fast turn-off comparator and driving circuitry ensures the
    safety of the SR MOSFET, even in current continuous mode
    (CCM) condition.
    The IC can work well in wide output voltage range, even in
    short circuit conditions. The patented turn on detection
    circuity prevents SR turn on when Vds rings severely. The
    wide VDD range and gate driver technology make the
    controller ideal for wide output voltage range applications,
    such as adapters, chargers, USB Power Delivery (USB-PD),
    etc.
    This chip supports both high side rectification and low side
    rectification.  

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商品描述

SC3520 is a smart secondary-side driver IC designed to
drive N-Channel power MOSFET used as synchronous
rectifiers in isolated flyback converters. The MOSFET can
replace Schottky diode so the system can achieve higher
efficiency and superior heat dissipation performance.
The SR MOSFET is turned on when VDS falls below turn-on
threshold, and turned off when VDS exceeds turn-off
threshold. The SR conduction voltage drop is continuously
monitored to minimize the conduction loss. The extremely
fast turn-off comparator and driving circuitry ensures the
safety of the SR MOSFET, even in current continuous mode
(CCM) condition.
The IC can work well in wide output voltage range, even in
short circuit conditions. The patented turn on detection
circuity prevents SR turn on when Vds rings severely. The
wide VDD range and gate driver technology make the
controller ideal for wide output voltage range applications,
such as adapters, chargers, USB Power Delivery (USB-PD),
etc.
This chip supports both high side rectification and low side
rectification.  

Wide output range, even down to 0V. No need of auxiliary winding for power supply. Patented programmable turn on detection circuitry prevents MOSFET from mistake turn-on. Compliant with multiple types of MOSFETs High efficiency can meet CoC V5 and DoE VI. 10nS turn off propagation delay High switching frequency up to 1MHz. Extremely low quiescent current leads to low stand by power. Supports DCM, CCM, and Quasi-Resonant mode converters. Supports both high and low side synchronous rectification. SOT23-6 package available.