EVLSRK1000A-PF

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SRK1000A adaptive synchronous rectification controller for flyback converter demonstration board with logic level SR MOSFET

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Product overview

Description

The EVLSRK1000A-PF is a demonstration board, designed for evaluation of the SRK1000A synchronous rectification controller.

The SRK1000A implements a control scheme specific for secondary-side synchronous rectification in flyback converters and provides high-current gate-drive outputs for driving N-channel power MOSFET.

The device can operate both in quasi-resonant applications and in fixed frequency (FF) mixed DCM-CCM applications. The board is provided with a setting suitable for QR applications. To use in FF applications, a 100 pF capacitor needs to be added in C4. A 68 kΩ resistor (R5) is provided on the TON pin that fixes the blanking after the turn-on to about 0.8 μs.

The board includes the SR MOSFET (PowerFLAT 5 x 6 package) and can be easily implemented into an existing converter to substitute rectifier diodes.

  • All features

    • Synchronous rectifier for flyback converter, with fixed turn-on and adaptive turn-off
    • VCC range: 3.5 V to 32 V
    • DVS max. operating voltage 90 V
    • Max. frequency: 500 kHz
    • Internal gate-drive for N-channel MOSFET
    • SR MOSFET type: FDMS86103L logic level (100 V - 12 mΩ) PowerFLAT 5 x 6 package

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
EVLSRK1000A-PF
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CARD Industrial Ecopack1 -

EVLSRK1000A-PF

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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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