SRK1000A Overview
SRK1000 / SRK1000A /SRK1000B are controllers intended for secondary side synchronous rectification (SR) in flyback converters, suitable for operation in QR and mixed CCM/DCM fixed frequency circuits. They provide a high-current gate-drive output, capable of driving N-channel Power MOSFETs. The control scheme of this IC is such that the SR MOSFET is switched on as soon as current starts flowing through its body diode...
SRK1000A Key Features
- Secondary side synchronous rectification controller optimized for flyback converter
- Suitable for QR and mixed CCM/DCM fixed frequency operation
- Wide Vcc operating voltage range 3.75 to 32 V
- CC regulation operation down to 2 V output supported
- Very low quiescent current in low consumption mode (160 μA)
- High-voltage sensing input for SR MOSFET drain-source voltage (100 V AMR)
- Operating frequency up to 300 kHz
- High-current gate-drive output for N-MOSFET
- Fast turn-on with minimum delay time and adaptive turn-off logic
- Programmable min. TON and fixed min. TOFF (3 options: SRK1000, SRK1000A