KP4111Secondary Side Synchronous Rectifier (SR)
KP4111 is a family of secondary side synchronous rectifier, that replaced Schottky diodes by combined with an ultra low on-state resistance power MOSFET for high-efficiency flyback converters. It supports High-Side and Low-Side in DCM and Quasi-Resonant Topologies.
KP4111 is built-in HV supplies for VDD capacitor, that can eliminate the aux-winding of VDD supply for cost saving.
KP4111 integrates protections of Under Voltage Lockout (UVLO), VDD Clamper.
l Secondary Side Synchronous Rectifier(SR) for Flyback converters
l Supports High-Side and Low-Side in DCM and Quasi-Resonant Topologies
l <300uA Low Quiescent Current
l Built-in HV Supplies without Aux-Winding for VDD supply
l Integrated with 50V Power MOSFET
l Built-in Protections:
n VDD UVLO
n VDD Clamper by >5mA sink current
l Available with SOP-8 Package
l Flyback converters
SOP-8, Halogen free in T&R, 4000Pcs/Reel