KP4110

Secondary Side Synchronous Rectifier (SR)
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General Description

KP4110 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.

KP4110 is built-in HV supplies for VDD capacitor, that can eliminate the aux-winding of VDD supply for cost saving.

KP4110 integrates protections of Under Voltage Lockout (UVLO), VDD Clamper.


Features

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


Applications

l   Flyback converters

l   Chargers


Pin Configuration

Typical Application Circuit

  • High Side SR
  • Low Side SR

Ordering Information

Part Number

Description

KP4110SGA

SOP-8, Halogen free in T&R, 4000Pcs/Reel


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