KP1059AWPA

High Integration and High Efficiency Buck LED Power Switch

KP1059AWPA is a highly integrated power switch with Quasi-Resonant Buck (QR-Buck) constant current (CC) control for LED lighting applications.

KP1059AWPA combines a 500V power MOSFET, 600V FRD, 800V Rectifier Bridge and a power controller in one chip. The IC also integrates high voltage LDO supply circuit without VDD Cap and a novel transformer demagnetization circuit, which eliminates transformer auxiliary winding. The IC adopts Quasi-Resonant control for high efficiency.

KP1059AWPA integrates functions and protections of Current Limit and Leading Edge Blanking, Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), Thermal Foldback (OTP), LED Short Protection, etc.

Features

•  Integrated with 500V MOSFET

•  Integrated with 600V FRD

•  Integrated with 800V Rectifier Bridge

•  Integrated HV LDO

•  No VDD Cap and Single Winding Inductor Design

•  Quasi-Resonant for High Efficiency

•  ±4% CC Regulation

•  Very Low HVDD Operation Current

•  Built-in AC Line CC Compensation

•  Build in Protections:

•  LED Short Protection

•  On-Chip Thermal Fold-back (OTP)

•  Cycle-by-Cycle Current Limiting

•  Leading Edge Blanking (LEB)

•  HVDD UVLO

•  Available with ASOP-7 Package

 Applications

•  LED Lighting