KP1079XWPA

Rectifier Bridge Integrated and Non-isolated Quasi-Resonant Buck LED Power Switch

KP1079XWPA is a highly integrated power switch with Quasi-Resonant Buck (QR-Buck) constant current (CC) control for LED lighting applications without auxiliary winding.

KP1079XWPA combines a 500V power MOSFET, 600V FRD, 800V Rectifier Bridge and high voltage startup/IC supply circuit in one chip which reduced system design cost. The IC also adopts high accuracy current sensing control method which maintains accurate output current and good line/load regulation.

KP1079XWPA integrates functions and protections of Current Limit and Leading-Edge Blanking, Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), Thermal Fold back (OTP), Output Over Voltage Protection (OVP), LED Short /Open Protection, etc.

Features

•  Integrated with 500V MOSFET

•  Integrated with 600V FRD

•  Integrated with 800V Rectifier Bridge

•  Integrated HV VDD Power Supply Circuit

•  No VDD Cap Design

•  ±5% CC Regulation

•  Quasi-Resonant for High Efficiency

•  Very Low HVDD Operation Current

•  Built-in AC Line CC Compensation

•  Build in Protections:

•  Cycle-by-Cycle Current Limiting

•  Output Over Voltage Protection (OVP)

•  Leading Edge Blanking (LEB)

•  LED Short/Open Protection

•  On-Chip Thermal Fold-back (OTP)

•  Available with ASOP-7 Package

Applications

•  LED Lighting

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