2021久久天天躁狠狠躁夜夜

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      KP2120

      Multi-Mode Primary Side Regulation (PSR)/QR-Buck CV/CC Power Switch
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      General Description

      KP2120 is a family of a high performance Primary Side Regulation (PSR) power switch with high precision CV/CC control ideal for charger applications. The IC can also support Quasi-Resonant (QR) Buck CC&CV topology for LED lighting if SEL pin is short to GND.

      In CV mode, KP2120 adopts Multi Mode Control which uses the hybrid of AM (Amplitude Modulation) mode and (Frequency Modulation) FM mode to improve system efficiency and reliability. In CC mode, the IC uses PFM control with line and load CC compensation. The IC can achieve audio noise free operation and optimized dynamic response. The built-in Cable Drop Compensation (CDC) function can provide excellent CV performance.

      KP2120 integrates functions and protections of Under Voltage Lockout (UVLO), VDD over Voltage Protection (VDD OVP), Cycle-by-cycle Current Limiting (OCP), Short Load Protection (SLP), and VDD Clamping.

      Features

      l   Integrated with 650V MOSFET

      l   Support Flyback and Buck Topology:

      n  Flyback PSR Control (SEL= Floating)

      n  QR-Buck Control (SEL= GND)

      l   Multi Mode PSR Control

      l   Audio Noise Free Operation for PSR

      l   Optimized Dynamic Response for PSR

      l   Low Standby Power <70mW

      l   ±4% CC and CV Regulation

      l   Programmable Cable Drop Compensation (CDC) in PSR CV Mode

      l   Built-in AC Line & Load CC Compensation

      l   Build in Protections:

      n  Short Load Protection (SLP)

      n  On-Chip Thermal Shutdown (OTP)

      n  Cycle-by-Cycle Current Limiting

      n  Leading Edge Blanking (LEB)

      n  Pin Floating Protection

      n  VDD UVLO, OVP & Clamp

      l   Available with SOP-8 Package


      Applications

      l   Battery Chargers for Cellular Phones

      l   AC/DC Power Adapter and LED Lightings


      Pin Configuration

      Typical Application Circuit

      • Charger Application
      • Intelligent LED Lighting Application

      Ordering Information

      Part Number

      Description

      KP2120SGA

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


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      2021久久天天躁狠狠躁夜夜