2021久久天天躁狠狠躁夜夜

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      KP101B

      Enhanced Performance Non-Isolated Buck PFC Controller
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      General Description

      KP101B is a pulse-width modulated (PWM) controller with integrated high side floating gate driver for the application of low to medium power single stage power factor corrected (PFC) LEDs. The devices operate in boundary mode and are suitable for buck topologies. Constant on-time boundary mode control scheme guarantees high power factor and low gate turn-on loss. Build-in gate control limits the switching frequency range from 16 kHz to 125 kHz, solving the audible noise and high switching loss issue inherited from boundary mode operation.

      The devices feature a gate driver, duty cycle limiter, error amplifier, PWM control circuitry and protection functions, as well as the proprietary zero cross detection (ZCD) technique required to implement a boundary mode switch power supply. The accurate output LED current is achieved by an average current feedback loop. The fault protection features include Under Voltage Lockout (UVLO), Over Current Protection (OCP), Over Voltage Protection (OVP) and thermal protection function (OTP). Moreover, for high efficiency, the device features low startup current enabling fast, low loss charging of the VIN capacitor.


      Features

      l   Quasi-Resonant Switching to Achieve >90% Efficiency

      l   Accurate LED Output Current <±1% Control with Universal Input

      l   Fast Start-Up Time <500ms

      l   Proprietary Constant On-time Control for PF>0.97

      l   Proprietary ZCD Method to Save Auxiliary Winding Design

      l   Building-in  Complete Protection:

      n  LED Open and Short Protection

      n  Cycle-by-cycle Over Current Protection

      n  OVP for IC Bias Voltage

      n  Maximum and Minimum Switching Frequency Limit

      n  Built-in Thermal Protection

      l   Available with SOT23-6L Package


      Applications

      l   LED Driver Power Supplies

      l   Commercial and Residential LED Fixtures

      l   Non Isolated Applications T8, E27, PAR30

      l   5w-35w Typical Application



      Pin Configuration

      Typical Application Circuit

      Ordering Information


      Part NumberDescription
      KP101BLGASOT23-6L,Halogen free in T&R, 3000Pcs/Reel


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      2021久久天天躁狠狠躁夜夜