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NCP1362 - Primary Side PWM Controller

Description

Pin Name Function 1 Vs/ZCD Connected to the auxiliary winding; this pin senses the voltage output for the primary regula- tion and detects the core reset event for the Quasi

Resonant mode of operation.

This is the error amplifier output.

Features

  • Constant Voltage Primary.
  • Side Regulation < 5%.
  • Constant Current Primary.
  • Side Regulation < 5%.
  • LFF and BO Feature on a Dedicated Pin:  BO Detection  LFF for CC Regulation Improvement.
  • Quasi.
  • Resonant with Valley Switching Operation.
  • Optimized Light Load Efficiency and Stand.
  • by Performance.
  • Maximum Frequency Clamp (No Clamp, 80, 110 and 140 kHz).
  • Cycle by Cycle Peak Current Limit.
  • Output Voltage Under Voltage and Over Volt.

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Datasheet Details

Part number NCP1362
Manufacturer onsemi
File Size 638.99 KB
Description Primary Side PWM Controller
Datasheet download datasheet NCP1362 Datasheet

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Full PDF Text Transcription

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Primary Side PWM Controller for Low Power Offline SMPS NCP1362 The NCP1362 is a highly integrated primary side quasi−resonant flyback controller capable of controlling rugged and high−performance off−line power supplies. Due to a Novel Method this new controller saves the secondary feedback circuitry for Constant Voltage and Constant Current regulation, achieving excellent line and load regulation without traditional opto coupler and TL431 voltage reference. The NCP1362 operates in valley lockout quasi−resonant peak current mode control mode at high load to provide high efficiency.
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