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NCP4326 - Secondary Controller

Description

Pin No.

available for loop compensation purpose.

This is the inverting input of the error amplifier 1.

Features

  • 0% to 100% Duty Cycle Range.
  • Integrated Shunt Regulator for Optocoupler Control.
  • Internal Voltage Reference (1.25 V, 1% @ 25°C).
  • 2 Independent Power MOSFET Drivers.
  • Enable/Disable for Each Driver.
  • Independent Soft.
  • Starts on both Output Drivers.
  • Independent Skip Cycle on both Output Drivers.
  • Standby Pin.
  • 580 / 650 mA Peak Current Source/Sink Driver Capability.
  • Synchronization Pin.
  • 5 V Under.

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Datasheet preview – NCP4326

Datasheet Details

Part number NCP4326
Manufacturer ON Semiconductor
File Size 449.49 KB
Description Secondary Controller
Datasheet download datasheet NCP4326 Datasheet
Additional preview pages of the NCP4326 datasheet.

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Full PDF Text Transcription

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NCP4326 Secondary Controller for Multi-Output Quasi-Resonant Switchmode Power Supplies This secondary controller significantly improves the overall efficiency and cross−regulation figures when used in a Switchmode Power Supply. Compared to traditional regulation schemes, the NCP4326 provides superior performance in cross−regulation by individually regulating outputs. Powered from a main winding, the device actuates two independent switches that precisely adjust the considered outputs to resistor−selectable voltages. This controller also integrates a precision reference voltage, which together with a dedicated operational amplifier reduces the feedback loop elements to the minimum. In the end three independent output voltages can be controlled by a single device.
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