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NCP4331 - Synchronous Buck Controller

Description

Pin 1 is the output of the auxiliary error amplifier embedded in the NCP4331.

of excessive coil or load current.

Pin 1 can clamp the main error amplifier output.

Features

  • ăHigh Gate Drive Capability.
  • ăBootstrap for N-MOSFET High-Side Drive.
  • ăTwo Embedded Error Amplifiers Allowing Constant Current Constant Voltage (CCCV) Operation.
  • ă±1.5% Regulation Voltage Reference Over 0°C to 85°C Temperature Range.
  • ăProgrammable Soft-Start.
  • ăThermal Shutdown for Overtemperature Protection.
  • ăPWM Operation Synchronized to the Converter Frequency.
  • ăOver-Lap Management for Soft Switching.
  • ăInternal Regulator.

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Datasheet preview – NCP4331

Datasheet Details

Part number NCP4331
Manufacturer ON Semiconductor
File Size 198.54 KB
Description Synchronous Buck Controller
Datasheet download datasheet NCP4331 Datasheet
Additional preview pages of the NCP4331 datasheet.

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Full PDF Text Transcription

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NCP4331 Synchronous Buck Controller for High Efficiency Post Regulation The NCP4331 houses a dual MOSFET driver intended to be used as a companion chip in ac-dc or dc-dc multi-output post regulated power supplies. Directly fed by the secondary ac signal, the device keeps power dissipation to the lowest while reducing external component count. Further, the implementation of N-channel MOSFETs gives NCP4331-based applications a significant advantage in terms of efficiency. Features •ăHigh Gate Drive Capability •ăBootstrap for N-MOSFET High-Side Drive •ăTwo Embedded Error Amplifiers Allowing Constant Current Constant Voltage (CCCV) Operation •ă±1.
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