4-45 V Input Current Mode Isolated Flyback PWM Controller

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Overview

The NCP12711 is a fixed−frequency peak−current−mode PWM controller containing all of the features necessary for implementing single−ended power converter topologies. The device operates from 4 V to 45 V without auxiliary winding and within its thermal capabilities. The controller contains a programmable oscillator capable of operating from 100 kHz to 1 MHz and integrates slope compensation to prevent subharmonic oscillations. The controller includes a programmable soft−start, input voltage UVLO protection, and an over−power protection (OPP) circuit which limits the total power capability of the circuit as the input voltage increases. The UVLO pin also features a shutdown comparator which allows for an external signal to disable switching and brings the controller into a low quiescent state. An onboard op−amp allows the implementation of primary−side regulated converters or non−isolated dc−dc converters.

  • Low to medium voltage isolated DC-DC
  • CCM & DCM Flyback Converters
  • Industrial Power
  • DC-DC Converters for Modules and Telecom Application
  • Low Voltage Operation
  • Adjustable Over Power Protection
  • NTC-Compatible Fault Interface
  • Frequency Jitter
  • Error Amplifier Option

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NCP12711ADNR2G

Active, New

Pb

A

H

P

MSOP-10

1

260

REEL

4000

F

Flyback

1

Current Mode

4

45

Adjustable

$0.6933

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