Controllers | NCV12711

Automotive Qualified 4-45 Vin DC/DC Peak Current Controller

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Overview

The NCV12711 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 opamp 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
  • Single-ended Flyback and Forward Converters for Electric Vehicles
  • 12 V & 24 V Automotive Auxiliary Power Supply Unit
  • Wide Input Range (4 – 45 V in MSOP10)
  • Current Mode Control with Integrated Slope Compensation
  • Single Resistor Programmable Oscillator
  • Input Voltage UVLO with Hysteresis
  • 1 A Source / Sink Gate Driver
  • Several Fault Protections:
    - Over-Power Protection
    - Overload Protection with 30 ms Overload Timer
    - NTC-Compatible Fault Interface for Thermal Protection
    - Output OVP Fault Interface
    - Fault Auto-recovery Mode with 1 s Auto-recovery Period
  • Adjustable Soft−Start on Peak Current and Frequency

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VCC Min (V)

VCC Max (V)

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NCV12711ADNR2G

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Active

CAD Model

Pb

A

H

P

MSOP-10

846AE

1

260

REEL

4000

F

Flyback

1

Current Mode

4

45

Adjustable

$0.7466

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