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PWM Controller, Highly Integrated Dual-Mode Active Clamp

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NCP1565MNTXG General Description

The NCP1565 is a highly integrated dual-mode active-clamp PWM controller targeting next-generation high-density, high-performance and small to medium power level isolated dc-dc converters for use in telecom and datacom industries. It can be configured in either voltage mode control with input voltage feed-forward or peak current mode control. Peak current mode control may be implemented with input voltage feed forward as well. Adjustable adaptive overlap time optimizes system efficiency based on input voltage and load conditions.This controller integrates all the necessary control and protection functions to implement an isolated active clamp forward or asymmetric half-bridge converter. It integrates a high-voltage startup bias regulator. The NCP1565 has a line undervoltage detector, cycle-by-cycle current limiting, line voltage dependent maximum duty ratio limit, and programmable overtemperature protection using an external thermistor. It also includes a dual-function FLTSD pin used for communicating the presence of a fault but also for shutting down the controller.

ON Semiconductor, LLC Inventory

Key Features

  • Both Voltage Mode Control and Current Mode Control
  • Line feedforward
  • Adaptive Overlap time Control
  • Integrated 120 V HV Startup
  • Programmable Line Undervoltage Lockout (UVLO) with Adjustable Hysteresis
  • Cycle by Cycle Peak Current Limiting
  • Overcurrent Protection Based on Average Current
  • Programmable Duty Ratio Clamp
  • Programmable Soft-Start
  • Programmable Shutdown and Restart Delays
  • Programmable External Overtemperature Protection Using Thermistor
  • FLT/SD pin Used for Fault reporting and Shutdown Input
  • Programmable Oscillator with 1.5 MHz Maximum Frequency
  • Main Switch Drive Capability of -2 A/3 A
  • Active Clamp Switch Drive Capability of -2 A/1 A
  • Short Circuit Protection
  • 5 V2% Voltage Reference
  • VCC Range: from 6.5 V to 20 V
ON Semiconductor, LLC Original Stock


  • High Efficiency Isolated dc−dc Converters
  • Server Power Supplies
  • 24 V and 48 V Telecom systems
  • 42 V Automotive Applications
ON Semiconductor, LLC Inventory


Status Active Package Type QFN-24
Case Outline 485CW MSL Temp (°C) 260
Container Type REEL


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


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NCP1565MNTXG Datasheet PDF

Preliminary Specification NCP1565MNTXG PDF Download

NCP1565MNTXG PDF Preview

Buying Guide

  • What is the lifespan of NCP1565MNTXG?

    The lifespan of NCP1565MNTXG depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of NCP1565MNTXG?

    You can find it with PDF Datasheet for NCP1565MNTXG on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of NCP1565MNTXG?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

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