PWM Controller, Highly Integrated Dual-Mode Active Clamp

Favorite

Overview

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.

  • High Efficiency Isolated dc−dc Converters
  • Server Power Supplies
  • 24 V and 48 V Telecom systems
  • 42 V Automotive Applications
  • Telecom systems
  • Servers
  • 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 V 2% Voltage Reference
  • VCC Range: from 6.5 V to 20 V

Product List

If you wish to buy products or product samples, please log in to your onsemi account.

Search

Close Search

Products:

1

Share

Product Groups:

Orderable Parts:

1

Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Phases

Control Mode

VCC Min (V)

VCC Max (V)

fSW Typ (kHz)

Reference Price

NCP1565MNTXG

Loading...

Active

CAD Model

Pb

A

H

P

QFN-24

1

260

REEL

4000

Y

Forward

1

Current/Voltage Mode

6.5

120

Programmable up to 1.5Mhz

$1.33

More Details

Show More

1-25 of 25

Products per page

Jump to :