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LX1570 Datasheet PHASE MODULATED AC SYNCHRONOUS SECONDARY-SIDE CONTROLLER

Manufacturer: Microsemi (now Microchip Technology)

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General Description

The LX1570/71 series of controller ICs are designed to provide all control functions in a secondary-side regulator for isolated auxiliary or secondary power supplies.

Auxiliary or secondary-side controllers are used in a variety of applications including multiple output off-line power supplies, commonly found in desktop computers, as well as telecommunications applications.

Although they can be used in all secondary output applications requiring precision regulation, they are mainly optimized for outputs delivering more than 3A current where standard three-terminal regulators lack the desired efficiency.

Overview

P A T E N T P E N D I N G LIN D O C #: 1570 LX1570/1571 PHASE MODULATED AC SYNCHRONOUS SECONDARY-SIDE CONTROLLER T H E I N F I N I T E P O W E R O F I N N O VA T I O N P R E L I M I N A R Y D A T A S H E E.

Key Features

  • such as 100% duty cycle operation for maximum energy transfer, pulse-by-pulse and hiccup current limiting with long off-time between the cycles for reduced power dissipation, high-frequency operation for smaller magnetics, softstart, and current mode control for excellent dynamic response. K E Y F E AT U R E S p.

More Datasheets from Microsemi (now Microchip Technology)

Part Number Description
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LX1555 ULTRA-LOW START-UP CURRENT/ CURRENT-MODE PWM
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LX1004 1.2V & 2.5V MICROPOWER VOLTAGE REFERENCES
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