ML4812 Datasheet PDF - Micro Linear Power Factor Controller Specs

ML4812 - Power Factor Controller

Datasheet Summary

Description

The ML4812 is designed to optimally facilitate a peak current control boost type power factor correction system.

Special care has been taken in the design of the ML4812 to increase system noise immunity.

Features

s s Precision buffered 5V reference (±0.5%) Current-input gain modulator reduces external components and improves noise immunity Programmable ramp compensation circuit 1A peak current totem-pole output drive Overvoltage comparator helps prevent output voltage “runaway” Wide common mode range in current sense comparators for better noise immunity Large oscillator amplitude for better noise immunity s s s s s.
Some Packages Are End Of Life BLOCK.

Datasheet Details

Part number	ML4812
Manufacturer	Micro Linear
File Size	215.75 KB
Description	Power Factor Controller
Datasheet	ML4812 Datasheet
Additional preview pages of the ML4812 datasheet.

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Full PDF Text Transcription

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April 1998 ML4812* Power Factor Controller GENERAL DESCRIPTION The ML4812 is designed to optimally facilitate a peak current control boost type power factor correction system. Special care has been taken in the design of the ML4812 to increase system noise immunity. The circuit includes a precision reference, gain modulator, error amplifier, overvoltage protection, ramp compensation, as well as a high current output. In addition, start-up is simplified by an under-voltage lockout circuit with 6V hysteresis. In a typical application, the ML4812 functions as a current mode regulator. The current which is necessary to terminate the cycle is a product of the sinusoidal line voltage times the output of the error amplifier which is regulating the output DC voltage.

Published: May 7, 2005 |