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ML4812

Part Number	ML4812
Manufacturer	Micro Linear
Description	Power Factor Controller
Published	May 7, 2005
Detailed Description	April 1998 ML4812* Power Factor Controller GENERAL DESCRIPTION The ML4812 is designed to optimally facilitate a peak cu...
Datasheet	ML4812 PDF File

Overview

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 ou...

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