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ML4802 - PFC/PWM Controller Combo with Green Mode

Datasheet Summary

Description

The ML 4802 is a controller for power factor corrected, switched mode power supplies that offers Green Mode operation and reduced start-up and operating currents.

Green Mode is an efficiency improving circuit feature which operates automatically in low power situations.

Features

  • Internally synchronized PFC and PWM in one IC Green Mode maximizes efficiency during low power standby operation Low supply current (Start-up 200µA typ. , operating 5.5mA typ. ) Average current continuous boost leading edge PFC High efficiency trailing edge PWM can be configured for current mode operation Reduced ripple current in the storage capacitor between the PFC and PWM sections PFC overvoltage comparator eliminates output “runaway” due to load removal Current fed gain modulator for improved.

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Datasheet Details

Part number ML4802
Manufacturer Micro Linear
File Size 299.05 KB
Description PFC/PWM Controller Combo with Green Mode
Datasheet download datasheet ML4802 Datasheet
Additional preview pages of the ML4802 datasheet.

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Full PDF Text Transcription

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August 2000 PRELIMINARY ML4802 PFC/PWM Controller Combo with Green Mode GENERAL DESCRIPTION The ML 4802 is a controller for power factor corrected, switched mode power supplies that offers Green Mode operation and reduced start-up and operating currents. Green Mode is an efficiency improving circuit feature which operates automatically in low power situations. This feature helps meet the demands of Energy Star™ programs. Power Factor Correction (PFC) offers the use of lower cost bulk capacitors, reduces power line loading and stress on the switching FETs. The ML4802 includes circuits for the implementation of a leading edge, average current, “boost” type power factor corrector and a trailing edge Pulse Width Modulator (PWM).
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