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ML4841 - Variable Feedforward PFC/PWM Controller Combo

General Description

The ML4841 is a controller for power factor corrected, switched mode power supplies.

Key Features

  • s s s Internally synchronized PFC and PWM in one IC Low total harmonic distortion Reduced ripple current in the storage capacitor between the PFC and PWM sections Average current, continuous mode, boost type, leading edge PFC High efficiency trailing edge PWM can be configured for current mode or voltage mode operation Average line voltage compensation with brown-out control PFC overvoltage comparator eliminates output “runaway” due to load removal Current-fed multiplier for improved noise immu.

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Datasheet Details

Part number ML4841
Manufacturer Micro Linear
File Size 282.57 KB
Description Variable Feedforward PFC/PWM Controller Combo
Datasheet download datasheet ML4841 Datasheet

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Other Datasheets by Micro Linear

Part Number Description
ML4800 Power Factor Correction and PWM Controller Combo
ML4801 Variable Feedforward PFC/PWM Controller Combo
ML4802 PFC/PWM Controller Combo with Green Mode
ML4803 8-Pin PFC and PWM Controller Combo
ML4804 Power Factor Correction and PWM Controller Combo

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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May 1997 ML4841* Variable Feedforward PFC/PWM Controller Combo GENERAL DESCRIPTION The ML4841 is a controller for power factor corrected, switched mode power supplies. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC1000-2-3 specifications. The ML4841 includes circuits for the implementation of a leading edge, average current, “boost” type power factor correction, and a trailing edge, pulse width modulator (PWM). The PFC frequency of the ML4841 is automatically set at half that of the PWM frequency generated by the internal oscillator.