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AS2916 - Primary Side PWM Controller

General Description

The AS2916 is a dual, full featured, pulse width modulation controller.

The second controller is intended to run the auxiliary supply.

Both controllers share common oscillator and power up logic.

Key Features

  • that reduce component count and improve specifications in a wide range of power supply designs. The added functionality also includes bulk voltage sensing, overvoltage input and soft start. The PWM function is controlled by the current sense comparator for normal current mode control and a second comparator for voltage mode soft start. A buffered RAMP signal is available for slope compensation without loading the oscillator. The output stage is a high current totem pole output that sees only 140.

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Datasheet Details

Part number AS2916
Manufacturer Si
File Size 130.32 KB
Description Primary Side PWM Controller
Datasheet download datasheet AS2916 Datasheet

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Full PDF Text Transcription (Reference)

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Si LINK AS2916 Primary Side PWM Controller DESCRIPTION The AS2916 is a dual, full featured, pulse width modulation controller. The second controller is intended to run the auxiliary supply. Both controllers share common oscillator and power up logic. Based on an improved AS3842, the AS2916 provides additional features that reduce component count and improve specifications in a wide range of power supply designs. The added functionality also includes bulk voltage sensing, overvoltage input and soft start. The PWM function is controlled by the current sense comparator for normal current mode control and a second comparator for voltage mode soft start. A buffered RAMP signal is available for slope compensation without loading the oscillator.