NCP1681 - Totem Pole Power Factor Correction Controller

ON Semiconductor

NCP1681 Datasheet Preview — Preview of NCP1681 PDF

Datasheet Details

Part number	NCP1681
Manufacturer	ON Semiconductor ↗
File Size	2.17 MB
Description	Totem Pole Power Factor Correction Controller
Datasheet	NCP1681-ONSemiconductor.pdf

NCP1681 Product details

Description

Pin Number Pin Name Pin Description 1 FAULT Combined OVP/OTP fault pin.2 PFCOK The PFCOK pin is held low when the PFC output voltage is out of regulation and during fault condi- tions.The pin becomes active when the PFC output achieves regulation in nominal operation, sourc- ing a current proportional to the feedback voltage, VFB.The PFCOK pin is bidirectional; it can be used to enable a downstream converter and can be used by the downstream converter to force the NCP1681 into S

Features

Totem Pole PFC Topology Eliminates Input Diode Bridge Enabling Very High Efficiency & Compact Design.
AC Line Monitoring Circuit & AC Phase Detection.
Brownout Detection.
Digital Loop Compensation.
Novel Current Sensing Scheme Providing Inductor Current Upslope and Downslope Sensing.
PFCOK Indicator.
Skip/Standby Mode for Optimizing Light Load Performance.
Near.
Unity Power Factor in All Operating Modes Multi.

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Published: Oct 31, 2023 |