NEX81801DA - Adaptive Synchronous Rectifier Controller

Description

The NEX81801DA and NEX81802DA (NEX81801/2DA) are high performance synchronous rectification controllers used in switching mode power supplies.

It supports operation in Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM) and quasi-resonant flyback converters.

Features

Supports DCM, CCM, QR operation.
Supports up to 800 kHz switching frequency.
Standard and logic level MOSFET driving capability.
Wide output range down to 0 V with 2-channel VCC supply.
No need for auxiliary winding for high-side or low- side rectification.
Smart proportional gate driver for fast SR turn-off at CCM.
Adjustable turn-on blanking time for increased noise immunity.
Proprietary adaptive turn-on detection prevent.

nexperia

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Datasheet Details

Part number	NEX81801DA
Manufacturer	nexperia
File Size	801.79 KB
Description	Adaptive Synchronous Rectifier Controller
Datasheet	NEX81801DA Datasheet
Additional preview pages of the NEX81801DA datasheet.

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Full PDF Text Transcription

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TSOT23-6 NEX81801DA; NEX81802DA Adaptive Synchronous Rectifier (SR) Controller Rev. 2 — 16 April 2025 Product data sheet 1. General description The NEX81801DA and NEX81802DA (NEX81801/2DA) are high performance synchronous rectification controllers used in switching mode power supplies. It supports operation in Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM) and quasi-resonant flyback converters. The NEX81801/2DA regulates the forward drop voltage of an external synchronous rectifier (SR) MOSFET in two stages. This allows the SR FET to turn off quickly when the VDS becomes positive.

Published: Dec 12, 2024 |