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UCC3961 - Advanced Primary-Side Startup Controller

This page provides the datasheet information for the UCC3961, a member of the UCC2961 Advanced Primary-Side Startup Controller family.

Datasheet Summary

Description

The UCC3961 advanced primary-side startup controller is a unique solution that provides all the primary-side functions required for a single-ended, isolated, switch-mode power converter incorporating secondary-side PWM control.

Features

  • such as output current sharing and synchronous rectification are implemented more easily. The UCC3961 provides all the circuitry required on the primary side of a secondary-side controlled power supply. It features a free running 60-kHz to 360-kHz oscillator which is synchronizable to the secondary-side PWM signal and also has the ability to accept start/stop PWM commands from the isolating pulse-edge transformer (PET). The use of an extremely small and low-cost pulse transformer allows for high.

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Datasheet preview – UCC3961

Datasheet Details

Part number UCC3961
Manufacturer Unitrode
File Size 281.28 KB
Description Advanced Primary-Side Startup Controller
Datasheet download datasheet UCC3961 Datasheet
Additional preview pages of the UCC3961 datasheet.

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Full PDF Text Transcription

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ą UCC2961, UCC3961 ADVANCED PRIMARYĆSIDE STARTUP CONTROLLER D Operates with Secondary–Side PWM Control D Isolated PWM Command through a Pulse Transformer D Initial Free-Running Soft-Startup with Duty-Cycle Clamping D Up to 400-kHz Synchronizable Switching Frequency D High-Current FET Drive (1.5-A Sink, 0.
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