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SC4910B - High Performance Secondary Side Controller

This page provides the datasheet information for the SC4910B, a member of the SC4910A High Performance Secondary Side Controller family.

Datasheet Summary

Description

The SC4910A/B is an integrated, full featured, secondary side controller designed for use in single ended and isolated switch mode power supplies with synchronous rectification where efficiency and fast transient response are of primary concern.

Features

  • synchronous rectification, multiphase link capability, programmable secondary side delay, programmable switching frequency and programmable maximum duty cycle. It is designed for either current mode or voltage mode operation. The SC4910A has a typical turn-on threshold of 9V and the SC4910B has a threshold of 4.5V. SC4910A/B Features ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ Synchronous rectification with adaptive control Programmable secondary side delay Programmable switching frequency Programmable max. duty.

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Datasheet preview – SC4910B

Datasheet Details

Part number SC4910B
Manufacturer Semtech Corporation
File Size 364.03 KB
Description High Performance Secondary Side Controller
Datasheet download datasheet SC4910B Datasheet
Additional preview pages of the SC4910B datasheet.

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Full PDF Text Transcription

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High Performance Secondary Side Controller with Synchronous Rectifier POWER MANAGEMENT Description The SC4910A/B is an integrated, full featured, secondary side controller designed for use in single ended and isolated switch mode power supplies with synchronous rectification where efficiency and fast transient response are of primary concern. The SC4910A/B has outputs for both primary FET and secondary synchronous rectification. The primary drive output is designed to drive a small and low cost pulse transformer to isolate the primary FET driver. The secondary control makes it much easier www.DataSheet4U.com to monitor and control the system load with tight control loops and implement load current sharing and synchronous rectification.
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