USRB02 Datasheet PDF - Unisonic Technologies HIGH PRECISION CC/CV PRIMARY SIDE SWITCH Specs

USRB02 - HIGH PRECISION CC/CV PRIMARY SIDE SWITCH

Datasheet Summary

Description

The UTC USRB02 is a primary controller for charger and adapter applications.

The controlled variable is transferred by an auxiliary winding from the secondary to the primary side.

Features

S.
±5% constant voltage regulation at universal AC input.
Primary side control without TL431 and opto-coupler.
High precision constant current regulation at universal AC input.
Programmable CV and CC regulation.
Eliminates control loop compensation circuitry.
Flyback topology in DCM operation.
Random frequency modulation to reduce system EMI.
Built-in power NPN.
Multi-mode operation for efficiency improving.
Programmable cable drop compensation.

Datasheet Details

Part number	USRB02
Manufacturer	Unisonic Technologies
File Size	220.55 KB
Description	HIGH PRECISION CC/CV PRIMARY SIDE SWITCH
Datasheet	USRB02 Datasheet
Additional preview pages of the USRB02 datasheet.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD USRB02 Preliminary LINEAR INTEGRATED CIRCUIT HIGH PRECISION CC/CV PRIMARY SIDE SWITCH  DESCRIPTION The UTC USRB02 is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device operates in Pulse Frequency Modulation (PFM) in CC mode as well at large load condition and it operates in Pulse Width Modulation (PWM) with frequency reduction at light/medium load condition. The UTC USRB02 operates in primary-side sensing and regulation. Opto-coupler and TL431 could be eliminated. It also eliminates the need of loop compensation circuitry while maintaining stability. The UTC USRB02 achieves high precision CV/CC regulation and high power efficiency.

Published: Jan 31, 2016 |