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OB2211

Part Number	OB2211
Manufacturer	On-Bright
Description	Primary-Side Regulation PWM Power Switch
Published	Oct 14, 2014
Detailed Description	OB2211/OB2212 Primary-Side Regulation PWM Power Switch GENERAL DESCRIPTION OB2211/OB2212 is an offline PWM Power switch ...
Datasheet	OB2211 PDF File

Overview

OB2211/OB2212 Primary-Side Regulation PWM Power Switch GENERAL DESCRIPTION OB2211/OB2212 is an offline PWM Power switch for low power AC/DC charger and adaptor applications.
It operates in primary-side sensing and regulation.
Consequently, opto-coupler and TL431 could be eliminated from design.
Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below.
In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin.
In CV control, multi-mode operations are utilized to achieve high performance and high efficiency.
Device operates in fixed frequency mode at large load conditions, frequency re...

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