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OB2550

Part Number	OB2550
Manufacturer	On-Bright Electronics
Description	High Precision CC/CV Primary-Side Controller
Published	Mar 23, 2015
Detailed Description	OB2550 High Precision CC/CV Primary-Side Controller GENERAL DESCRIPTION OB2550 is a high performance offline PSR contro...
Datasheet	OB2550 PDF File

Overview

OB2550 High Precision CC/CV Primary-Side Controller GENERAL DESCRIPTION OB2550 is a high performance offline PSR controller for low power AC/DC charger and adapter applications.
It operates in primary-side sensing and regulation.
Consequently, opto-coupler and TL431 could be eliminated.
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.
In addition, good load regulation is achieved by the built-in cable drop compensation...

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