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RS2112

Part Number	RS2112
Manufacturer	PTC
Description	High Precision CC/CV Primary-Side PWM Power Switch
Published	Oct 14, 2014
Detailed Description	RS2112 High Precision CC/CV Primary-Side PWM Power Switch DESCRIPTION RS2112 is a high performance offline PSR controll...
Datasheet	RS2112 PDF File

Overview

RS2112 High Precision CC/CV Primary-Side PWM Power Switch DESCRIPTION RS2112 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, PFM operations are utilized to achieve high performance and high efficiency.
In addition, good load regulation is achieved by the built-in cable drop compensation.
The ch...

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