Primary-Side Regulation PWM Power Switch

OB2211 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. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. By On-Bright Electronics, Inc.
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OB2211 Application circuits
OB2211 circuits
This is one application circuit of OB2211,If you need more circuits,please download OB2211's pdf datasheet.


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