OB2203 Datasheet

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OB2203 Datasheet - Quasi-Resonant Flyback PWM Controller

OB2203   OB2203  

Datasheet: OB2203 datasheet

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Description: OB2203 Quasi-Resonant Flyback PWM Contro ller GENERAL DESCRIPTION OB2203 is a h ighly integrated Quasi-Resonant (QR) co ntroller optimized for high performance offline flyback converter applications . At normal load condition, it operates in QR mode with minimum drain voltage switching. To meet the CISPR-22 EMI sta rting at 150KHz, the maximum switching frequency is internally limited to 130K Hz. It operates in PFM mode for high po wer conversion efficiency at light load condition. When the loading is very sm all, the IC operates in ‘Extended Bur st Mode’ to minimize the switching lo ss. As a result, lower standby power co nsumption and higher conversion efficie ncy is achieved. A built-in P-channel MO

Manufacture Part Number Description

On-Bright Electronics


Quasi-Resonant Flyback PWM Controller

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