SY5839 controller equivalent, single stage buck pfc controller.
* Valley turn-on of the MOSFET to achieve low switching losses
* Power factor >0.90 with single-stage conversion.
* Low start up current: 15µ A typical
* .
It is a primary side controller without applying any secondary feedback circuit for low cost, and drives the Flyback co.
The SY5839 is a single stage Buck PFC controller targeting at LED lighting applications. It is a primary side controller without applying any secondary feedback circuit for low cost, and drives the Flyback converter in the quasi-resonant mode to achi.
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