SY? 矽力杰SY 原装SY? 真芯SY 假一赔十的品质保障,量大可另行商榷?
胡小姐 -? Q: 还可提供技术支持
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矽力杰内置MOS恒流驱动方案.美国矽力杰.SY.SY.General Desion
The SY is a single stage Flyback and PFC regulator targeting at LED lighting applications. It integrates a V MOSFET to decrease physical volume .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 achieve higher efficiency. It keeps the Flyback converter in constant on time operation to achieve high power factor.
Features
* Integrated V MOSFET
* Primary side control eliminate to the opto-coupler.
* Valley turn-on of the primary MOSFET to achieve low switching losses
* .V primary current sense reference voltage leads to a lower sense resistance thus a lowerconduction loss.
* Low start up current: μA typical
* Reliable short LED and Open LED protection
* Power factor >. with single-stage conversion.
* Maximum frequency limit: kHz
* Compact package: SO
SY
General Desion
The SY is a W single stage Buck PFC controller targeting at LED lighting applications. It integrates a V MOSFET to decrease physical volume. It adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor, and quasi-resonant valley turn-on high efficiency operation.
It integrates open/short LED protection and eliminates the need for opto-coupler, thus minimizing the component count and board size.
Features
* Integrated V MOSFET
* Valley turn-on of the MOSFET to achieve low switching losses
* .V current sense reference voltage leads to a lower sense resistance thus a lower conduction loss
* Low start up current: μA typical
* Reliable short LED and Open LED protection
* Power factor >. with single-stage conversion.
*Maximum frequency limit: kHz
*Compact package: SO
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