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SY5810 Datasheet Single Stage Flyback And Pfc Controller

Manufacturer: Silergy

Overview: Applications Note: SY5810 Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary datasheet.

Datasheet Details

Part number SY5810
Manufacturer Silergy
File Size 346.28 KB
Description Single Stage Flyback And PFC Controller
Datasheet SY5810-Silergy.pdf

General Description

The SY5810 is a single stage Flyback and 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 achieve higher efficiency.

It keeps the Flyback converter in constant on time operation to achieve high power factor.

Key Features

  • Primary side control eliminates the opto-coupler.
  • Valley turn-on of the primary MOSFET to achieve low switching losses.
  • 0.3V primary current sense reference voltage leads to a lower sense resistance thus a lower conduction loss.
  • Internal high current MOSFET driver: 0.25A sourcing and 0.5A sinking.
  • Low start up current: 15µA typical.
  • Reliable short LED and Open LED protection.
  • Power factor >0.90 with single-stage conversion.

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SY5810 Distributor