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SY5800A Datasheet Single Stage Flyback And Pfc Controller

Manufacturer: Silergy

Overview: Applications Note: SY5800A Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary Specification.

Datasheet Details

Part number SY5800A
Manufacturer Silergy
File Size 759.12 KB
Description Single Stage Flyback And PFC Controller
Datasheet SY5800A-Silergy.pdf

General Description

The SY5800A 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: 1A sourcing and 2A sinking.
  • Low start up current: 15uA typical.
  • Reliable short LED and Open LED protection.
  • Power factor >0.90 with single-stage conversion.
  • C.

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SY5800A Distributor