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SY5800A - Single Stage Flyback And PFC Controller

Datasheet Summary

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.

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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Datasheet Details

Part number SY5800A
Manufacturer Silergy
File Size 759.12 KB
Description Single Stage Flyback And PFC Controller
Datasheet download datasheet SY5800A Datasheet
Additional preview pages of the SY5800A datasheet.

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Full PDF Text Transcription

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Applications Note: SY5800A Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary Specification 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. Ordering Information SY5800 □(□□)□ Temperature Code Package Code Optional Spec Code Temperature Range: -40°C to 125°C Ordering Number SY5800AFBC SY5800AFAC Package type Note MSOP10 ---- SO8 ---- Features • Primary side control eliminates the opto-coupler.
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