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SY5810 - Single Stage Flyback And PFC Controller

Datasheet Summary

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.

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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Datasheet preview – SY5810

Datasheet Details

Part number SY5810
Manufacturer Silergy
File Size 346.28 KB
Description Single Stage Flyback And PFC Controller
Datasheet download datasheet SY5810 Datasheet
Additional preview pages of the SY5810 datasheet.

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Full PDF Text Transcription

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Applications Note: SY5810 Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary datasheet 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. Ordering Information SY5810 □(□□)□ Temperature Code Package Code Optional Spec Code Temperature Range: -40°C to 85°C Ordering Number Package type Note SY5810ABC SOT23-6 ---- Features • Primary side control eliminates the opto-coupler.
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