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SY5040 Datasheet Ccm+qr Mode Ssr Flyback Controller

Manufacturer: Silergy

Overview: Application Note: SY5040 CCM+QR Mode SSR Flyback Controller Preliminary Specification.

Datasheet Details

Part number SY5040
Manufacturer Silergy
File Size 1.13 MB
Description CCM+QR Mode SSR Flyback Controller
Datasheet SY5040-Silergy.pdf

General Description

SY5040 is a peak current mode SSR flyback controller that bine CCM and QR mode together to minimize transformer size and achieve high efficiency.

Under low line and heavy load condition, SY5040 works under CCM, while under high line or medium load, it works under QR mode (valley switching).

SY5040 adopts frequency fold back control when load decreases to achieve high average efficiency.

Key Features

  • Rated Switching Frequency: 65kHz.
  • CCM+QR Combined Operating Mode.
  • Frequency Fold Back and Burst Mode Control.
  • Minimum Switching Frequency Limited to 25kHz.
  • FSW Modulation to Reduce EMI Noise.
  • Programmable Brownout Protection by ZCS Pin.
  • Programmable Output OVP by ZCS Pin.
  • Programmable External OTP by CS Pin.
  • OLP, VCC OVP, Internal OTP.
  • Secondary Diode Short Circuit Protection.
  • OCP Compensation Over Universal Input Range.
  • Low Start up C.

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SY5040 Distributor