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SY23494HZP (SY50294HZP)

Production
High Frequency QR Flyback Converter with Valley Lockout, Accuracy Output OCP and E-mode GaN
Part number SY23494HZP
Pout (max) (W) 45
HV startup YES
Operation mode QR
Integrated FETs type GaN
Breakdown voltage (V) 700
Ron (typ) (mΩ) 0.365
No load loss (mW) <50
Switching frequency (min)(kHz) 25
Switching frequency (max)(kHz) 500
Features SSR CV,Valley lock,Auto-recovery OCP,Burst mode
Package SSOP9E
Operating temperature range(°C) -40 to 125
Functional safety category
  • Integrated 700V E-mode GaN FET
  • DCM+QR Combined Operating Mode
  • Switching Frequency Range: 25kHz–500kHz
  • VCCH up to 140V Power Supply
  • Automatic Valley Lockout from 1 to 6 Cycles
  • Accuracy Output OCP Protection
  • Adaptive OCP (LPS, Limited Power Source)
  • Low Frequency Burst (1kHz)
  • Frequency Modulation to Reduce EMI Noise (Configurable using ZCS Resistor)
  •  Internal Soft-Start
  • Integrated 700V HV Startup
  • Brown-In/Out Protections
  • Programmable Output OVP and UVP
  • Current Sense Resistor Short Protection
  • Internal OTP
  • Compact Package: SSOP9E

Evaluation Board

  • 2025-12-22_150107

    Photo of evaluation board

  • 2025-12-22_150123

    Photo of evaluation board

  • 2025-12-22_150152

    Photo of evaluation board

  • 2025-12-22_150137

    Photo of evaluation board

EVB_SY23494HZP

The EVB_SY23494HZP is intended for evaluating High Frequency QR Flyback Coverter with Lock Ring

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12