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SY23498XDQ (SY50298XDQ)

Production
High Frequency QR Flyback Converter with Valley Lockout and E-mode GaN Integrated
Part number SY23498XDQ
Pout (max) (W) 140
HV startup YES
Operation mode QR
Integrated FETs type GaN
Breakdown voltage (V) 700
Ron (typ) (mΩ) 0.104
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 QFN5×7-18
Operating temperature range(°C) -40 to 125
Functional safety category
  • DCM+QR Combined Operating Mode
  • Adaptive OCP (LPS, Limited Power Source)
  • Integrated GaN (700V 0.104Ohm_typ)
  • New Package for Excellent Heat Sink
  • Programmable Gate Driver Current
  • 140V LDO in VCCH Pin
  • Switching Frequency Range: 25kHz~500kHz
  • Valley Lockout from 1 to 6th
  • Low Frequency Burst (1kHz)
  • Frequency Modulation to Reduce EMI Noise
  • Internal Soft Start
  • Integrated 700V HV Start up
  • Brown In/Out Protection
  • X-cap Discharge Protection
  • Programmable Output OVP&UVP
  • Current Sense Resistor Short Protection
  • Internal & External OTP
  • Compact Package: QFN 5×7-18 

Evaluation Board

  • 2025-12-22_173253

    Photo of evaluation board

  • 2025-12-22_173315

    Photo of evaluation board

  • 2025-12-22_173242

    Photo of evaluation board

  • 2025-12-22_173304

    Photo of evaluation board

EVB_SY23498XDQ

The EVB_SY23498XDQ is intended for evaluating High Frequency QR Flyback Controller

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12