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SY26765IGD (SQ38865IGD)

Production
Integrated High Frequency Flyback DC-DC Converter for 48V Telecom Systems
Part number SY26765IGD
Channel(#) 1
Vin (min) (V) 10.5
Vin (max) (V) 75
Topology PSR/SSR flyback
Switching frequency (min)(kHz) 4
Switching frequency (max)(kHz) 800
Vout (min) (V) Programmable
Vout2 (min)(V)
Vout (max) (V) Programmable
Vout2 (max )(V)
Vref accuracy (±%) 1.7
Vout accuracy(±%)
Control mode Peak current mode
Duty cycle (max)(%) 81
Operation mode PWM/PFM
Iq (typ) (uA) 1200
Features Auto-recovery input UVP,Auto-recovery OCP,Auto-recovery SCP,Auto-recovery OTP
Package DFN5×6-8
Operating temperature range(°C) -40 to 125
Functional safety category
  • On Chip 180V Power Switch Circuit and Startup Circuit
  • 3.2A Switching Current Limit (Typ)
  • PSR/SSR Mode can be Selected
  • PSR(QR): 400kHz /800kHz Frequency Limit
  • SSR (fixed frequency): 200kHz≤fSW≤900kHz
  • Internal Soft-start  Frequency Modulation
  • Cycle by Cycle Current Limit Using SENSEFET
  • Active LEB Circuit  Line Undervoltage Detectors
  • Output Over Load Protection
  • Output Over Voltage Protection
  • Over Temperature Protection
  • Compact Package: DFN56-8
  •  RoHS Compliant and Halogen Free

Evaluation Board

  • 2025-12-22_144913

    Photo of evaluation board

  • 2025-12-22_144856

    Photo of evaluation board

EVB_SY26765IGD

The EVB_SY26765IGD is intended for evaluating Integrated High Frequency Flyback DC-DC Converter for 48V Telecom Systems

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12