ON Semiconductor - FDMF3170

The FDMF3170 is ON Semiconductor’s next generation Smart Power Stage (SPS) solutions with fully optimized, ultra-compact, integrated MOSFETs with advanced driver IC current and temperature sensors, for high-current, high frequency, and synchronous buck DC-DC converters.

With an integrated approach, the SPS switching power stage is optimized for driver and MOSFET dynamic performance, system parasitic reduction, and power MOSFET RDS(ON). The integration of Power MOSFETs with a driver IC also enables high accuracy module-level current and thermal monitoring. The FDMF3170 provides an output signal (IMON), which reports the real-time module current. The IMON signal can be used to replace inductor DCR current sense or resistor sense methods. There is also very accurate thermal monitoring (TMON) that provides a 0.8V output at 25°C with an 8 mV / °C slope.

Target applications

  • CPU and Memory Voltage Regulators Compliant with Intel's VR13 Purley Systems
  • High-Current Multiphase Voltage Regulators
  • Graphics Processing Unit (GPU) Cards
  • Server, Storage, Telecom
  • DC/DC Power Module


  • Up to 70 a instantaneous peak current handling capability
  • High-performance, universal footprint, copper-clip 5mm x 6mm PQFN package
  • ON Semiconductor’s Powertrench® MOSFETs for clean voltage waveforms and reduced ringing
  • 30V / 25V breakdown voltage MOSFETs for higher long term reliability
  • Optimized FET pair for highest efficiency at 10% ~ 15 % duty cycle
  • Optimized for switching frequencies up to 1MHz
  • Integrated current monitoring (IMON)
  • Integrated temperature monitor (TMON)
  • Catastrophic fault detection features
  • Thermal flag (OTP) for over-temperature condition
  • Over-current protection fault (OCP)
  • High-side short detect fault
  • Under-voltage lockout (UVLO) on VCC and PVCC
  • ON Semiconductor green packaging
  • Pb-free, Halogen free/BFR free and RoHS compliant


  • Optimized for driver and MOSFET dynamic performance, system parasitic reduction, and power MOSFET RDS(ON)
  • High accuracy module-level current and thermal monitoring.


ON Semiconductor FDMF3170

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Product Overview


Smart Power Stage (SPS) modules with integrated current and temperature monitors


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