onsemi FDMF3170

The FDMF3170 is next generation of Smart Power Stage (SPS) solutions with fully optimized, ultracompact, integrated MOSFETs plus driver for highcurrent, 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, minimized system inductance, and power MOSFET RDS(ON). The integration of Power MOSFETs with a driver IC also enables advanced high accuracy module thermal and current monitoring. The FDMF3170 provides an output signal (IMON), which reports the real-time module current. IMON is a very accurate, 5 μA/A signal representing the real time Power MOSFET drain currents. The IMON signal can be used to replace output filter inductor DCR current sense or resistor sense methods. The FDMF3170 also includes very accurate module thermal monitor (TMON). TMON is a voltage sourced PTAT signal that is calibrated to provide a 0.8 V output at 25 °C with an 8 mV/°C slope.

• Up to 70 A of Current Handling Capability
• High-Performance, Universal Footprint, Copper-Clip 5 mm x 6 mm PQFN Package Fairchild’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 1 MHz
• Integrated Current Monitor Compliant with Intel’s VR13 Accuracy Requirements
• Integrated Temperature Monitor (TMON)
• Catastrophic Fault Detection - 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 Fairchild Green Packaging and RoHS Compliance

• CPU and Memory Voltage Regulators in VR13 Purley Systems
• High-Current Utility Rails in Server Systems
• Communications Infrastructure Systems