FSB50450US

Power Driver Modules Overview

The FSB50450US is a Motion SPM® 5 series intelligent power module featuring a 3-phase inverter with integrated gate drivers and protection. It utilizes FRFET MOSFET technology rated for 500 V drain-source voltage and a maximum on-resistance of 2.4 Ω. The module provides continuous drain current ratings of 1.5 A at 25°C case temperature and 1.1 A at 80°C, with peak currents up to 3.8 A. It includes separate open-source pins from low-side MOSFETs for three-phase current sensing. The isolation rating is 1500 Vrms, and it operates within a junction temperature range of -40°C to 150°C.

Power Driver Modules Feature Summary

• Integrates optimized gate drive for built-in MOSFETs to minimize electromagnetic interference and switching losses.
• Features active-HIGH interface compatible with 3.3 V and 5 V logic levels using Schmitt-trigger inputs.
• Includes multiple on-module protection features such as under-voltage lockouts for both high-side and low-side supplies.
• Provides separate open-source terminals for each phase to support diverse control algorithms.

Power Driver Modules Applications

• 3-Phase Inverter Driver for Small Power AC Motor Drives
• AC Induction Motor Control Systems
• Brushless DC (BLDC) Motor Applications
• Permanent Magnet Synchronous Motor (PMSM) Drives

Power Driver Modules Procurement Notes

Verify the specific ordering suffix against the manufacturer's official database, as Fairchild part numbers containing underscores may have been converted to dashes during integration into ON Semiconductor systems. Confirm that the component meets RoHS compliance standards and check for any relevant Product Change Notices regarding assembly or wafer fab site modifications before finalizing procurement specifications.

Power Driver Modules Selection Notes

Select this module when designing compact motor drives requiring integrated high-voltage switching and logic-level compatibility. Ensure the application supports the required single supply voltage for the HVIC and accommodates the necessary bootstrap circuitry for high-side driving. Verify that the PCB layout allows for short, thick connections to minimize stray inductance and that thermal management strategies align with the specified junction-to-case thermal resistance values.

Power Driver Modules Part Context

This component belongs to the Motion SPM® 5 series, designed for high-performance inverter output stages. It combines power MOSFETs with high-speed HVICs to translate logic signals into high-current drive pulses. The series is engineered to reduce system complexity by integrating protection and drive functions into a single surface-mount package suitable for automated manufacturing processes.

Power Driver Modules Replacement Considerations

FSB50450AS is documented as a parameter-equivalent substitute.

Power Driver Modules FAQ

How does the module handle shoot-through prevention?

The module incorporates an internal blanking time of 1.0 µs to prevent arm-short conditions when both high-side and low-side signals are active simultaneously.

What is the recommended input logic level for operation?

The device features an active-HIGH interface compatible with 3.3 V and 5 V logic, utilizing Schmitt-trigger inputs to ensure signal integrity.

Are there provisions for external current sensing?

Yes, the module provides separate open-source pins from the low-side MOSFETs for each phase to facilitate three-phase current sensing.