FSB70450

Power Driver Modules Overview

The FSB70450 is a Smart Power Module (SPM) from onsemi, designed for high-performance inverter output stages. It integrates three-phase MOSFETs with gate drivers and protection circuits. Key electrical parameters include a drain-source voltage of 500 V, a continuous collector current of 4.8 A, and an on-resistance of 1.9 ohms. The module features 1500 Vrms isolation voltage between power and control terminals. It operates within a junction temperature range of -40°C to 150°C and is housed in a PQFN package.

Power Driver Modules Feature Summary

• Integrates three-phase MOSFETs with intelligent gate drivers for simplified motor drive design
• Provides galvanic isolation of 1500 Vrms between power circuitry and control signals
• Includes built-in protection mechanisms such as overcurrent and thermal shutdown
• Optimized for compact PCB layouts using surface-mount PQFN packaging

Power Driver Modules Applications

• AC induction motor drives
• Brushless DC (BLDC) motor control systems
• Permanent Magnet Synchronous Motor (PMSM) inverters
• Industrial automation servo drives
• Home appliance variable speed motors

Power Driver Modules Procurement Notes

Verify the specific datasheet revision and ordering part number suffixes to ensure compatibility with required thermal and electrical specifications. Confirm that the procurement source provides original manufacturer documentation or authorized distribution channels. Check for RoHS compliance status and any specific handling requirements related to the sensitive internal gate driver circuitry during assembly processes.

Power Driver Modules Selection Notes

Select this module when a compact, integrated solution for three-phase motor control is required. It is suitable for applications demanding 500V blocking capability and approximately 5A current handling. Consider the thermal performance of the PQFN package and the need for external heat sinking based on the expected duty cycle and ambient temperature conditions of the target application environment.

Power Driver Modules Part Context

The FSB70450 belongs to onsemi's Motion SPM family of intelligent power modules. These modules are engineered to reduce system complexity by combining power switches and drivers into a single component. This integration helps minimize parasitic inductances and improves switching performance compared to discrete solutions, making it a preferred choice for modern efficient motor drive architectures.

Power Driver Modules Replacement Considerations

Direct replacements should be sought within the onsemi SPM series with matching voltage and current ratings. Verify pin-to-pin compatibility if substituting with other models in the same package family. Ensure that the alternative device supports the same control interface timing and protection thresholds required by the existing design.

Power Driver Modules FAQ

What is the isolation voltage rating of the FSB70450?

The module provides an isolation voltage of 1500 Vrms between the power stage and the control terminals.

Does the FSB70450 include internal protection features?

Yes, it includes integrated protection functions such as overcurrent detection and thermal shutdown to safeguard the motor and the module itself.