Targeting 48V Industrial Systems with 75V Motor Driver ICs

[Erkan Teskancan]

## Targeting 48V Industrial Systems with 75V Motor Driver Integrated Circuits

STMicroelectronics has introduced 75V motor control integrated circuits, suitable for various motor types and supporting up to 500W, for use in automation and electromechanical equipment.

Modern motion control systems often prefer 24V and 48V chassis architectures, especially in robotics, material handling, and smart equipment. Addressing this need, STMicroelectronics offers the STSPIN9P series of 75V motor driver ICs.

### Flexible Platform with Multi-Motor Support

The STSPIN9P family includes 12 different models for various motor types and power requirements up to 500W. Half-bridge (STSPIN9P1) and full-bridge (STSPIN9P2) versions are designed for applications such as industrial automation, robotics, white goods, pumps, fans, textile machinery, and stage lighting.

### Technical Specifications

• Supply voltage range: 7 V - 75 V, operating directly from the main power source
• Output current capability: 10 A
• Integrated charge pump for high-side driver with 100% duty cycle
• Current sensing with analog front-end and configurable current threshold comparator
• Decay strategy selectable via external pin (fixed off-time or PWM chopping)
• Gate driver turn-on slew rate adjustment for efficiency and electromagnetic emission optimization
• Minimized dead time in full-bridge configurations
• Internal under and over voltage, over current, and over temperature protections
• Integrated temperature sensor for each MOSFET
• Open load detection, verifying motor connection when power stage is disabled

### Reference Hardware and Evaluation Boards

The EVLSPIN9P1-3PH reference design for BLDC and PMSM motor drivers combines three STSPIN9P12 half-bridge drivers to provide three-phase driver support. It supports both three-shunt and single-shunt current sensing topologies.

Additionally, single-shunt evaluation boards are available for each model: EVLSPIN9P11, EVLSPIN9P12, EVLSPIN9P15, and EVLSPIN9P16 for half-bridge; and EVLSPIN9P21, EVLSPIN9P22, EVLSPIN9P213, and EVLSPIN9P24 platforms for full-bridge.

These integrated circuits ensure reliability and minimize maintenance time in industrial motion systems, offering high performance in the digital supply chain.