Taipei, Sunday, Jun 26, 2022, 05:01

Technology Front

ST Trims Brushless Motor-Control Designs with Gate-Driver IC Optimized for Low-Voltage Applications

Published: Jan 20,2021

12112 Read

STMicroelectronics has created an integrated three-phase half-bridge driver IC with performance optimized for low-voltage industrial applications up to 75V, delivering a space-efficient and power-saving solution to control three-phase brushless motors in e-bikes, power tools, pumps, fans, light machinery, gaming consoles, and other equipment.

More on This

ST collaborates with Microsoft to Streamline Development of Secure IoT

STMicroelectronics has revealed details of its collaboration with Microsoft, an ST Authorized partner, to strengthen the...

STMicroelectronics and Feig Collaborate on Contactless Product Personalization

STMicroelectronics and Feig Electronic have combined their RFID know-how in a time-saving logistics solution that can he...

The STDRIVE101 embeds three half-bridge drivers for external N-Channel MOSFETs, each able to sink and source up to 600mA gate current. Integrated bootstrap diodes and a 50mA 12V low-dropout (LDO) regulator ready to supply external components help designers minimize the bill of materials. A comparator for over-current detection using external resistors and drain-source voltage monitoring of each MOSFET for short-circuit protection are also provided.

Essential safety features are built-in, including internally generated dead-time to prevent cross-conduction, over-temperature shutdown, and Under-Voltage Lockout (UVLO) on both the low-side and high-side sections to prevent the MOSFETs from operating in low efficiency or dangerous conditions.

A DT/MODE selection pin lets designers choose to control switching with individual high-side and low-side signals or a single PWM signal and enable input. A standby pin sets the STDRIVE101 in low-power mode with the LDO turned off to maximize energy savings when idle.

The STDRIVE101 is in production now and available in a 24-pin VFQFN 4mm x 4mm package.

comments powered by Disqus