25.2-V, 30-A High-speed sensorless (> 100 krpm) brushless DC motor drive reference design
TIDA-010031
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- 25.2-V, 30-A High-speed sensorless (> 100 krpm) brushless DC motor drive
(PDF 9046 KB)
15 Jan 2019
Description
This reference design is for high-speed sensorless trapezoidal control of 6–33.6 V DC-fed brushless DC (BLDC) motors up to 900 W and motor speeds of up to 180,000 rpm (verified up to 100,000 rpm). A costeffective smart microcontroller with a hardware detection of the commutation points accelerates the sensorless trapezoidal control using speed-adaptive Back EMF (BEMF) detection. The BLDC power stage is compact, optimized for efficiency, and fully protected against short circuit, motor stall, and overtemperature, due to the smart three-phase gate driver.
Features
- High-speed, sensorless trapezoidal control up to 3-kHz motor electrical frequency
- Speed-adaptive dual-algorithm for BEMF detection
- Operates at voltage ranging from 6 V to 33.6 V delivering up to 900-W output power, output current up to 30A RMS
- Standby current consumption as low as 22 µA
- Optimized FET switching for best efficiency and EMI
- Cycle-by-cycle overcurrent, motor stall and short-circuit latch protection by MOSFET VDS monitoring
See the Important Notice and Disclaimer covering reference designs and other TI resources.
