EVLDRIVE102BH

EVLDRIVE102BH is a STDRIVE102BH evaluation board for three-phase brushless motors. The power stage uses a three-shunt topology: the current sensing and the overcurrent protections are implemented using the three operational amplifiers and the three comparators embedded in the STDRIVE102BH. The evaluation board is thermally protected by exploiting both the hardware thermal shutdown protection embedded in the STDRIVE102BH and also an onboard NTC sensor placed close to the power stage, for a firmware thermal protection. The two diagnostic pins of the STDRIVE102BH, the nFAULT pin for the protection events and the FLAG pin for the drivers’ supply warning, are both connected to the control board and are also visible through two different LED indicators. The evaluation board can support FOC and six-step motion control algorithms. In case the motor is equipped with positioning sensors, they can be connected to the connector for Hall-effect based sensors and for the encoder.

• Operating voltage from 6V to 50V
• O/P current up to 12Arms: power stage based on STL220N6F7 60V, 1.2mohm N-channel power MOSFETs
• STDRIVE102BH triple half-bridge gate driver: programmable gate current (up to 1A source/2A sink)
• Charge pump for 100% duty cycle operation
• 3 embedded operational amplifiers and 3 comparators for current sensing and overcurrent detection
• Full set of protections: UVLO, thermal shutdown, VDS monitoring
• Input connector for Hall-effect based sensors and encoder
• Motor BEMF sensing network
• Bus voltage sensing, NTC temperature sensing
• Morpho connectors compatible with a wide range of STM32 NUCLEO boards