This motor driver shield is a breakout board for two ST-Micro VNH3ASP30 full-bridge motor driver chips. Each chip incorporates a dual monolithic high-side driver and two low-side switches for full-bridge operation. The input signals INA and INB can directly interface with a microcontroller to select the motor direction and the brake condition. Pins DIAGA/ENA or DIAGB/ENB, when connected to an external pull-up resistor, enable one leg of the bridge. They also provide a feedback digital diagnostic signal. The CS pin monitors the motor current by delivering a current proportional to its value. The speed of the motor can be controlled in all possible conditions by the PWM up to 20kHz. In all cases, a low level state on the PWM pin will turn off both the LSA and LSB switches. When the PWM rises to a high level, LSA or LSB turn on again depending on the input pin state.
Features / Specs
- Main IC: ST-Micro VNH3ASP30
- Operating Voltage: 5.5V – 16VDC
- Max Continuous Output Current: 30A
- Practical Continuous Current (Max): 14A
- MOSFET RDS(On): 42mΩ (Per Leg)
- Max PWM Frequency: 20kHz
- Current-sense output proportional to motor current
- Very low standby power consumption
- 5V logic level compatible inputs
- Protection Features: Overvoltage Clamp; Undervoltage and Overvoltage Shutdown; Thermal Shutdown
- Compatible Arduino Boards: Arduino Uno R3 (Including Clones)
- Dimensions: ~(59.5mm x 53.2mm x 12.3mm)