DRV8311S
Overview
The DRV8311 provides three integrated MOSFET half-H-bridges for driving a three-phase brushless DC (BLDC) motor for 5-V, 9-V, 12-V, or 18-V DC rails or 1S to 4S battery powered applications. The device integrates three current-sense amplifiers (CSA) with integrated current sense for sensing the three phase currents of BLDC motors to achieve optimum FOC and current-control system implementation.
- Three-phase PWM motor driver - 3-Phase brushless DC motors
- 3-V to 20-V operating voltage - 24-V Absolute maximum voltage
- High output current capability - 5-A Peak current drive
- Low on-state resistance MOSFETs - 210-mΩ typ RDS(ON) (HS + LS) at TA = 25°C
- Low power sleep mode - 1.5-µA at VVM = 12-V, TA = 25°C
- Multiple control interface options - 6x PWM control interface - 3x PWM control interface - PWM generation mode (SPI/tSPI) with optional calibration between MCU and DRV8311
- tSPI interface (DRV8311P) - PWM duty and frequency update over SPI - Control multiple DRV8311P devices using standard 4-wire SPI interface
- Supports up to 200-kHz PWM frequency
- Integrated current sensing - No external resistor required - Sense amplifier output, one per 1/2-bridge
- SPI and hardware device variants - 10-MHz SPI communication (SPI/tSPI)
