The DRV8846RGET is a bipolar highly-integrated stepper Motor Driver with on-chip 1/32 microstepping indexer (step/direction control). It is designed projectors and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. It is capable of driving up to 1A full scale output current (with proper heat sinking and TA=25°C). A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that adaptive decay, slow decay, fast decay and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw.
- Sleep mode can be set using a dedicated nSLEEP pin
- UVLO, overcurrent, short-circuit protection and over-temperature protection
- Fault conditions are indicated via a nFAULT pin
- Thermal shutdown protection (TSD)
- Adaptive blanking time for smooth stepping
- Low-current sleep mode
- 3-bit Torque DAC to scale motor current
- Green product and no Sb/Br
电机驱动与控制, 计算机和计算机周边, 消费电子产品
