Texas Instruments has expanded its DRV8x motor driver family with eight new devices supporting up to 5 A for higher-current bipolar stepper and brushed DC motors.
The new motor drivers provide RDSon as low as 100 milliohms, more than 60% less than the previous generation, enabling higher current and better thermal performance. Microstepping options within the family include up to 256 microsteps and greater with an external microcontroller, or up to 32 microsteps with an on-chip indexer.
Bipolar stepper motor drivers are available in 2,5 A to 5 A peak current options and control interfaces for phase-enable (PH/EN), step/direction with indexer and pulse-width modulation (PWM) control. Their support for 1/256 and greater microstepping, along with slow, mixed and fast decay modes, provide smooth, quiet, high-resolution motion profiles in applications such as printers, scanners, security cameras, cash handlers, medical equipment and factory automation.
The brushed DC motor drivers are also provided in 2,5 A to 5 A peak current options and control interfaces for PH/EN and PWM control. On-chip cycle-by-cycle inrush protection limits startup and stall currents, protecting the driver and reducing overall system cost in a variety of applications, such as printers, robotics, toys, servo motors, textile manufacturing equipment, solenoid valves and consumer electronics.
All devices include over-current, over-temperature and shoot-through protection, as well as under-voltage lock-out.
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