New motor drivers from TI for stepper, brushed DC motors handle up to 5 Amps

Texas Instruments Incorporated (TI) 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. TI says the new DRV8x motor drivers provide RDS (ON) of 100 milliohms, 60 percent 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.

Key features and benefits:
Bipolar stepper motor drivers: 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. Supports 1/256 and greater microstepping, along with slow, mixed and fast decay modes, for smooth, quiet, high-resolution motion profiles in applications such as printers, scanners, security cameras, cash handlers, medical equipment and factory automation.
Brushed DC motor drivers: 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 start-up 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.
Advanced on-chip protection includes over-current, over-temperature, shoot-through and under-voltage lockout.
DRV8x motor drivers integrate the gate drive circuitry, MOSFETs, protection circuitry and current regulation circuitry.
Pin-for-pin compatibility with existing DRV8x motor drivers provides flexibility for high or low current.

New additions to the DRV8x motor driver family include:
Bipolar stepper motor drivers
DRV8813: Up to 2.5 A with four levels of current regulation and a PH/EN control interface.
DRV8825: Up to 2.5 A with on-chip indexer supporting up to 32 microsteps.
DRV8829: Up to 5 A with 32 levels of current regulation and a PH/EN control interface; two DRV8829 devices are required to drive a single 5-A bipolar stepper motor.
Brushed DC motor drivers
DRV8814: Supports two 2.5-A brushed DC motors with cycle-by-cycle inrush protection and a PH/EN control interface.
DRV8840: Up to 5 A with cycle-by-cycle inrush protection and a PH/EN control interface.
Bipolar stepper or brushed DC motor drivers
DRV8841: Supports a single 2.5-A bipolar stepper motor or two 2.5-A brushed DC motors with four levels of current regulation, cycle-by-cycle inrush protection and a PWM control interface supporting brake.
DRV8842: Supports a single 5-A brushed DC motor; two DRV8842 devices can also be used to drive a single 5-A bipolar stepper motor; includes 32 level of current regulation, cycle-by cycle inrush protection and a PWM control interface supporting brake.
DRV8843: Supports a single 2.5-A bipolar stepper motor or two 2.5-A brushed DC motors with four levels of current regulation, cycle-by-cycle inrush protection and a PWM control interface supporting brake and coast.

Availability: Now
Package: 9.7 mm x 6.4 mm HTSSOP package
Pricing: All are priced at $2.25 in 1,000-unit quantities with the exception of the DRV8825, which is available for $2.40 for 1,000 units.

For more information visit www.ti.com