DRV8846/DRV8848 Dual H-Bridge Motor Driver

TI's DRV8846 and DRV8848 provide a dual H-bridge motor driver for home appliances and automated equipment applications

Image of Texas Instruments DRV8846/DRV8848 Dual H-Bridge Motor Driver Texas Instruments' DRV8846 provides a highly-integrated stepper motor driver for cameras, printers, 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- and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8846 is capable of driving up to 1 A full scale output current (with proper heatsinking and TA = 25°C).

The DRV8848 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits. The output block of each H-bridge driver consists of N- and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. Each H-bridge includes circuitry to regulate the winding current using a fixed off-time chopping scheme. The DRV8848 is capable of driving up to 2 A of current from each output or 4 A of current in parallel mode (with proper heat sinking, at 12 V and TA = 25°C).

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DRV8846 Features
  • PWM microstepping motor driver
    • Built-in microstepping indexer
    • Up to 1/32 microstepping
    • Step/direction control
  • Multiple decay modes: Adaptive, mixed, slow, and fast decay
  • Configurable off-time PWM chopping: 10-, 20-, or 30 μs off-time
  • Adaptive blanking time for smooth stepping
  • 4 V to 18 V operating supply voltage range
  • 1 A continuous/RMS output current per H-bridge (at 25°C)
DRV8848 Features
  • Dual H-bridge motor driver
    • Single/dual brushed DC
    • Stepper
  • PWM control interface
  • Optional current regulation with 20 µs fixed off-time
  • High output current per H-bridge
    • 2 A maximum driver current at 12 V and TA = 25°C
    • Parallel mode available capable of 4 A max driver current at 12 V and TA = 25°C

DRV8846/DRV8848 Dual H-Bridge Motor Driver

ImageManufacturer Part NumberDescriptionMotor Type - AC, DCInterfaceApplicationsAvailable Quantity
IC MOTOR DRIVER PAR 24VQFNDRV8846RGETIC MOTOR DRIVER PAR 24VQFN-Step/DirectionDC Motors, General Purpose, Stepper Motors0View Details
IC MTR DRV BIPOLR 4-18V 16HTSSOPDRV8848PWPIC MTR DRV BIPOLR 4-18V 16HTSSOPBrushed DCPWMDC Motors, General Purpose0View Details

Eval Board

ImageManufacturer Part NumberDescriptionFunctionEmbeddedPrimary AttributesAvailable Quantity
EVAL BOARD FOR DRV8846DRV8846EVMEVAL BOARD FOR DRV8846Motor Controller/Driver, StepperYes, MCU, 16-BitDual Full-Bridge (H-Bridge) Driver14 - ImmediateView Details
Published: 2015-03-17