DRV8871-Q1

ACTIVE

Automotive 45-V, 3.6-A H-bridge motor driver with integrated current sensing

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Product details

Parameters

Number of full bridges 1 Vs (Min) (V) 6.5 Vs (Max) (V) 45 Peak output current (A) 3.7 RDS(ON) (HS + LS) (mOhms) 565 Sleep current (uA) 13 Control mode PWM Control interface Hardware (GPIO) Features Current Regulation, Integrated Current Sensing Rating Automotive open-in-new Find other Brushed DC (BDC) motor drivers

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Brushed DC (BDC) motor drivers

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • H-Bridge Motor Driver
    • Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
  • Wide 6.8-V to 45-V Operating Voltage
  • 565-mΩ Typical RDS(on) (HS + LS)
  • 3.6-A Peak Current Drive
  • PWM Control Interface
  • Current Regulation Without a Sense Resistor
  • Low-Power Sleep Mode
  • Small Package and Footprint
    • 8-Pin HSOP With PowerPAD™
    • 4.9 × 6 mm
  • Integrated Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Automatic Fault Recovery

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Description

The DRV8871-Q1 device is a brushed-DC motor driver for printers, appliances, industrial equipment, and other small machines. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that can control motors bidirectionally with up to 3.6-A peak current. The inputs can be pulse-width modulated (PWM) to control motor speed, using a choice of current-decay modes. Setting both inputs low enters a low-power sleep mode.

The DRV8871-Q1 device has advanced current-regulation circuitry that does not use an analog voltage reference or external sense resistor. This novel solution uses a standard low-cost, low-power resistor to set the current threshold. The ability to limit current to a known level can significantly reduce the system power requirements and bulk capacitance needed to maintain stable voltage, especially for motor startup and stall conditions.

The device is fully protected from faults and short circuits, including undervoltage (UVLO), overcurrent (OCP), and overtemperature (TSD). When the fault condition is removed, the device automatically resumes normal operation.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
NEW DRV8876-Q1 ACTIVE Automotive 37-V, 3.5A brushed DC motor driver with integrated current sensing & current sense output Supports configurable current regulation and lower sleep current. Integrated power sense resistor saves power, space and cost.

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet DRV8871-Q1 3.6-A Brushed DC Motor Driver With Internal Current Sense (PWM Control) datasheet Mar. 17, 2017
Application note Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A) Feb. 19, 2019
Application note Best Practices for Board Layout of Motor Drivers (Rev. A) Jan. 22, 2019
Application note Advantages of Integrated Current Sensing Jan. 07, 2019
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) Jul. 06, 2018
Technical articles Why are you still driving automotive motors with relays? Jul. 13, 2017
Technical articles The story of motor-drive integration Jan. 09, 2017
Technical articles How to create a dynamic power solution for stepper motors, relays and LEDs Nov. 01, 2016
Technical articles How to avoid motor and system overvoltage using AVS technology without external components Oct. 14, 2016
Application note PowerPAD™ Made Easy (Rev. B) May 12, 2004

Design & development

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Design tools & simulation

SIMULATION MODEL Download
SLVMCQ2A.ZIP (113 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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