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DRV8874

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38-V, 6-A H-bridge motor driver with integrated current sensing & feedback

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Product details

Parameters

Number of full bridges 1 Vs (Min) (V) 4.5 Vs (Max) (V) 37 Peak output current (A) 6 RDS(ON) (HS + LS) (mOhms) 200 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface Hardware (GPIO) Features Current Sense Amplifier, Integrated Current Sensing Approx. price (US$) 1.15 | 1ku Rating Catalog open-in-new Find other Brushed DC (BDC) motor drivers

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other Brushed DC (BDC) motor drivers

Features

  • N-channel H-bridge motor driver
    • Drives one bidirectional brushed DC motor
    • Two unidirectional brushed DC motors
    • Other resistive and inductive loads
  • 4.5-V to 37-V operating supply voltage range
  • Pin to pin RDS(on) variants
    • DRV8874: 200-mΩ (High-Side + Low-Side)
    • DRV8876: 700-mΩ (High-Side + Low-Side)
  • High output current capability
    • DRV8874: 6-A Peak
    • DRV8876: 3.5-A Peak
  • Integrated current sensing and regulation
  • Proportional current output (IPROPI)
  • Selectable current regulation (IMODE)
    • Cycle-by-cycle or fixed off time
  • Selectable input control modes (PMODE)
    • PH/EN and PWM H-bridge control modes
    • Independent half-bridge control mode
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Ultra low-power sleep mode
    • <1-µA @ VVM = 24-V, TJ = 25°C
  • Spread spectrum clocking for low electromagnetic interference (EMI)
  • Integrated protection features
    • Undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
      • Automatic retry or outputs latched off (IMODE)
    • Thermal shutdown (TSD)
    • Automatic fault recovery
    • Fault indicator pin (nFAULT)

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Description

The DRV8874 is an integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. The family of devices come in pin-to-pin RDS(on) variants to support different loads with minimal design changes.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the external voltage reference pin, VREF, these devices can regulate the motor current during start-up and high-load events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, charge pump undervoltage, output overcurrent, and device overtemperature. Fault conditions are indicated on nFAULT.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$59.00
Description

The DRV8874 evaluation module (EVM) allows easy evaluation of the DRV8874 device.

The DRV8874 device is an integrated H-bridge driver for brushed DC and solenoid applications. The evaluation module allows the device to be configured for PWM, phase/enable, or independent half-bridge control modes. An (...)

Features
  • 4.5-V to 37-V operating voltage range
  • 6-A peak current
  • Configurable control modes including PH/EN, PWM, and independent half-bridge
  • Integrated current sense and current regulation

Software development

SUPPORT SOFTWARE Download
SLVC747B.ZIP (79 KB)

Design tools & simulation

SIMULATION MODELS Download
SLVMCX0A.ZIP (112 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

Support & training

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Videos

How to use integrated current sensing in brushed DC motors

Learn what current sensing is used for in brushed DC motors, how to implement a motor driver with integrated current sensing and how it works.

Posted: 05-Jan-2016
Duration: 03:29

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