Texas Instruments DRV8873-Q1 | Demoboard DRV8873S-Q1EVM

Description

The DRV8873-Q1 device is an integrated driver IC for driving a brushed DC motor in automotive applications. Two logic inputs control the H-bridge driver,which consists of four N-channel MOSFETs that drive motors bi-directionally with up to 10-A peak current. The device operates from a single power supply and supports a wide input supply range from 4.5 V to 38 V. A PH/EN or PWM interface allows simple interfacing to controller circuits. Alternatively, independent half-bridge control is available to drive two solenoid loads. Integrated current sensing provides an output current proportional to the motor load current of both hide-side FETs without the need for high-power sense resistors. This can be used to detect motor stall or change in load conditions. A low-power sleep mode is provided to achieve very-low quiescent current draw by shutting down much of the internal circuitry. Internal protection functions are provided for under voltage lockout,charge pump faults, overcurrent protection,short-circuit protection,open-load detection,and over temperature. Fault conditions are indicated on an n FAULT pin and through the SPI registers.

Features

• AEC-Q100 qualified for automotive applications
• Device temperature grade 1: –40°C to +125°C, TA
• N-channel H-bridge motor driver
• Drives one bidirectional brushed DC motor
• Two unidirectional brushed DC motors
• Solenoids or other resistive and inductive loads
• 4.5-V to 38-V Operating voltage range
• 10-A Peak current drive
• Low HS + LS RDS(ON)
• 150 mΩ at TJ = 25°C, 13.5 V
• 250 mΩ at TJ = 150°C, 13.5 V
• Integrated current sensing
• Proportional current output (IPROPI)
• Configurable control interface
• PH/EN
• PWM (IN1/IN2)
• Independent half-bridge control
• Supports 1.8-V,3.3-V, 5-V logic inputs
• SPI or hardware interface options
• Small package and footprint
• 24 HTSSOP Power PAD™ IC package
• Protection features
• VM under voltage lockout (UVLO)
• Charge pump under voltage (CPUV)
• Overcurrent protection (OCP)
• Output short to battery and short to ground protection
• Open load detection
• Thermal shutdown (TSD)
• Fault condition output (nFAULT / SPI)
• Spread spectrum clocking for low electromagnetic interference (EMI)
• Functional Safety-Capable
• Documentation available to aid functional safety system design

Typical applications

• Electronic throttle control, Exhaust gas recirculation, Side-view mirror tilt, e-Shifter, Air-flow diverter valve control

More information

• Datasheet
• IC product information