45-V, 3.6-A H-bridge motor driver with fault reporting & current regulation
Product details
Parameters
Package | Pins | Size
Features
- H-Bridge Motor Driver
- Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
- Wide 6.5-V to 45-V Operating Voltage
- 565-mΩ Typical RDS(on) (HS + LS)
- 3.6-A Peak Current Drive
- PWM Control Interface
- Integrated Current Regulation
- Low-Power Sleep Mode
- Fault Status Output Pin
- 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)
- Fault Reporting (nFAULT)
- Automatic Fault Recovery
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Description
The DRV8872 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 DRV8872 device features integrated current regulation, based on an internal reference voltage and the voltage on pin ISEN, which is proportional to motor current through an external sense resistor. 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). Faults are communicated by pulling the nFAULT output low. When the fault condition is removed, the device automatically resumes normal operation.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | DRV8872 3.6-A Brushed DC Motor Driver With Fault Reporting (PWM Control) datasheet (Rev. C) | Jul. 05, 2016 |
Application note | Best Practices for Board Layout of Motor Drivers (Rev. A) | Jan. 22, 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 | |
User guide | DRV8872 Evaluation Module User's Guide | Aug. 21, 2015 | |
Application note | Calculating Motor Driver Power Dissipation | Feb. 06, 2012 | |
Application note | Understanding Motor Driver Current Ratings | Feb. 06, 2012 | |
Application note | PowerPAD™ Made Easy (Rev. B) | May 12, 2004 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The DRV8872 evaluation module (EVM) demonstrates the capabilities and performance of the DRV8872 integrated circuit from Texas Instruments. The EVM includes a 5V regulator and PWM generator. A single power source is required to evaluate the DRV8872.
Features
- 6.5V to 4.5V Operating Supply Voltage Range
- On board 5V regulator
- Adjustable PWM duty cycle
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SO PowerPAD (DDA) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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