Overview
The DRV8873HPWPR from Texas Instruments is an integrated H-Bridge motor driver designed for driving brushed DC motors, stepper motors, or solenoid loads in industrial applications. This device operates from a single power supply with a wide voltage range of 4.5 V to 38 V and can drive motors bi-directionally with up to 10-A peak current. The DRV8873 features low RDS(ON) N-channel MOSFETs, reducing power losses and enhancing efficiency. It supports various control interfaces, including PH/EN, PWM, and independent half-bridge control, making it versatile for different application needs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 4.5 | 38 | V | |
| Peak Current Drive | 10 | A | ||
| RDS(ON) at TJ = 25°C, 13.5 V | 150 | mΩ | ||
| RDS(ON) at TJ = 150°C, 13.5 V | 250 | mΩ | ||
| Logic Level Input Voltage | 0 | 5.5 | V | |
| Operating Ambient Temperature | -40 | 125 | °C | |
| Operating Junction Temperature | -40 | 150 | °C | |
| Junction-to-Ambient Thermal Resistance | 27.8 | °C/W |
Key Features
- Drives one DC motor, one winding of a stepper motor, or solenoid loads
- Configurable control interface: PH/EN, PWM, and independent half-bridge control
- Supports 1.8-V, 3.3-V, 5-V logic inputs
- SPI or hardware interface options
- Low-power sleep mode (10 µA)
- Current mirror for output current sensing
- Protection features: VM undervoltage lockout, charge pump undervoltage, overcurrent protection, output short to battery and ground protection, open-load detection, and thermal shutdown
- Small package and footprint: 24-pin HTSSOP PowerPAD™ IC package
- Spread spectrum clocking to minimize radiated emissions
Applications
- ePOS and currency counters
- ATMs (Automated Teller Machines)
- Multi-function printers
- Laser beam printers
- Factory automation and robotics
- Motorized window blinds
- Adjustable desks and beds
Q & A
- What is the operating voltage range of the DRV8873HPWPR?
The operating voltage range is from 4.5 V to 38 V.
- What is the peak current drive capability of the DRV8873HPWPR?
The device can drive up to 10-A peak current.
- What types of control interfaces does the DRV8873HPWPR support?
The device supports PH/EN, PWM, and independent half-bridge control interfaces.
- Does the DRV8873HPWPR have built-in protection features?
Yes, it includes VM undervoltage lockout, charge pump undervoltage, overcurrent protection, output short to battery and ground protection, open-load detection, and thermal shutdown.
- What is the package type and size of the DRV8873HPWPR?
The device is available in a 24-pin HTSSOP package with a thermal pad, measuring 7.70 mm × 4.40 mm.
- How does the DRV8873HPWPR manage current sensing?
The device uses a current mirror to provide an output current proportional to the current through the high-side FETs, eliminating the need for a high-power resistor.
- What is the purpose of the spread spectrum clocking feature in the DRV8873HPWPR?
The spread spectrum clocking feature minimizes radiated emissions from the device.
- Can the DRV8873HPWPR be used in low-power applications?
Yes, the device has a low-power sleep mode that reduces the quiescent current to 10 µA.
- How are fault conditions indicated in the DRV8873HPWPR?
Fault conditions are indicated by the nFAULT pin and through the SPI registers.
- What are some typical applications of the DRV8873HPWPR?
Typical applications include ePOS and currency counters, ATMs, multi-function printers, laser beam printers, factory automation, robotics, motorized window blinds, and adjustable desks and beds.
