Overview
The DRV8873SPWPR from Texas Instruments is an integrated driver IC designed for driving brushed DC motors in industrial applications. This device features an H-bridge driver controlled by two logic inputs, consisting of four N-channel MOSFETs that enable bi-directional motor drive with up to 10-A peak current. It operates from a single power supply with a wide input supply range of 4.5 V to 38 V. The DRV8873 supports both PH/EN or PWM interfaces for simple integration with controller circuits and offers independent half-bridge control for driving two solenoid loads.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Operating Voltage Range | 4.5 V to 38 V | Single power supply range |
| Peak Current Drive | 10 A | Maximum current the device can drive |
| Package Type | 24-pin HTSSOP PowerPAD™ | Package and footprint |
| Body Size | 7.70 mm × 4.40 mm | Dimensions of the package |
| Interface Options | SPI or Hardware Interface | Options for device configuration and control |
| Low-Power Sleep Mode | 10 µA | Quiescent current in sleep mode |
| Protection Features | UVLO, CPUV, OCP, Short-Circuit Protection, Open-Load Detection, Thermal Shutdown | Integrated protection functions |
Key Features
- Current Mirror: Allows the controller to monitor the load current without the need for a high-power resistor.
- Current Regulation: Features a fixed off-time current-chopping scheme, with the chopping level selectable via SPI or fixed in hardware versions.
- Protection Features: Includes undervoltage lockout, charge pump undervoltage, overcurrent protection, short-circuit protection, open-load detection, and thermal shutdown.
- Low-Power Sleep Mode: Achieves very-low quiescent current draw by shutting down much of the internal circuitry.
- Spread Spectrum Clocking: Minimizes radiated emissions from the device through spread spectrum clocking of the internal digital oscillator and charge pump.
- Fault Indication: Fault conditions indicated on the nFAULT pin and through SPI registers.
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 DRV8873SPWPR?
The operating voltage range is from 4.5 V to 38 V.
- What is the maximum peak current the DRV8873SPWPR can drive?
The maximum peak current is 10 A.
- What package type is the DRV8873SPWPR available in?
The device is available in a 24-pin HTSSOP PowerPAD™ package.
- What are the interface options for the DRV8873SPWPR?
The device supports both SPI and hardware interface options.
- What is the quiescent current in the low-power sleep mode?
The quiescent current in sleep mode is 10 µA.
- What protection features are integrated into the DRV8873SPWPR?
The device includes undervoltage lockout, charge pump undervoltage, overcurrent protection, short-circuit protection, open-load detection, and thermal shutdown.
- How does the DRV8873SPWPR monitor load current?
The device uses a current mirror to monitor the load current without the need for a high-power resistor.
- What is the purpose of the spread spectrum clocking feature?
The spread spectrum clocking feature minimizes radiated emissions from the device.
- How are fault conditions indicated in the DRV8873SPWPR?
Fault conditions are indicated on the nFAULT pin and through SPI registers.
- What are some typical applications of the DRV8873SPWPR?
Typical applications include ePOS and currency counters, ATMs, multi-function printers, laser beam printers, factory automation and robotics, motorized window blinds, and adjustable desks and beds.
