Overview
The DRV8847PWPR from Texas Instruments is a dual H-bridge motor driver designed for a variety of applications including industrial, home appliances, electronic point-of-sale (ePOS) printers, and other mechatronic systems. This device is capable of driving two DC motors, a bipolar stepper motor, or other loads such as relays and solenoids. It operates off a single power supply with a wide input voltage range of 2.7 to 18 volts and features a simple PWM interface for easy control by a microcontroller.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2.7 to 18 | V |
| RMS Driver Current per H-Bridge | 1 A (2 A in parallel mode) | A |
| On-State Resistance (RDS(ON)) | 1000 mΩ at VM > 5 V | mΩ |
| Sleep Mode Supply Current | 1.7 µA at VVM = 12 V, TA = 25°C | µA |
| Logic Input Voltage | 1.8 V, 3.3 V, 5 V | V |
| Package Options | 16 Pin TSSOP, 16 Pin HTSSOP PowerPAD™, 16 Pin WQFN | |
| Operating Ambient Temperature | -40 to 85 | °C |
| Operating Junction Temperature | -40 to 150 | °C |
Key Features
- Dual H-bridge motor driver for driving two DC motors, a bipolar stepper motor, or other loads like relays and solenoids.
- Multiple control interface options: 4-pin, 2-pin, parallel bridge, and independent bridge interfaces.
- Current regulation with 20-µs fixed off-time and torque scalar for scaling output current to 50%.
- Built-in protection features: undervoltage lockout, overcurrent protection, open-load detection, thermal shutdown, and fault condition indication pin (nFAULT).
- Low-power sleep mode with 1.7-µA supply current at VVM = 12 V, TA = 25°C.
- I2C device variant (DRV8847S) with detailed diagnostics and multi-slave operation support.
- Small packages and footprints: 16 Pin TSSOP, 16 Pin HTSSOP PowerPAD™, and 16 Pin WQFN.
Applications
- Industrial applications
- Home appliances (e.g., refrigerators, washers, dryers, dishwashers)
- Electronic point-of-sale (ePOS) printers
- Stage lighting equipment
- Miniature circuit breakers and smart meters
Q & A
- What is the operating voltage range of the DRV8847PWPR?
The operating voltage range is from 2.7 to 18 volts. - What types of motors can the DRV8847PWPR drive?
The device can drive two DC motors, a bipolar stepper motor, or other loads such as relays and solenoids. - What are the key protection features of the DRV8847PWPR?
The device includes undervoltage lockout, overcurrent protection, open-load detection, thermal shutdown, and a fault condition indication pin (nFAULT). - What is the sleep mode supply current of the DRV8847PWPR?
The sleep mode supply current is 1.7 µA at VVM = 12 V, TA = 25°C. - Does the DRV8847PWPR support I2C communication?
Yes, the I2C device variant (DRV8847S) supports I2C communication with detailed diagnostics and multi-slave operation. - What are the package options available for the DRV8847PWPR?
The device is available in 16 Pin TSSOP, 16 Pin HTSSOP PowerPAD™, and 16 Pin WQFN packages. - What is the maximum RMS driver current per H-bridge?
The maximum RMS driver current per H-bridge is 1 A (2 A in parallel mode with proper heat sinking at TA = 25°C). - Can the DRV8847PWPR be used in low-power applications?
Yes, the device features a low-power sleep mode to reduce power consumption. - What is the on-state resistance of the DRV8847PWPR?
The on-state resistance (RDS(ON)) is 1000 mΩ at VM > 5 V. - What are the logic input voltage levels supported by the DRV8847PWPR?
The device supports 1.8 V, 3.3 V, and 5 V logic input voltages.
