Overview
The DRV8834PWPR, produced by Texas Instruments, is a versatile dual H-bridge motor driver designed to drive either two DC motors or one bipolar stepper motor. This device is particularly suited for applications in toys, printers, cameras, and other mechatronic systems. It features two control modes: a built-in indexer logic with simple STEP/DIRECTION control and up to 1/32-step microstepping, as well as PHASE/ENABLE control for external references beyond 1/32-step microstepping. The DRV8834PWPR is known for its high current capability, low RDS(ON), and wide power supply voltage range, making it a robust solution for various motor control needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current (Continuous) | 1.5 A | A |
| Output Current (Peak) | 2.2 A | A |
| Power Supply Voltage Range | 2.5 V to 10.8 V | V |
| RDS(ON) | 305 mΩ (HS + LS) | mΩ |
| Microstepping Resolutions | Full-step, half-step, 1/4-step, 1/8-step, 1/16-step, 1/32-step | |
| Package Type | 24-pin HTSSOP or VQFN with PowerPAD™ | |
| Thermal Shutdown Temperature | 150°C to 180°C | °C |
Key Features
- Dual H-bridge current-control motor driver capable of driving two DC motors or one bipolar stepper motor.
- Two control modes: built-in indexer logic with simple STEP/DIRECTION control and PHASE/ENABLE control for external references beyond 1/32-step microstepping.
- Adjustable current control with PWM winding current regulation and limiting.
- Dynamic and mixed decay modes for smooth microstepping.
- Internal shutdown functions for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
- Low-power sleep mode and thermally enhanced surface-mount package.
- Compatible with 3.3 V and 5 V systems, and includes a built-in regulator eliminating the need for an external logic voltage supply.
Applications
- Battery-powered toys.
- POS printers.
- Video security cameras.
- Office automation machines.
- Gaming machines.
- Robotics.
Q & A
- What is the maximum continuous output current of the DRV8834PWPR?
The maximum continuous output current is 1.5 A per H-bridge at 25°C with a VM supply of 5 V.
- What are the available microstepping resolutions for the DRV8834PWPR?
The available microstepping resolutions are full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step.
- What is the power supply voltage range for the DRV8834PWPR?
The power supply voltage range is from 2.5 V to 10.8 V.
- Does the DRV8834PWPR have built-in protection features?
Yes, it includes overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
- What package types are available for the DRV8834PWPR?
The device is available in 24-pin HTSSOP or VQFN packages with PowerPAD™.
- Can the DRV8834PWPR be used with both 3.3 V and 5 V systems?
Yes, it is compatible with both 3.3 V and 5 V systems.
- What is the thermal shutdown temperature range for the DRV8834PWPR?
The thermal shutdown temperature range is from 150°C to 180°C.
- Does the DRV8834PWPR have a low-power sleep mode?
Yes, it includes a low-power sleep mode.
- How does the DRV8834PWPR regulate winding current?
The device includes circuitry to regulate or limit the winding current, with PWM winding current regulation and limiting.
- What kind of decay modes does the DRV8834PWPR support for microstepping?
The device supports dynamic and mixed decay modes for smooth microstepping.
