Overview
The DRV8428PRTER, manufactured by Texas Instruments, is a highly integrated stepper motor driver designed for both industrial and consumer applications. This device combines two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing into a single package. With a maximum full-scale output current of 1A (dependent on PCB design), the DRV8428PRTER offers a compact and cost-effective solution for driving stepper motors. Its internal current sensing architecture eliminates the need for external power sense resistors, reducing PCB area and system costs. The device supports various step modes, from full step to 1/256 microstep, and features a low-power sleep mode for ultra-low standby current. Target users include engineers and designers in automation, robotics, and consumer electronics sectors, where precise motor control and energy efficiency are critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 4.2 to 33 | V | |
| Output Current | 1 | A | Full-scale |
| Operating Temperature | -40 to 125 | °C | |
| Step Resolution | Up to 1/256 | Microstep | |
| RDS(ON) | 1500 | mΩ | At 24V, 25°C |
| Sleep Current | 2 | µA | |
| Interface | STEP/DIR | ||
| Protection Features | UVLO, OCP, OTSD | Undervoltage Lockout, Overcurrent Protection, Thermal Shutdown |
Key Features
- Integrated current sensing eliminates the need for external resistors.
- Supports up to 1/256 microstepping for precise motor control.
- Low-power sleep mode for ultra-low standby current.
- Smart tune decay technology for optimized current regulation.
- Simple STEP/DIR interface for easy integration with external controllers.
- Comprehensive protection features including UVLO, OCP, and OTSD.
Applications
The DRV8428PRTER is ideal for a wide range of applications, including industrial automation, robotics, 3D printers, and consumer electronics. In industrial automation, it provides precise control for conveyor systems and robotic arms. In robotics, it enables smooth and accurate movement of robotic joints. For 3D printers, it ensures high-resolution printing by controlling stepper motors with microstepping precision. In consumer electronics, it is used in devices such as cameras and home appliances where compact design and energy efficiency are essential.
Q & A
1. What is the maximum output current of the DRV8428PRTER?
The DRV8428PRTER can drive up to 1A full-scale output current, depending on PCB design.
2. Does the DRV8428PRTER require external current sense resistors?
No, it features integrated current sensing, eliminating the need for external resistors.
3. What is the operating voltage range of the DRV8428PRTER?
It operates from 4.2V to 33V.
4. What step resolutions does the DRV8428PRTER support?
It supports step resolutions from full step to 1/256 microstep.
5. What is the standby current in sleep mode?
The standby current in sleep mode is 2µA.
6. What protection features are included?
It includes undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown (OTSD).
7. What is the RDS(ON) of the DRV8428PRTER?
The RDS(ON) is 1500mΩ at 24V and 25°C.
8. What is the typical application of the DRV8428PRTER?
It is commonly used in industrial automation, robotics, 3D printers, and consumer electronics.
9. Can the DRV8428PRTER be used with external controllers?
Yes, it features a simple STEP/DIR interface for easy integration with external controllers.
10. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
