Overview
The DRV8434ERGER is a highly integrated dual H-bridge motor driver produced by Texas Instruments. Designed for precision motor control applications, this component is part of the DRV8434 series, which is renowned for its advanced features such as integrated current sensing and Smart Tune technology. The DRV8434ERGER is specifically tailored for driving bipolar stepper motors and brushed DC motors, making it ideal for applications requiring high efficiency and compact design. Its market positioning targets industrial automation, robotics, and consumer electronics, offering a competitive edge with its low RDS(ON) and versatile control interfaces.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Operating Voltage | 4.5 to 48 | V | |
| Peak Current (Brushed) | 4 | A | |
| Full-Scale Current (Stepper) | 2.5 | A | |
| RDS(ON) (HS + LS) | 330 | mΩ | @ 24V, 25°C |
| Control Interfaces | PH/EN, PWM (IN/IN) | ||
| Microstepping | 1/256 | ||
| Current Sense Accuracy | ±4% | Full-scale | |
| Sleep Mode Current | 2 | µA | |
| Package | VQFN (24) | ||
| Protection Features | UVLO, CPUV, OCP, OTSD |
Key Features
- Integrated current sensing eliminates the need for external sense resistors.
- Smart Tune technology optimizes motor performance and reduces audible noise.
- Supports 1/256 microstepping for precise motor control.
- Low RDS(ON) ensures high efficiency and reduced power dissipation.
- Multiple control interface options (PH/EN, PWM) enhance flexibility.
- Comprehensive protection features ensure reliable operation.
Applications
The DRV8434ERGER is widely used in various applications, including:
- Industrial Automation: Precision control of conveyor belts, robotic arms, and CNC machines.
- Robotics: Efficient driving of stepper and DC motors in robotic systems.
- Consumer Electronics: Compact motor control in printers, scanners, and cameras.
- Automotive: Actuator and valve control in automotive systems.
Q & A
1. What is the operating voltage range of the DRV8434ERGER?
The DRV8434ERGER operates within a voltage range of 4.5V to 48V.
2. Does the DRV8434ERGER support microstepping?
Yes, it supports up to 1/256 microstepping for precise motor control.
3. What is the peak current capability for brushed DC motors?
The peak current capability is 4A for brushed DC motors.
4. What protection features are included?
It includes UVLO, CPUV, OCP, and OTSD for comprehensive protection.
5. Is external current sensing required?
No, the DRV8434ERGER features integrated current sensing.
6. What is the RDS(ON) of the DRV8434ERGER?
The RDS(ON) is 330mΩ at 24V and 25°C.
7. Can it drive both stepper and DC motors?
Yes, it is designed to drive both bipolar stepper motors and brushed DC motors.
8. What control interfaces are supported?
It supports PH/EN and PWM (IN/IN) control interfaces.
9. What is the sleep mode current consumption?
The sleep mode current is 2µA.
10. What package does the DRV8434ERGER use?
It is available in a VQFN (24) package.
