Overview
The DRV8424RGER, produced by Texas Instruments, is a highly integrated stepper motor driver designed for both industrial and consumer applications. This device features two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing capabilities. It is capable of driving bipolar stepper motors with high precision and efficiency.
The DRV8424RGER supports a wide operating supply voltage range of 4.5 to 33 V and can deliver up to 4 A peak, 2.5 A full-scale, and 1.8 A root mean square (rms) output current. The device is known for its simple STEP/DIR interface, allowing external controllers to manage the direction and step rate of the stepper motor with ease.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VQFN (24) |
| Operating Temperature Range (°C) | -40 to 125 |
| Operating Supply Voltage Range (V) | 4.5 to 33 |
| Peak Output Current (A) | 4 |
| Full-Scale Output Current (A) | 2.5 |
| RMS Output Current (A) | 1.8 |
| RDS(ON) (mΩ) at 24 V, 25°C | 330 (HS + LS) |
| Microstepping Capability | Full-step to 1/256 |
| Logic Input Voltage (V) | 1.8, 3.3, 5.0 |
| Sleep Mode Current (µA) | 2 |
| Protection Features | Undervoltage lockout, overcurrent protection, thermal shutdown, fault condition output |
Key Features
- PWM microstepping stepper motor driver with up to 1/256 microstepping indexer
- Simple STEP/DIR interface for easy control of stepper motor direction and step rate
- Integrated current sense functionality with ±5% full-scale current accuracy, eliminating the need for external sense resistors
- Smart tune decay technology, fixed slow, and mixed decay options for optimal current regulation and reduced motor noise
- Low RDS(ON) of 330 mΩ (HS + LS) at 24 V, 25°C
- High current capacity per bridge: 4 A peak, 2.5 A full-scale, 1.8 A rms
- Pin-to-pin compatible with DRV8426, DRV8436, and DRV8434
- Low-current sleep mode (2 µA) and spread spectrum clocking for low electromagnetic interference (EMI)
- Protection features include undervoltage lockout, overcurrent protection, thermal shutdown, and fault condition output
Applications
The DRV8424RGER is suitable for a wide range of applications, including:
- Industrial automation systems
- Consumer electronics such as 3D printers and CNC machines
- Medical devices requiring precise motor control
- Automotive systems where robust and efficient motor control is necessary
- Any application requiring high-precision bipolar stepper motor control
Q & A
- What is the operating supply voltage range of the DRV8424RGER?
The operating supply voltage range is 4.5 to 33 V.
- What is the maximum peak output current of the DRV8424RGER?
The maximum peak output current is 4 A.
- Does the DRV8424RGER require external sense resistors?
No, it uses an internal current sense architecture, eliminating the need for external sense resistors.
- What microstepping capabilities does the DRV8424RGER support?
It supports full-step to 1/256 microstepping.
- What protection features are included in the DRV8424RGER?
The device includes undervoltage lockout, overcurrent protection, thermal shutdown, and fault condition output.
- How does the smart tune decay technology benefit the motor operation?
Smart tune decay technology automatically adjusts for optimal current regulation, compensates for motor variation and aging effects, and reduces audible noise from the motor.
- What is the sleep mode current of the DRV8424RGER?
The sleep mode current is 2 µA.
- Is the DRV8424RGER compatible with other Texas Instruments stepper motor drivers?
Yes, it is pin-to-pin compatible with DRV8426, DRV8436, and DRV8434.
- What logic input voltages are supported by the DRV8424RGER?
The device supports 1.8-V, 3.3-V, and 5.0-V logic inputs.
- How does the spread spectrum clocking feature benefit the system?
The spread spectrum clocking feature helps in reducing electromagnetic interference (EMI).
