Overview
The DRV8841PWPR, produced by Texas Instruments, is a versatile and integrated motor driver solution designed for driving various types of motors and loads. This device is a 45-V, 2.5-A bipolar stepper or dual H-bridge motor driver IC, featuring current regulation and PWM control. It is suitable for applications such as printers, scanners, office automation machines, gaming machines, factory automation, and robotics. The DRV8841 provides a simple PWM interface for easy interfacing with external digital controllers and integrates protection features for reliable operation.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Maximum Drive Current | 2.5 A (peak), 1.75 A (RMS) | At 24 V, TA = 25°C |
| Operating Supply Voltage Range | 8.2 V to 45 V | |
| MOSFET On-Resistance (RDS(ON)) | 400 mΩ (combined high-side and low-side) | At 24 V, TA = 25°C |
| Current Regulation | Optional Fixed Frequency, Two Bit Current Control for up to Four Current Levels | |
| Protection Features | Overcurrent Protection (OCP), Thermal Shutdown (TSD), Undervoltage Lockout (UVLO), Fault Condition Indication Pin (nFAULT) | |
| Package Type | HTSSOP (28 pins) | 9.70 mm × 4.40 mm |
| Low Power Sleep Mode | Yes, via nSLEEP pin | |
| Built-In Reference Output | 3.3 V |
Key Features
- Dual H-Bridge DC Motor Driver capable of driving one or two brushed DC motors or a bipolar stepper motor.
- PWM Control Interface for easy interfacing with external digital controllers.
- Low MOSFET On-Resistance for efficient operation.
- Optional Fixed Frequency Current Regulation and Two Bit Current Control allowing up to four current levels.
- Low Current Sleep Mode to minimize quiescent current draw, controlled via the nSLEEP pin.
- Built-In 3.3-V Reference Output.
- Thermally Enhanced Surface Mount Package.
- Internal protection features including Overcurrent Protection (OCP), Thermal Shutdown (TSD), Undervoltage Lockout (UVLO), and Fault Condition Indication Pin (nFAULT).
Applications
- Printers and scanners.
- Office automation machines.
- Gaming machines.
- Factory automation.
- Robotics and other automated equipment.
Q & A
- What is the maximum drive current of the DRV8841PWPR?
The maximum drive current is 2.5 A (peak) or 1.75 A (RMS) at 24 V and TA = 25°C.
- What is the operating supply voltage range of the DRV8841PWPR?
The operating supply voltage range is from 8.2 V to 45 V.
- What types of motors can the DRV8841PWPR drive?
The DRV8841PWPR can drive one or two brushed DC motors, a bipolar stepper motor, or other loads.
- Does the DRV8841PWPR have built-in protection features?
Yes, it includes Overcurrent Protection (OCP), Thermal Shutdown (TSD), Undervoltage Lockout (UVLO), and a Fault Condition Indication Pin (nFAULT).
- How is the sleep mode controlled in the DRV8841PWPR?
The sleep mode is controlled via the dedicated nSLEEP pin.
- What is the package type and size of the DRV8841PWPR?
The package type is HTSSOP with 28 pins, and the size is 9.70 mm × 4.40 mm.
- Does the DRV8841PWPR have a built-in reference output?
Yes, it has a built-in 3.3-V reference output.
- What is the significance of the nFAULT pin in the DRV8841PWPR?
The nFAULT pin indicates fault conditions such as overtemperature, overcurrent, and undervoltage.
- Can the DRV8841PWPR be used in robotics applications?
Yes, it is suitable for robotics and other automated equipment applications.
- How does the DRV8841PWPR regulate current?
The DRV8841PWPR offers optional fixed frequency current regulation and two-bit current control allowing up to four current levels.
