Overview
The DRV8231A, specifically the DRV8231ADDAR model, is an integrated motor driver produced by Texas Instruments. This device is designed to drive brushed DC motors and features an N-channel H-bridge configuration along with a charge pump, current sense feedback, and current regulation. It operates within a supply voltage range of 4.5-V to 33-V and supports high output current capability of up to 3.7-A peak. The DRV8231A is part of a family of devices that offer scalable RDS(on) and supply voltage options, making it versatile for various applications with minimal design changes.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 4.5 to 33 | V |
| Peak Output Current | 3.7 | A |
| Logic Input Voltage | 0 to 5.5 | V |
| PWM Frequency Range | 0 to 200 | kHz |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Package Type | HSOP (8-pin), WSON (8-pin) | |
| Package Size (HSOP) | 4.9 × 6.0 mm | |
| Package Size (WSON) | 2.0 × 2.0 mm | |
| RDS(on) High-Side/Low-Side | 600 mΩ | |
| Quiescent Current in Sleep Mode | <1 µA at VVM = 24 V, TJ = 25°C |
Key Features
- N-channel H-bridge brushed DC motor driver
- High output current capability: 3.7-A peak
- PWM control interface supporting frequencies up to 200 kHz
- Supports 1.8-V, 3.3-V, and 5-V logic inputs
- Integrated IPROPI current sensing for stall detection and current regulation
- Low-power sleep mode with ultra-low quiescent current
- Small package and footprint options (HSOP and WSON with PowerPAD™)
- Integrated protection features: VM undervoltage lockout (UVLO), auto-retry overcurrent protection (OCP), and thermal shutdown (TSD)
Applications
- Printers
- Vacuum robots
- Washers and dryers
- Coffee machines
- POS printers
- Electricity meters
- ATMs (Automated Teller Machines)
- Ventilators
- Surgical equipment
- Electronic hospital beds and bed control systems
- Fitness machines
Q & A
- What is the operating supply voltage range of the DRV8231A?
The operating supply voltage range of the DRV8231A is 4.5-V to 33-V.
- What is the peak output current capability of the DRV8231A?
The peak output current capability of the DRV8231A is 3.7-A.
- What logic input voltages does the DRV8231A support?
The DRV8231A supports 1.8-V, 3.3-V, and 5-V logic inputs.
- What is the purpose of the IPROPI pin in the DRV8231A?
The IPROPI pin is used for current sensing and regulation, providing a current proportional to the motor current.
- What are the integrated protection features of the DRV8231A?
The DRV8231A includes VM undervoltage lockout (UVLO), auto-retry overcurrent protection (OCP), and thermal shutdown (TSD).
- How does the DRV8231A enter low-power sleep mode?
The device enters low-power sleep mode by bringing both logic inputs low.
- What are the package options available for the DRV8231A?
The DRV8231A is available in 8-pin HSOP and 8-pin WSON packages with PowerPAD™.
- What is the quiescent current in sleep mode for the DRV8231A?
The quiescent current in sleep mode is less than 1 µA at VVM = 24 V, TJ = 25°C.
- What is the typical RDS(on) of the MOSFETs in the DRV8231A?
The typical RDS(on) of the MOSFETs in the DRV8231A is 600 mΩ.
- What are some common applications of the DRV8231A?
The DRV8231A is used in various applications such as printers, vacuum robots, washers and dryers, coffee machines, and more.
