Overview
The DRV8311HRRWR, produced by Texas Instruments, is a three-phase PWM motor driver designed for driving three-phase brushless DC (BLDC) motors. This device is part of the DRV8311 family and is available in a 24-pin WQFN package with an exposed thermal pad. It operates within a voltage range of 3 to 20 volts, with an absolute maximum voltage of 24 volts. The DRV8311HRRWR integrates three MOSFET half-H-bridges, making it suitable for applications requiring high output current capability and low on-state resistance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 3 to 20 | V |
| Absolute Maximum Voltage | 24 | V |
| Peak Output Current | 5 | A |
| On-state Resistance (RDS(ON)) | 210 mΩ (typ) | mΩ |
| PWM Frequency | Up to 200 kHz | kHz |
| Logic Input Voltage | 1.8 V, 3.3 V, 5 V | V |
| Operating Ambient Temperature | -40 to 125 °C | °C |
| Junction-to-Ambient Thermal Resistance | 42.6 °C/W | °C/W |
Key Features
- Three-phase PWM motor driver for BLDC motors
- High output current capability with 5-A peak current drive
- Low on-state resistance MOSFETs (210 mΩ typ at 25°C)
- Low power sleep mode with 1.5-µA current at 12 V and 25°C
- Multiple control interface options including 6x PWM, 3x PWM, and PWM generation mode via SPI/tSPI
- Integrated current sensing with no external resistor required
- Built-in 3.3-V ± 4.5%, 100-mA LDO regulator
- Integrated protection features: VM undervoltage lockout, charge pump undervoltage, overcurrent protection, thermal warning and shutdown, and fault condition indication pin
Applications
- Brushless-DC (BLDC) Motor Modules
- Drones and Handheld Gimbal
- Coffee Machines
- Vacuum Robots
- Washer and Dryer Pumps
- Laptop, Desktop, and Server Fans
Q & A
- What is the operating voltage range of the DRV8311HRRWR?
The operating voltage range is 3 to 20 volts, with an absolute maximum voltage of 24 volts.
- What is the peak output current capability of the DRV8311HRRWR?
The peak output current capability is 5 amps.
- What are the integrated protection features of the DRV8311HRRWR?
The device includes VM undervoltage lockout, charge pump undervoltage, overcurrent protection, thermal warning and shutdown, and a fault condition indication pin.
- What is the maximum PWM frequency supported by the DRV8311HRRWR?
The device supports up to 200 kHz PWM frequency.
- Does the DRV8311HRRWR have integrated current sensing?
- What is the purpose of the built-in LDO regulator in the DRV8311HRRWR?
The built-in 3.3-V ± 4.5%, 100-mA LDO regulator provides a stable voltage supply for the device.
- What are the typical applications of the DRV8311HRRWR?
Typical applications include BLDC motor modules, drones, handheld gimbals, coffee machines, vacuum robots, washer and dryer pumps, and laptop, desktop, and server fans.
- How does the DRV8311HRRWR support multiple motor control interfaces?
The device supports multiple control interfaces including 6x PWM, 3x PWM, and PWM generation mode via SPI/tSPI.
- What is the junction-to-ambient thermal resistance of the DRV8311HRRWR?
The junction-to-ambient thermal resistance is 42.6 °C/W.
- Does the DRV8311HRRWR have a sleep mode?
