Overview
The DRV8312DDW from Texas Instruments is a high-performance, integrated three-phase motor driver designed for efficient and reliable operation in various motor control applications. This device features a high-efficiency power stage with low RDS(on) MOSFETs, achieving up to 97% efficiency. It operates with a supply voltage up to 50 V and supports PWM frequencies up to 500 kHz. The DRV8312DDW includes advanced protection circuits such as undervoltage, overtemperature, overload, and short-circuit protection, making it a robust solution for motor control systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | Up to 50 V | V |
| Continuous Phase Current | Up to 3.5 A (DRV8312) | A |
| Peak Phase Current | Up to 6.5 A (DRV8312) | A |
| PWM Operating Frequency | Up to 500 kHz | kHz |
| RDS(on) MOSFETs | 80 mΩ at TJ = 25°C | mΩ |
| Package Type | 44-pin HTSSOP (DDW) | |
| Operating Ambient Temperature | -40 to 85 °C | °C |
| Junction-to-Ambient Thermal Resistance | 24.5 °C/W (with heat sink) | °C/W |
Key Features
- High-efficiency power stage with up to 97% efficiency and low RDS(on) MOSFETs (80 mΩ at TJ = 25°C)
- Operating supply voltage up to 50 V and PWM frequencies up to 500 kHz
- Independent control of three phases and programmable cycle-by-cycle current limit protection
- Integrated self-protection circuits including undervoltage, overtemperature, overload, and short-circuit protection
- Intelligent gate drive and cross conduction prevention without the need for external snubber or Schottky diode
- Independent supply and ground pins for each half-bridge, supporting current measurement through external shunt resistors
Applications
- BLDC (Brushless DC) motors
- Three-phase permanent magnet synchronous motors
- Inverters and half-bridge drivers
- Robotic control systems
Q & A
- What is the maximum operating supply voltage for the DRV8312DDW?
The maximum operating supply voltage is up to 50 V. - What is the maximum continuous phase current for the DRV8312DDW?
The maximum continuous phase current is up to 3.5 A. - What is the maximum PWM operating frequency supported by the DRV8312DDW?
The maximum PWM operating frequency is up to 500 kHz. - What type of protection circuits are integrated into the DRV8312DDW?
The device includes undervoltage, overtemperature, overload, and short-circuit protection circuits. - Does the DRV8312DDW require external snubber or Schottky diodes?
No, the DRV8312DDW does not require external snubber or Schottky diodes due to its intelligent gate drive and cross conduction prevention design. - What is the package type of the DRV8312DDW?
The package type is a 44-pin HTSSOP (DDW). - What is the operating ambient temperature range for the DRV8312DDW?
The operating ambient temperature range is -40 to 85 °C. - How does the DRV8312DDW handle thermal management?
The device includes a thermal pad on the bottom side for heat dissipation through the PCB, and it is recommended to use a heatsink for improved thermal performance. - What are some common applications for the DRV8312DDW?
Common applications include BLDC motors, three-phase permanent magnet synchronous motors, inverters, half-bridge drivers, and robotic control systems. - How can the current limit be programmed in the DRV8312DDW?
The current limit can be programmed using the OC programming resistor in cycle-by-cycle current limit modes or OC latching shutdown modes.
