Overview
The DRV8312DDWR is a highly integrated three-phase motor driver IC designed by Texas Instruments. It is specifically tailored for driving Brushless DC (BLDC) motors and other three-phase permanent magnet synchronous motors. This device features high-efficiency power stages with low RDS(on) MOSFETs, achieving efficiencies of up to 97%. The DRV8312DDWR operates with a supply voltage up to 50 V and supports PWM frequencies up to 500 kHz, making it suitable for energy-efficient applications. The device includes advanced protection circuits such as undervoltage, overtemperature, overload, and short-circuit protection, ensuring robust and reliable operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | Up to 50 V | V |
| Continuous Phase Current | Up to 3.5 A | A |
| Peak Phase Current | Up to 6.5 A | A |
| PWM Operating Frequency | Up to 500 kHz | kHz |
| RDS(on) MOSFETs | 80 mΩ at TJ = 25°C | mΩ |
| Package Type | HTSSOP (44 pins) | - |
| 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 peak output current up to 6.5 A
- PWM operating frequency up to 500 kHz
- Integrated self-protection circuits including undervoltage, overtemperature, overload, and short-circuit protection
- Programmable cycle-by-cycle current limit protection and OC latching shutdown
- Independent supply and ground pins for each half-bridge, supporting current measurement through external shunt resistors
- Intelligent gate drive and cross conduction prevention, eliminating the need for external snubbers or Schottky diodes
- Advanced error reporting through FAULT and OTW pins for system control and monitoring
Applications
- Brushless DC (BLDC) 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 DRV8312DDWR?
The maximum operating supply voltage is up to 50 V.
- What is the peak phase current capability of the DRV8312DDWR?
The peak phase current capability is up to 6.5 A.
- What is the maximum PWM operating frequency supported by the DRV8312DDWR?
The maximum PWM operating frequency is up to 500 kHz.
- Does the DRV8312DDWR require external snubbers or Schottky diodes?
No, the DRV8312DDWR does not require external snubbers or Schottky diodes due to its intelligent gate drive and cross conduction prevention.
- What types of protection circuits are integrated into the DRV8312DDWR?
The DRV8312DDWR includes undervoltage, overtemperature, overload, and short-circuit protection circuits.
- How does the DRV8312DDWR handle error reporting?
The device uses FAULT and OTW pins for error reporting, signaling conditions such as overtemperature warnings, overcurrent shutdown, and undervoltage protection.
- What is the package type and pin count of the DRV8312DDWR?
The DRV8312DDWR comes in a HTSSOP package with 44 pins.
- What is the operating ambient temperature range for the DRV8312DDWR?
The operating ambient temperature range is -40 to 85 °C.
- Does the DRV8312DDWR support independent supply and ground pins for each half-bridge?
- What are some common applications for the DRV8312DDWR?
