The DRV8312/32 is a three-phase PWM motor driver from TI. Its high-efficiency power stage (up to 97%) makes it an ideal choice for energy-efficient applications. The DRV8312/32 requires two power supplies, one 12V GVDD and VDD power supply, and another up to 50V PVDD power supply. The DRV8312/32 can operate at up to 500kHz switching frequency while still maintaining precise control and high efficiency. They also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system. These safeguards include short-circuit protection, overcurrent protection, and undervoltage protection.
The DRV8312 and DRV8332 are high‑performance three‑phase motor driver integrated circuits designed for BLDC, PMSM, inverter and robotic control applications. They offer independent control of three phases, built‑in protection features and a high‑efficiency power stage.
Key specifications include up to 50 V operating supply voltage, PWM switching frequencies up to 500 kHz, low MOSFET on‑resistance (80 mΩ at 25 °C) and programmable current‑limit protection. The devices are supplied in 44‑pin TSSOP (DRV8312) and 36‑pin PSOP (DRV8332) packages with dedicated thermal pads for heat dissipation.
| Operating Supply Voltage | up to 50 V (70 V absolute maximum) |
|---|---|
| PWM Switching Frequency | up to 500 kHz |
| Continuous Phase Current (DRV8312) | 3.5 A |
| Continuous Phase Current (DRV8332) | 8 A |
| Low Rds(on) MOSFETs | 80 mΩ at Tj=25 °C |
The devices support PWM switching frequencies up to 500 kHz.
They include undervoltage, overtemperature, overload, short‑circuit protection and programmable cycle‑by‑cycle current‑limit.
The MOSFET drain‑to‑source resistance is 80 mΩ at 25 °C for both low‑side and high‑side devices.