Texas Instruments DRV8316C Three-Phase Integrated FET Motor Driver
Texas Instruments DRV8316C Three-Phase Integrated FET Motor Driver integrates three H-bridges with 40V absolute maximum capability. It includes a very low RDS(ON) of 95mΩ (high-side + low-side) to enable high-power drive capability for 12V/24V brushless-DC motors. DRV8316C provides integrated current sensing, eliminating the need for external sense resistors. DRV8316C integrates power management circuits, including a voltage-adjustable buck regulator (3.3V/5V, 200mA) and LDO (3.3V/30mA) that can power external circuits.
The Texas Instruments DRV8316C provides a configurable 6x or 3x PWM control scheme, which can be used to implement sensored or sensorless field-oriented control (FOC), sinusoidal control, or trapezoid control using an external microcontroller. DRV8316C is capable of driving a PWM frequency of up to 200kHz. DRV8316C is highly configurable either through SPI (DRV8316CR) or pins (DRV8316CT) - PWM mode. Some configurable features are the slew rate, OCP level, and current sense gain.
This device has several protection features, including supply undervoltage lockout (UVLO), overvoltage protection (OVP), charge pump undervoltage (CPUV), and overcurrent protection (OCP). It also has an over-temperature warning (OTW) and over-temperature shutdown (OTSD) features. These features are integrated into DRV8316C to protect the device, motor, and system against fault events. The nFAULT pin indicates fault conditions.
Features
- Three-phase BLDC motor driver
- Cycle-by-cycle current limit to limit phase current
- Supports up to 200kHz PWM frequency
- Active demagnetization to reduce power losses
- 4.5V to 35V operating voltage (40V abs max)
- 8A Peak high output current capability
- Low MOSFET on-state resistance
- 95mΩ RDS(ON) (HS + LS) at TA = 25°C
- Low-power sleep mode
- 1.5µA at VVM = 24V, TA = 25°C
- Multiple control interface options
- 6x PWM control interface
- 3x PWM control interface
- 6x PWM control interface with cycle-by-cycle current limit
- 3x PWM control interface with cycle-by-cycle current limit
- It does not require external current sense resistors, built-in current sensing
- Flexible device configuration options
- DRV8316CR: 5MHz 16-bit SPI interface for device configuration and fault status
- DRV8316CT: Hardware pin-based configuration
- Supports 1.8V, 3.3V, and 5V logic inputs
- Built-in 3.3V (5%), 30mA LDO regulator
- Built-in 3.3V/5V, 200mA buck regulator
- Built-in 3.3V, 30mA LDO
- Delay compensation reduces duty cycle distortion
- Suite of integrated protection features
- Supply undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal warning and shutdown (OTW/OTSD)
- Fault condition indication pin (nFAULT)
- Optional fault diagnostics over SPI interface
Applications
- CPAP machines
- Brushless-DC (BLDC) motor modules
- Printers
- Camera gimbals
- HVAC motors
- Small home appliances
- Office automation machines
- Factory automation and robotics
Simplified Schematic
Related Development Tool
Texas Instruments DRV8316REVM Evaluation Module
Designed to evaluate the DRV8316R three-phase PWM motor driver.