Overview
The Texas Instruments MCT8316Z0TRGFR is a 40-V max, 8-A peak, sensored trapezoidal control 3-phase BLDC (Brushless DC) motor driver. This device provides a single-chip code-free solution for driving 12- to 24-V brushless-DC motors, integrating three 1/2-H bridges with a very low RDS(ON) of 95 mOhms. It features an integrated current sensing capability, eliminating the need for external current sense resistors. The MCT8316Z0TRGFR includes power management features such as an adjustable buck regulator and an LDO (Low Dropout) regulator, which can also power external circuits. The device operates in a fixed-function state machine, allowing for sensored trapezoidal BLDC motor control without the need for an external microcontroller.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage | 4.5 to 35 V (40 V abs max) | V |
| Peak Output Current | 8 A | A |
| MOSFET On-State Resistance (RDS(ON)) | 95 mΩ (high-side and low-side combined) | mΩ |
| PWM Frequency | Up to 200 kHz | kHz |
| Logic Input Voltage | 1.8 V, 3.3 V, 5 V | V |
| LDO Regulator Output | 3.3 V (5%), 30 mA | V, mA |
| Buck Regulator Output | 3.3 V/5 V, 200 mA | V, mA |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Type | VQFN-40 (7x5 mm) | - |
Key Features
- Integrated sensored trapezoidal control with Hall Sensor based 120° commutation
- Supports Analog or Digital Hall inputs
- Configurable PWM modulation: Synchronous/Asynchronous
- Cycle-by-cycle current limit to limit phase current
- Active Demagnetization to reduce power losses
- Integrated built-in current sense, eliminating the need for external current sense resistors
- Flexible device configuration options via 5-MHz 16-bit SPI interface or hardware pins
- Built-in 3.3-V (5%), 30-mA LDO regulator and 3.3-V/5-V, 200-mA buck regulator
- Delay compensation to reduce duty cycle distortion
- Suite of integrated protection features including UVLO, CPUV, OCP, Motor lock protection, and Thermal warning and shutdown (OTW/OTSD)
- Low power sleep mode with 1.5-µA at VVM = 24 V, TA = 25°C
Applications
- Brushless-DC (BLDC) Motor Modules
- Small home appliances
- HVAC motors
- Office automation machines
- Factory automation and robotics
Q & A
- What is the maximum operating voltage of the MCT8316Z0TRGFR?
The maximum operating voltage is 40 V absolute maximum, with a typical operating range of 4.5 to 35 V.
- What is the peak output current capability of the MCT8316Z0TRGFR?
The peak output current capability is 8 A.
- Does the MCT8316Z0TRGFR require an external microcontroller to control the BLDC motor?
No, the MCT8316Z0TRGFR implements sensored trapezoidal control in a fixed-function state machine, eliminating the need for an external microcontroller.
- What types of Hall inputs does the MCT8316Z0TRGFR support?
The device supports both Analog and Digital Hall inputs.
- What is the purpose of the integrated current sensing feature?
The integrated current sensing feature eliminates the need for external current sense resistors.
- What are the available configuration options for the MCT8316Z0TRGFR?
The device can be configured via a 5-MHz 16-bit SPI interface or through hardware pins.
- What protection features are integrated into the MCT8316Z0TRGFR?
The device includes protection features such as UVLO, CPUV, OCP, Motor lock protection, and Thermal warning and shutdown (OTW/OTSD).
- What is the typical sleep mode current consumption of the MCT8316Z0TRGFR?
The typical sleep mode current consumption is 1.5-µA at VVM = 24 V, TA = 25°C.
- What is the package type and size of the MCT8316Z0TRGFR?
The device is packaged in a VQFN-40 (7x5 mm) package.
- What are some common applications for the MCT8316Z0TRGFR?
Common applications include BLDC motor modules, small home appliances, HVAC motors, office automation machines, and factory automation and robotics.
