MCT8316 Series
Automotive 40-V max, 8-A peak, sensored trapezoidal control 3-phase BLDC motor driver
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Grade | Interface | Output Configuration | Motor Type - Stepper | Current - Output▲▼ | Supplier Device Package | Function | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Load▲▼ | Voltage - Load▲▼ | Motor Type - AC, DC | Package / Case | Technology | Mounting Type | Applications |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Automotive | I2C | Half Bridge (3) | Multiphase | 8 A | 40-VQFN (7x5) | Controller - Speed | 4.5 V | 35 V | -40 °C | 125 °C | 4.5 V | 35 V | Brushless DC (BLDC) | 40-VFQFN Exposed Pad | NMOS | Surface Mount | ||
SPI | Half Bridge (3) | Multiphase | 8 A | 40-VQFN (7x5) | Driver - Fully Integrated, Control and Power Stage | 4.5 V | 35 V | -40 °C | 125 °C | 4.5 V | 35 V | Brushless DC (BLDC) | 40-VFQFN Exposed Pad | NMOS | Surface Mount | General Purpose |
Key Features
• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C ≤ TA ≤ 125°CThree-phase BLDC motor driver with integrated Sensored Trapezoidal controlHall Sensor based Trapezodial (120°) commutationSupports Analog or Digital Hall inputsConfigurable PWM modulation: Synchronous/AsynchronousCycle-by-cycle current limit to limit phase currentSupports up to 200-kHz PWM frequencyActive Demagnetization to reduce power losses4.5-V to 35-V operating voltage (40-V abs max)High output current capability: 8-A PeakLow MOSFET on-state resistance95-mΩ RDS(ON)(HS + LS) at TA= 25°CLow power sleep mode1.5-µA at VVM= 24-V, TA= 25°CIntegrated built-in current senseDoesn’t require external current sense resistorsFlexible device configuration optionsMCT8316ZR-Q1: 5-MHz 16-bit SPI interface for device configuration and fault statusMCT8316ZT-Q1: Hardware pin based configurationSupports 1.8-V, 3.3-V, and 5-V logic inputsBuilt-in 3.3-V (5%), 30-mA LDO regulatorBuilt-in 3.3-V/5-V, 200-mA buck regulatorDelay compensation reduces duty cycle distortionSuite of integrated protection featuresSupply undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Motor lock protectionThermal warning and shutdown (OTW/OTSD)Fault condition indication pin (nFAULT)Optional fault diagnostics over SPI interfaceAEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C ≤ TA ≤ 125°CThree-phase BLDC motor driver with integrated Sensored Trapezoidal controlHall Sensor based Trapezodial (120°) commutationSupports Analog or Digital Hall inputsConfigurable PWM modulation: Synchronous/AsynchronousCycle-by-cycle current limit to limit phase currentSupports up to 200-kHz PWM frequencyActive Demagnetization to reduce power losses4.5-V to 35-V operating voltage (40-V abs max)High output current capability: 8-A PeakLow MOSFET on-state resistance95-mΩ RDS(ON)(HS + LS) at TA= 25°CLow power sleep mode1.5-µA at VVM= 24-V, TA= 25°CIntegrated built-in current senseDoesn’t require external current sense resistorsFlexible device configuration optionsMCT8316ZR-Q1: 5-MHz 16-bit SPI interface for device configuration and fault statusMCT8316ZT-Q1: Hardware pin based configurationSupports 1.8-V, 3.3-V, and 5-V logic inputsBuilt-in 3.3-V (5%), 30-mA LDO regulatorBuilt-in 3.3-V/5-V, 200-mA buck regulatorDelay compensation reduces duty cycle distortionSuite of integrated protection featuresSupply undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Motor lock protectionThermal warning and shutdown (OTW/OTSD)Fault condition indication pin (nFAULT)Optional fault diagnostics over SPI interface
Description
AI
The MCT8316Z-Q1 provides a single-chip code-free sensored trapezoidal solution for customers driving 12-V brushless-DC motors in automotive. The MCT8316Z-Q1 integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95 mOhms (high-side and low-side combined) to enable high power drive capability. Current is sensed using an integrated current sensing feature which eliminates the need for external sense resistors. Power management features of an adjustable buck regulator and LDO generate the necessary voltage rails for the device and can be used to power external circuits.
MCT8316Z-Q1 implements sensored trapezoidal control in a fixed-function state machine, so an external microcontroller is not required to spin the brushless-DC motor. The MCT8316Z-Q1 device integrates three analog hall comparators for position sensing to achieve sensored trapezoidal BLDC motor control. The control scheme is highly configurable through hardware pins or register settings ranging from motor current limiting behavior to fault response. The speed can be controlled through a PWM input.
There are a large number of protection features integrated into the MCT8316Z-Q1, intended to protect the device, motor, and system against fault events.
Refer Section 9.1 for design consideration and recommendation on device usage.
The MCT8316Z-Q1 provides a single-chip code-free sensored trapezoidal solution for customers driving 12-V brushless-DC motors in automotive. The MCT8316Z-Q1 integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95 mOhms (high-side and low-side combined) to enable high power drive capability. Current is sensed using an integrated current sensing feature which eliminates the need for external sense resistors. Power management features of an adjustable buck regulator and LDO generate the necessary voltage rails for the device and can be used to power external circuits.
MCT8316Z-Q1 implements sensored trapezoidal control in a fixed-function state machine, so an external microcontroller is not required to spin the brushless-DC motor. The MCT8316Z-Q1 device integrates three analog hall comparators for position sensing to achieve sensored trapezoidal BLDC motor control. The control scheme is highly configurable through hardware pins or register settings ranging from motor current limiting behavior to fault response. The speed can be controlled through a PWM input.
There are a large number of protection features integrated into the MCT8316Z-Q1, intended to protect the device, motor, and system against fault events.
Refer Section 9.1 for design consideration and recommendation on device usage.