MCT8316A-Q1数据手册TI中文资料规格书

描述 Description

The MCT8316A-Q1 provides a single-chip, code-free sensorless trapezoidal device for customers requiring high speed operation (up to 3kHz electrical) or very fast startup time (<50ms) for 12 to 24V brushless-DC motors up to 8A peak current. The MCT8316A-Q1 integrates three 1/2-H bridges with 40V absolute maximum capability and a very low RDS(ON) of 95mΩ (high-side + low-side). Power management features of an adjustable buck regulator and LDO generate the 3.3V or 5.0V voltage rails for the device and can be used to power external circuits.

Sensorless trapezoidal control is highly configurable ranging from motor start-up behavior to closed loop operation through register settings. These settings can be saved in non-volatile EEPROM, which allows the device to operate stand-alone once the device has been configured. The device receives a speed command through a PWM input, analog voltage, variable frequency square wave or I2C command. There are a large number of protection features integrated into the MCT8316A-Q1, intended to protect the device, motor, and system against fault events.

Documentation for reference: Refer E2E FAQ for clarification. Refer MCT8316A-Q1 tuning guide Refer to the MCT8316A-Q1 EVM GUI

特性 Features

AEC-Q100 qualified for automotive applications

Temperature Grade-1 : –40°C ≤ TA ≤ 125°C



Three-phase BLDC motor driver with integrated sensorless motor control algorithm

Code-free high speed Trapezoidal Control

Supports upto 3kHz (electrical frequency)

Very fast startup time (<50ms)

Fast Deceleration (<150ms)

Supports 120° or 150° modulation to improve acoustic performance

Windmilling support through forward resynchronization and reverse drive

Analog, PWM, freq. or I2C based speed input

Active Demagnetization to reduce power losses

Configurable motor startup and stop options

Optional closed loop speed control

Anti-voltage surge protections prevents overvoltage

Variable monitoring through DACOUT



4.5 to 35V operating voltage (40V abs max)

High output current capability: 8A peak

Low MOSFET on-state resistance

95mΩ RDS(ON) (HS + LS) at TA = 25°C



Low power sleep mode

3µA (maximum) at VVM = 24-V, TA = 25°C



Speed loop accuracy: 3% with internal clock and 1% with external clock reference

Supports up to 100kHz PWM frequency for low inductance motor support

Does not require external current sense resistor

Built-in 3.3V ±5%, 20mA LDO regulator

Built-in 3.3V/5V, 170mA buck regulator

Dedicated DRVOFF pin to disable (Hi-Z) outputs

Spread spectrum and slew rate for EMI mitigation

Suite of Integrated protection features

Supply undervoltage lockout (UVLO)

Motor lock detection (5 different types)

Overcurrent protection (OCP)

Thermal warning and shutdown (OTW/TSD)

Fault condition indication pin (nFAULT)

Optional fault diagnostics over I2C interface