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MCT8316AV Datasheet(PDF) 1 Page - Texas Instruments |
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MCT8316AV Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 179 page  MCT8316A High Speed Sensorless Trapezoidal Control Integrated FET BLDC Driver 1 Features • Three-phase BLDC motor driver with integrated sensorless motor control algorithm – Code-free high speed Trapezoidal Control – Supports upto 3 kHz (electrical frequency) – Very fast startup time (<50 ms) – Fast Deceleration (<150 ms) – 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 35-V operating voltage (40-V abs max) • High output current capability: 8-A peak • Low MOSFET on-state resistance – 95-mΩ RDS(ON) (HS + LS) at TA = 25°C • Low power sleep mode – 3-µA (maximum) at VVM = 24-V, TA = 25°C • Speed loop accuracy: 3% with internal clock and 1% with external clock reference • Flexible device configuration options – MCT8316AV: I2C interface (EEPROM) – MCT8316AT: Hardware pin based configuration • Supports up to 100-kHz PWM frequency for low inductance motor support • Does not require external current sense resistor • Built-in 3.3-V ±5%, 20-mA LDO regulator • Built-in 3.3-V/5-V, 170-mA 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 2 Applications • Brushless-DC (BLDC) Motor Modules • Robotic Vacuum Suction Motors • Motor Cycle Fuel Pumps • Appliance Fans and Pumps • Automotive Fan and Blowers • Medical CPAP Blowers 3 Description The MCT8316A provides a single-chip, code- free sensorless trapezoidal solution for customers requiring high speed operation (up to 3kHz electrical) or very fast startup time (<50ms) for 12- to 24-V brushless-DC motors up to 8-A peak current. The MCT8316A integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95 mΩ (high-side + low-side). Power management features of an adjustable buck regulator and LDO generate the 3.3-V or 5.0-V voltage rails for the device and can be used to power external circuits. Sensorless trapezoidal control is highly configurable through register settings (MCT8316AV) or hardware pins (MCT8316AT) ranging from motor start-up behavior to closed loop operation. Register settings for MCT8316AV can be set in non-volatile EEPROM, which allows the device to operate stand-alone once it 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, intended to protect the device, motor, and system against fault events. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) MCT8316A1V VQFN (40) 7.00 mm × 5.00 mm MCT8316A1T VQFN (40) 7.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Documentation for reference: • Refer E2E FAQ for clarification. • Refer MCT8316A tuning guide • Refer to the MCT8316A EVM GUI MCT8316A Buck/LDO Regulator Integrated Current Sensing EEPROM /HW Sensorless Trap DIRECTION BRAKE I 2C/HW Op onal during opera on; I 2C speed, diagnos cs, or on-the- y con gura on PWM, analog, frequency or commanded over I 2C SPEED FG Speed feecback nFAULT DACOUTx Op onal real- me variable monitoring, 12-bit DAC A B C 4.5 to 35-V (40-V abs max) 8-A peak output current, typically 12 to 24-V Buck out 3.3 or 5.0-V, up to 170-mA A LDO out 3.3-V, up to 20-mA Simplified Schematic MCT8316A SLLSFH8A – AUGUST 2021 – REVISED DECEMBER 2021 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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