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MCT8316Z Datasheet(PDF) 1 Page - Texas Instruments |
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MCT8316Z Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 100 page  MCT8316Z-Q1 Sensored Trapezoidal Integrated FET BLDC Motor Driver 1 Features • AEC-Q100 qualified for automotive applications – Temperature grade 1: –40°C ≤ TA ≤ 125°C • Three-phase BLDC motor driver with integrated Sensored Trapezoidal control – Hall Sensor based Trapezodial (120°) commutation – Supports Analog or Digital Hall inputs – Configurable PWM modulation: Synchronous/ Asynchronous – Cycle-by-cycle current limit to limit phase current – Supports up to 200-kHz PWM frequency – Active Demagnetization to reduce power losses • 4.5-V 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 – 1.5-µA at VVM = 24-V, TA = 25°C • Integrated built-in current sense – Doesn't require external current sense resistors • Flexible device configuration options – MCT8316ZR-Q1: 5-MHz 16-bit SPI interface for device configuration and fault status – MCT8316ZT-Q1: Hardware pin based configuration • Supports 1.8-V, 3.3-V, and 5-V logic inputs • Built-in 3.3-V (5%), 30-mA LDO regulator • Built-in 3.3-V/5-V, 200-mA buck regulator • Delay compensation reduces duty cycle distortion • Suite of integrated protection features – Supply undervoltage lockout (UVLO) – Charge pump undervoltage (CPUV) – Overcurrent protection (OCP) – Motor lock protection – Thermal warning and shutdown (OTW/OTSD) – Fault condition indication pin (nFAULT) – Optional fault diagnostics over SPI interface 2 Applications • Brushless-DC (BLDC) Motor Modules • Automotive LIDAR • Small Automotive Fans and Pumps • Headlight Leveling 3 Description 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 Application Information for design consideration and recommendation on device usage. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) MCT8316ZR-Q1 VQFN (40) 7.00 mm × 5.00 mm MCT8316ZT-Q1 VQFN (40) 7.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. DIRECTION BRAKE SPI Only on SPI variant PWM input SPEED FGOUT Speed feecback nFAULT A B C 4.5V to 35V (40V abs max) 8-A peak output current, typically 12- to 24-V, Buck/LDO out 3.3 or 5.0 V, up to 200mA MCT8316Z-Q1 Buck/LDO Regulator Integrated Current Sensing Buck/LDO out H H H Hall inputs support: Differen al Hall elements Differen al analog output Hall-effect sensors Digital output Hall-effect sensors Single-ended analog output Hall-effect sensors Sensored Trap Control Simplified Schematics MCT8316Z-Q1 SLVSGO3 – 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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