MCT8316A - 40V, 8A Sensorless BLDC Motor Driver | Texas Instruments MCT8316A bởi Texas Instruments - thành phần điện tử
Texas Instruments

MCT8316A - 40V, 8A Sensorless BLDC Motor Driver | Texas Instruments

MPN: MCT8316A ✓ Hoạt động
40 V Vdss 8 A Id 95 mOhm Rds(on) 40-VQFN (7x5 mm) with exposed thermal pad Package 3 kHz Speed
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MCT8316A Tóm tắt

The Texas Instruments MCT8316A is a 40-V max, 8-A peak, sensorless trapezoidal control integrated FET 3-phase BLDC motor driver supplied in a 40-pin VQFN (7x5 mm) package with exposed thermal pad. It delivers a single-chip, code-free solution for 12- to 24-V brushless-DC motors requiring high-speed operation up to 3 kHz electrical frequency or very fast startup times below 50 ms.

A sensorless trapezoidal control BLDC driver is a motor driver that uses back-EMF sensing to determine rotor position, eliminating Hall-effect sensors and reducing system cost, wiring complexity, and failure points in harsh environments. The MCT8316A belongs to the integrated FET motor driver family within the broader power management and motor control IC hierarchy, combining gate drivers, power FETs, and control logic in one package.

Key features include three integrated NMOS half-bridges with very low on-resistance (95 mOhm high-side + low-side per the MCT8316A-Q1 product data), support for both I2C (MCT8316AV) and hardware-interface (MCT8316AT) versions, configurable startup and stop options, active demagnetization, and optional closed-loop speed control. An integrated adjustable buck regulator and LDO generate 3.3-V or 5.0-V rails that can also power external circuitry.

The architecture implements code-free trapezoidal commutation with internal back-EMF sensing, so no firmware development is required for basic operation. Two 12-bit DACs output analog voltages proportional to internal digital variables on DACOUT1 and DACOUT2 pins, enabling real-time tuning and diagnostics. Protection features include undervoltage lockout (UVLO), overcurrent protection (OCP), overtemperature warning and shutdown (OTW/OTSD), and abnormal voltage suppression (AVS).

Typical applications include power tools, vacuum robots, drones, fans, and pumps, where the <50 ms startup and 3 kHz electrical capability support rapid acceleration and high rotational speed. The I2C variant adds advanced configuration and monitoring for smart appliances and industrial equipment.

Design consideration: provide adequate bulk capacitance on the motor supply to absorb 8-A peak transients, and use short, low-inductance traces to the motor terminals to limit EMI; the exposed thermal pad needs a solid copper pour for heat dissipation at high continuous loads.

This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet.

Bộ thay thế dễ dàng lắp đặt cho MCT8316A — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

MCT8316A1VRGFR

✅ Drop-In
📦 40-VQFN (7x5)
Orderable I2C-interface variant of the same die and package; 40-V max, 8-A peak ratings identical

📋 Tham chiếu thay thế (không có trong danh mục)

MCT8316A-Q1

✅ Drop-In
📦 40-VQFN (7x5)
Automotive AEC-qualified variant; same 40-V absolute maximum and 95 mOhm (HS+LS) RDS(on)

📋 Tham chiếu thay thế (không có trong danh mục)

MCT8316Z

✅ Drop-In
📦 40-VQFN (7x5)
Same integrated 3-half-bridge power stage family in 40-VQFN; configuration/control feature set differs from MCT8316A trapezoidal version

📋 Tham chiếu thay thế (không có trong danh mục)

MCT8316AV

✅ Drop-In ⚠️ Thông số chưa được xác minh
📦 40-VQFN (7x5)
I2C serial configuration and diagnostics vs hardware pin configuration; identical power stage ratings

📋 Tham chiếu thay thế (không có trong danh mục)

MCT8316AT

✅ Drop-In ⚠️ Thông số chưa được xác minh
📦 40-VQFN (7x5)
Hardware pin configuration without I2C; identical power stage and trapezoidal control

📋 Tham chiếu thay thế (không có trong danh mục)

MCF8316A

✅ Drop-In ⚠️ Thông số chưa được xác minh
📦 40-VQFN (7x5)
Sensorless FOC instead of trapezoidal control; same integrated-FET 40-V class 3-phase power stage in 40-VQFN, pin functions differ in places

📋 Tham chiếu thay thế (không có trong danh mục)

MCT8316A Tỷ lệ tối đa & tính chất điện

Motor Control Type Sensorless trapezoidal control BLDC
Number of Phase Outputs 3-phase (three 1/2-H bridges)
Maximum Supply Voltage 40 V
Peak Output Current 8 A
Motor Voltage Range 12 V to 24 V
RDS(on) (HS + LS) 95 mOhm
Maximum Electrical Frequency 3 kHz
Minimum Startup Time < 50 ms
Control Interface I2C (MCT8316AV variant) or Hardware pins (MCT8316AT variant)
Integrated Power FETs Yes (3 half-bridges, NMOS)
Integrated Regulators Adjustable buck regulator + LDO (3.3 V or 5.0 V output)
DAC Outputs 2 x 12-bit DACOUT for variable monitoring
Protection Features UVLO, OCP, OTW, OTSD, AVS
Startup / Stop Options Configurable
Speed Control Open-loop and optional closed-loop
Hộp 40-VQFN (7x5 mm) with exposed thermal pad
Kiểu lắp đặt Surface Mount
Trạng thái vòng đời Active

Hướng dẫn cấu hình chân MCT8316A 40-vqfn (7x5 mm) with exposed thermal pad

Cấu hình chân cho MCT8316A (40-vqfn (7x5 mm) with exposed thermal pad gói). Động cơ điện này có chân cổng, nguồn và đầu ra. Đối với các gói không phân極, tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết hướng dẫn chính xác của chân 1 và chi tiết về vân footprint. Các ứng dụng phổ biến bao gồm thiết kế nguồn cung cấp điện, điều khiển động cơ và chuyển đổi tải.

Bảng cấu hình chân 40-vqfn (7x5 mm) with exposed thermal pad cho MCT8316A

Không có dữ liệu chân cụ thể sẵn có cho MCT8316A.

Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.

Ứng dụng tiêu biểu

MCT8316A phù hợp cho 6 Áp dụngs: Power Tools, Vacuum Robots, Drones and UAV Propulsion, Cooling Fans and Blowers, Pumps, Home Appliance BLDC Systems.

🔧

Power Tools

Cordless and corded power tools demand fast spin-up, high torque transients, and rugged 12- to 24-V battery operation - exactly the profile the MCT8316A was built for. Its under-50 ms sensorless startup gives drills and saws immediate response to trigger input, while the 8-A peak integrated power stage absorbs stall and acceleration currents without external FETs. Sensorless trapezoidal control eliminates Hall sensors that fail under shock and vibration, and integrated OCP, UVLO, OTSD, and AVS protection tolerates the abusive electrical environment of battery tools. The code-free operation also shortens time-to-market for tool platforms.

Được đề xuất

DRV8876PWPT · Texas Instruments MCT8316AEVM (Evaluation module for MCT8316A motor bring-up)
🧩

Vacuum Robots

Robot vacuum suction motors run from 12- to 24-V battery rails and need quiet, efficient, sensorless operation in a compact assembly. The MCT8316A drives these BLDC blowers with its integrated 95 mOhm (HS+LS) power stage, minimizing conduction losses that drain the battery, while active demagnetization reduces switching losses during high-speed commutation. The I2C variant (MCT8316AV) lets the robot main controller adjust suction power, read fault status, and monitor speed over the existing I2C bus. Hall-sensor elimination improves reliability in dusty environments where contamination degrades magnetic sensors.

Được đề xuất

MCT8316AEVM (Evaluation board for suction motor tuning)
✈️

Drones and UAV Propulsion

Compact drone propulsion motors are high-Kv BLDC machines whose electrical frequencies push well into the kilohertz range; the MCT8316A supports up to 3 kHz electrical operation, covering these high-RPM propeller loads. The sub-50 ms startup time delivers rapid throttle response essential for flight stability, and the 40-V tolerance accommodates 4S-to-higher-cell battery transients during aggressive maneuvers. Sensorless trapezoidal control removes Hall sensors and their wiring mass, and the integrated 8-A peak stage handles acceleration bursts without external FETs, keeping propulsion ESCs small and light for multirotor and fixed-wing platforms.

Được đề xuất

MCT8316AEVM (Evaluation module for propulsion motor testing)
🖥️

Cooling Fans and Blowers

Server, telecom, and appliance cooling fans benefit from the MCT8316A's sensorless operation and integrated protection suite. The device drives 12- and 24-V BLDC fan motors at high electrical frequency without Hall sensors that add cost and failure points in continuous-duty applications. The I2C variant reports speed and fault status to a host controller, supporting predictive-maintenance schemes, and the 12-bit DACOUT outputs allow OEMs to observe internal variables on an oscilloscope for acoustic optimization. UVLO, OCP, OTW/OTSD, and AVS protections guard against blocked-rotor and brown-out events common in fan service.

Được đề xuất

MCT8316AEVM (Evaluation board for fan motor tuning)
🏭

Pumps

Water, fuel, and circulation pumps in industrial and consumer equipment use 12- to 24-V BLDC motors well matched to the MCT8316A's ratings. Sensorless trapezoidal control keeps the electronics dry-side and eliminates Hall sensor cabling through wet or sealed assemblies, improving long-term reliability. The integrated 8-A peak capability handles pump startup torque and debris-induced stall transients, with OCP protecting the power stage during lockup. Closed-loop speed control maintains constant flow rate against varying head pressure, while the integrated buck regulator and LDO can power adjacent system circuitry, reducing external BOM count in compact pump housings.

Được đề xuất

MCT8316AEVM (Evaluation module for pump motor characterization)
💡

Home Appliance BLDC Systems

Blenders, air purifiers, kitchen exhausts, and other smart appliances increasingly replace brushed motors with sensorless BLDC for efficiency and acoustic reasons. The MCT8316A's code-free trapezoidal control lets appliance OEMs adopt BLDC without motor-control firmware investment, while the I2C variant (MCT8316AV) integrates with the appliance main controller for speed profiles, diagnostics, and fault reporting. The 3 kHz electrical ceiling covers high-speed blending motors, and integrated protections meet the abuse tolerance appliances require. Two 12-bit DAC outputs accelerate acoustic tuning by exposing commutation variables on a scope during development.

Được đề xuất

MCT8316AEVM (Evaluation board for appliance motor development)

Tóm tắt các sản phẩm được đề xuất

DRV8876PWPT Texas Instruments Được sử dụng trong: Power Tools MCT8316AEVM Evaluation module for MCT8316A motor bring-up Được sử dụng trong: Power Tools, Vacuum Robots, Drones and UAV Propulsion, Cooling Fans and Blowers, Pumps, Home Appliance BLDC Systems
What is the MCT8316A and what are its key specifications?
The Texas Instruments MCT8316A is a single-chip sensorless trapezoidal control integrated FET 3-phase BLDC motor driver rated for 40-V maximum supply and 8-A peak current, targeting 12- to 24-V motors. It supports up to 3 kHz electrical frequency, achieves startup in under 50 ms, integrates three NMOS half-bridges with 95 mOhm (HS+LS) on-resistance, and comes in a 40-VQFN (7x5) package. According to the TI datasheet, it is a code-free solution requiring no motor-control firmware.
What is the price of the MCT8316A?
XAIPART lists the MCT8316A from approximately $4.20 at quantity 1 down to about $2.38 at 1000 units as of 2026-08-30. Actual distributor pricing varies with the exact orderable variant (for example MCT8316A1VRGFR), interface version, and market conditions; DigiKey and Mouser list real-time inventory and pricing for orderable part numbers. Always request a current quote before production purchasing, since motor-driver IC pricing can shift with silicon availability.
Where to buy MCT8316A online?
The MCT8316A family can be purchased from XAIPART directly on this page, as well as from authorized distributors including DigiKey and Mouser, which list the orderable variant MCT8316A1VRGFR in the 40-VQFN (7x5) package. TrustedParts.com also aggregates authorized-distributor stock for the TI MCT8316A series. For production volumes, request quotes from multiple distributors; DigiKey and Mouser listings indicate same-day shipping capability for in-stock quantities as of 2026-08-30.
What is the difference between MCT8316A and MCF8316A?
The MCT8316A uses sensorless trapezoidal commutation, a code-free 120-degree control scheme optimized for high speed (up to 3 kHz electrical) and fast startup (<50 ms), while the MCF8316A uses sensorless field-oriented control (FOC) for lower torque ripple, higher efficiency, and quieter operation. Both are TI integrated-FET 3-phase BLDC drivers in similar 40-VQFN packages rated 40 V, but their control algorithms and pin functions differ, so they are not drop-in replacements for each other.
What is the difference between MCT8316AV and MCT8316AT versions?
The MCT8316AV version provides an I2C serial interface, allowing a host MCU to configure operating parameters, read diagnostic status, and monitor internal variables in software. The MCT8316AT version is a hardware-interface variant configured by pin settings for simple standalone operation without serial communication. Both versions share the same integrated three half-bridge power stage, 40-V/8-A ratings, sensorless trapezoidal control algorithm, and 40-VQFN (7x5) package.
Can the MCT8316A replace a Hall-sensor BLDC control system?
Yes. The MCT8316A was designed as a single-chip replacement for discrete Hall-sensor-based trapezoidal architectures such as MC33035 plus MC33039 combinations. It senses rotor position via integrated back-EMF detection, eliminating Hall sensors, their wiring, and alignment calibration. Per the TI datasheet, it handles 12- to 24-V motors up to 8 A peak with startup under 50 ms, covering the majority of 24-V, 2-A class fan, pump, and tool motors in legacy sensored designs.
What is the best drop-in replacement for the MCT8316A?
The closest same-brand drop-in option is the automotive-qualified MCT8316A-Q1, which integrates the same three 1/2-H bridges with 40-V absolute maximum capability and 95 mOhm (HS+LS) on-resistance in the same 40-VQFN (7x5) footprint. Within the family, MCT8316AV (I2C) and MCT8316AT (hardware interface) variants share the package and power stage but differ in configuration interface. No cross-brand pin-compatible equivalent was found in verified cross-reference data as of 2026-08-30.
Is MCT8316A suitable for drone and power tool motors?
Yes. The MCT8316A is explicitly suited to drones, power tools, vacuum robots, fans, and pumps. Its sub-50 ms startup supports the rapid throttle response drones require, and 3 kHz electrical operation covers the high RPM of compact high-Kv motors. The integrated 8-A peak power stage and 40-V tolerance handle 4S-class battery transients, while active demagnetization reduces switching losses during fast commutation - a benefit at the high electrical frequencies typical of small drone propulsion motors.
Where to download the MCT8316A datasheet PDF?
The official MCT8316A datasheet PDF is available from Texas Instruments at https://www.ti.com/lit/ds/symlink/mct8316a.pdf, and product information, ordering details, and quality data are on the TI product page at https://www.ti.com/product/MCT8316A. The datasheet covers electrical characteristics, the sensorless trapezoidal control algorithm, I2C register maps for the AV variant, protection behavior, layout guidelines, and application curves. Avoid third-party mirror sites when possible so you always have the latest revision.
Is MCT8316A the same as MCT8316A-Q1?
No, they are related but not identical. The MCT8316A-Q1 is the AEC-qualified automotive variant of the same integrated 3-half-bridge driver; TI lists the same 40-V absolute maximum capability and very low 95 mOhm (high-side + low-side) on-resistance. Functionally equivalent in power stage and trapezoidal control, the Q1 version adds automotive-grade qualification and associated quality flow, making it the correct choice for automotive programs, while the standard MCT8316A serves industrial and consumer designs.
What protections does the MCT8316A integrate?
According to the TI datasheet, the MCT8316A integrates undervoltage lockout (UVLO), overcurrent protection (OCP), overtemperature warning (OTW) and shutdown (OTSD), and abnormal voltage suppression (AVS). UVLO prevents operation below valid supply levels, OCP limits current through the integrated FETs, OTW flags excessive die temperature via status output or I2C before shutdown occurs, and AVS clamps abnormal voltage events such as inductive spikes. These protections allow robust single-chip designs without extensive external protection circuitry.
What are the key design considerations for the MCT8316A power stage?
Three considerations dominate. First, place adequate bulk capacitance near the VM pin - the 8-A peak motor current creates supply transients that must be absorbed locally. Second, keep the traces from the half-bridge outputs to the motor connector short and wide to minimize parasitic inductance and EMI from fast switching edges. Third, solder the exposed thermal pad to a solid copper pour; at high continuous currents, the 40-VQFN (7x5) package relies on this pad to keep junction temperature within limits.
What is the best cross-brand equivalent for the MCT8316A?
No verified pin-to-pin cross-brand equivalent for the MCT8316A was found in cross-reference data as of 2026-08-30. Functionally similar sensorless BLDC drivers from other TI families include the DRV10983 (sensorless 180-degree sinusoidal) and DRV8316, but these differ in package, pinout, and control scheme, so they require PCB redesign rather than drop-in replacement. For supply resilience, qualify the same-family MCT8316A-Q1 or dual-source at the board level instead of pin-compatibility claims.
Does the MCT8316A require firmware or motor parameter tuning?
The MCT8316A is a code-free solution: the trapezoidal sensorless algorithm runs entirely on-chip with no MCU firmware needed for commutation, which distinguishes it from MCU-plus-gate-driver architectures. However, some configuration is still required - startup and stop behavior, speed loop settings, and current limits are set via I2C registers on the AV variant or pin strapping on the AT variant. The DACOUT pins let you observe internal variables on an oscilloscope during bring-up, simplifying tuning without firmware hooks.
Is the MCT8316A in stock and what is the lead time?
As of 2026-08-30, DigiKey and Mouser listings for the orderable variant MCT8316A1VRGFR indicate buy-now, ships-today availability, meaning standard quantities are in distribution stock with typical lead times of days rather than weeks. Availability changes frequently for motor-driver ICs, so confirm live stock at DigiKey, Mouser, or TrustedParts before scheduling production. XAIPART accepts orders on this page; quote-based requests apply for volumes beyond listed tiers.

Dữ liệu tham khảo kỹ thuật cho MCT8316A — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.

Hướng dẫn chọn lựa

Choose the MCT8316A when you need a single-chip, code-free sensorless trapezoidal driver for 12- to 24-V BLDC motors up to 8 A peak, especially where high electrical frequency (up to 3 kHz) or sub-50 ms startup matters - power tools, drones, vacuum robots, fans, and pumps. Pick the MCT8316AV variant if your host MCU should configure and monitor the driver over I2C; pick the MCT8316AT hardware variant for simple pin-strapped standalone designs. Choose the MCT8316A-Q1 for automotive programs needing the same 40-V/95 mOhm power stage with automotive qualification. If your priority is lowest torque ripple and acoustic noise rather than raw speed and startup time, the MCF8316A with sensorless FOC is the better fit, though it is not pin-for-pin identical. No verified cross-brand pin-compatible equivalent exists, so board-level redesign would be required outside the TI MCT8316A family.

So sánh với các sản phẩm thay thế

Tham số Sản phẩm này MCT8316A1VRGFR MCT8316A-Q1 MCT8316Z MCF8316A
Package 40-VQFN (7x5 mm), exposed thermal pad 40-VQFN (7x5) - same 40-VQFN (7x5) - same 40-VQFN (7x5) - same 40-VQFN (7x5) - same family package
Brand Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Control Algorithm Sensorless trapezoidal (code-free) Sensorless trapezoidal Sensorless trapezoidal Sensorless trapezoidal family Sensorless FOC

Bảo phân biệt quan trọng

  • Code-free high-speed trapezoidal operation up to 3 kHz electrical (vsMCF8316A)
  • Automotive-qualified drop-in option available (vsMCT8316A-Q1)
  • Sub-50 ms startup beats conventional sensorless solutions (vsMCT8316Z)
  • Integrated buck + LDO power auxiliary circuits (vsMCT8316A1VRGFR)

Ghi chú thiết kế

Size bulk capacitance for the 8-A peak commutation currents. Estimated: with 500 mm of 24-V supply wiring at roughly 1 uH of loop inductance, a 1-A/us current edge can generate tens of volts of rail transient; local bulk capacitance (e.g., 22-47 uF electrolytic plus 0.1 uF ceramic per the datasheet layout guidance) adjacent to VM is essential. The integrated AVS feature adds tolerance to abnormal voltage events, but should be treated as a second line of defense, not a substitute for proper decoupling.

Estimated: at 3 A continuous with 95 mOhm total HS+LS on-resistance, conduction loss is approximately P = I^2 x R = 3^2 x 0.095 = 0.86 W, rising to roughly 6 W at the 8-A peak - the peak rating is short-duration. Solder the exposed thermal pad to a minimum 1 square inch copper pour with thermal vias to inner planes. Verify junction temperature with the datasheet theta-JA for the 40-VQFN (7x5) and the OTW/OTSD thresholds in your worst-case ambient.

Keep the half-bridge output traces to the motor connector short, wide, and symmetrical between phases to minimize parasitic inductance, EMI, and unbalanced commutation. Place gate-drive and power loops tightly within the 40-VQFN (7x5) footprint, and separate the sensitive back-EMF sense circuitry from switching nodes per the TI datasheet layout section. Use the MCT8316AEVM layout as a proven reference for the first PCB spin, and probe the DACOUT1/DACOUT2 pins during bring-up to verify internal variable behavior without firmware instrumentation.

Thông tin tuân thủ

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Không chì
Unknown
Không halogen
Unknown
Khoáng vật xung đột
Unknown

Compliance data was not included in the verified web data retrieved as of 2026-08-30. Consult the TI product page (https://www.ti.com/product/MCT8316A) quality and packing section for official RoHS/REACH status. The MCT8316A-Q1 variant exists for automotive qualification needs; the standard MCT8316A is not stated as AEC-Q100 qualified.

Dữ liệu được xác minh vào: 2026-08-30 — dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART

Tìm kiếm liên quan

MCT8316A datasheet PDF Texas Instruments MCT8316A MCT8316A sensorless trapezoidal BLDC driver MCT8316A 40-VQFN pinout MCT8316A power tool BLDC driver MCT8316A vs MCF8316A MCT8316A drop-in replacement buy MCT8316A1VRGFR price MCT8316A I2C motor driver 24V what can replace MCT8316A is MCT8316A the same as MCT8316A-Q1 sensorless BLDC driver 8A peak 40V

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Texas Instruments MCT8316A MCT8316A1VRGFR MCT8316A-Q1 MCF8316A MCT8316Z MCT8316AEVM sensorless trapezoidal control BLDC motor driver integrated FET motor driver back-EMF sensing I2C 40-VQFN (7x5) QFN package family surface mount UVLO OCP OTSD closed-loop speed control power tools drone propulsion vacuum robot buck regulator field-oriented control
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