MCT8316Z
- 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: 5-MHz 16-bit SPI interface for device configuration and fault status
- MCT8316ZT: 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
The MCT8316Z provides a single-chip code-free sensored trapezoidal solution for customers driving 12- to 24-V brushless-DC motors. The MCT8316Z 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 implements sensored trapezoidal control in a fixed-function state machine, so an external microcontroller is not required to spin the brushless-DC motor. The 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, intended to protect the device, motor, and system against fault events.
Refer Section 9.1 for design consideration and recommendation on device usage.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | MCT8316Z Sensored Trapezoidal Integrated FET BLDC Motor Driver datasheet (Rev. B) | PDF | HTML | 2021/11/16 | ||
| Application brief | Brushless-DC Made Simple – Sensored Motor Control (Rev. C) | PDF | HTML | 2026/3/11 | |||
| Application brief | MCx8316x for Vacuum Robot Applications | PDF | HTML | 2022/9/9 | |||
| 技術文章 | What is “real-time control” and why do you need it? | PDF | HTML | 2022/4/6 | |||
| 技術文章 | Achieving a 360-degree field of view in mechanically scanning lidar with BLDC moto | PDF | HTML | 2022/1/27 | |||
| 應用說明 | Delay and Dead Time in Integrated MOSFET Drivers | PDF | HTML | 2021/8/23 | |||
| 應用說明 | How to Design a Thermally-Efficient Integrated BLDC Motor Drive PCB (Rev. A) | 2017/2/5 |
設計與開發
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MCT8316ZTEVM — 三個半全橋整合式 MOSFET 驅動器，適用感測 BLDC 梯形控制評估板
MCT8316Z 為三個半全橋整合式 MOSFET 驅動器，適用 12-V/24-V DC、8-A 峰值電流驅動之三相無刷 DC (BLDC) 馬達的感測梯形控制。其整合三個類比霍爾比較器以供轉子位置感測，可實現感測梯形 BLDC 馬達控制。MCT8316Z 支援降壓穩壓器，可透過可編程穩壓電源支援 200-mA。
此 EVM 包括板載 MSP430、MSP430FR2355，可用做與 MCT8316ZTEVM GUI 的介面。
MCT8316ZXEVM-MSP430FR2355-FW — 適用於 MCT8316Z GUI 的 MSP430FR2355 韌體
MCT8316Z-GUI — GUI for the MCT8316ZEVM
MCT8316ZT-GUI — GUI for MCT8316ZTEVM
BLDC-MOSFET-THERMAL-CALC — BLDC integrated MOSFET driver thermal calculator tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGF) | 40 | Ultra Librarian |