MCF8316A
- Three-phase BLDC motor driver with integrated
sensorless motor control algorithm
- Code-free Field Oriented Control (FOC)
- Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET)
- 5-point configurable speed profile support
- Windmilling support through forward resynchronization and reverse drive
- Analog, PWM, freq. or I 2C based speed input
- Configurable motor startup and stop options
- Anti-voltage surge protections prevents overvoltage
- Improved acoustic performance with automatic dead time compensation
- 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 R DS(ON) (HS + LS) at T A = 25°C
- Low power sleep mode
- 3-µA (maximum) at V VM = 24-V, T A = 25°C
- Speed loop accuracy: 3% with internal clock and 1% with external clock reference
- Customer-configurable non-volatile memory (EEPROM) to store device configuration
- Supports up to 75-kHz PWM frequency for low inductance motor support
- Does not require external current sense resistors, built-in current sensing
- 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 I 2C interface
The MCF8316A provides a single-chip, code-free sensorless FOC solution for customers driving speed-controlled 12- to 24-V brushless-DC motors (BLDC) or Permanent Magnet Synchronous motor (PMSM) up to 8-A peak current. The MCF8316A integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low R DS(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.
The algorithm configuration can be stored 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 I 2C command. There are a large number of protection features integrated into the MCF8316A, intended to protect the device, motor, and system against fault events.
Documentation for reference:
- Refer E2E FAQ for clarification.
- Refer MCF8316A tuning guide
- Refer to the MCF8316A EVM GUI
技術文件
設計與開發
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MCF8316AEVM — 適用三相無感測器 FOC 整合式 MOSFET BLDC 馬達驅動器的 MCF8316 評估模組
MCF8316 為三個半全橋整合式 MOSFET 驅動器，適用 4.5-V 至 35-V、8-A 尖峰電流驅動之三相無刷 DC (BLDC) 馬達的無感測器 FOC 控制。MCx8316 整合降壓穩壓器，可透過可編程穩壓電源支援 200mA。
此 EVM 包括板載 MSP430 (MSP430FR2355)，可用做與 Motor Studio (MOTORSTUDIO) GUI 連接的介面。
MOTORSTUDIO — Motor Studio GUI for tuning and evaluating BLDC motor drivers
Motor Studio 是簡易型圖形使用者介面 (GUI)，可簡化無刷 DC (BLDC) 馬達驅動器的調節程序，縮減裝置評估及產品開發時間。GUI 可讓使用者快速啟動馬達，並將各種馬達運轉階段最佳化，以達到最高馬達性能，穩定馬達啟動與最低雜訊。
BLDC-MOSFET-THERMAL-CALC — BLDC integrated MOSFET driver thermal calculator tool
TIDA-010951 — 具有 85 至 265VAC、0.92PF 單級 PFC 的 24V、35W 無感測器 FOC BLDC 參考設計
為了實現能源效率，吊扇和通風風扇從簡單的 AC 感應馬達移至無刷 DC (BLDC) 馬達。此參考設計透過使用 85 至 265VAC 的通用主電源供應器輸入，利用單級功率因數修正隔離返馳轉換離線電壓，以因應前述更高效率及功率因數的挑戰，且可在 24VDC 下達到最高 0.92pF。此設計也結合了完全整合且受到妥善保護的單晶片，可進行無感測器磁場定向控制 (FOC) 無刷馬達控制。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGF) | 40 | Ultra Librarian |