MCT8316A
- 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
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.
Documentation for reference:
- Refer E2E FAQ for clarification.
- Refer MCT8316A tuning guide
- Refer to the MCT8316A EVM GUI
技術文件
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
MCT8316AEVM — 適用三相無感測器梯形整合式 MOSFET BLDC 馬達驅動器的 MCT8316 評估模組
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 |