MC121-Q1
- AEC-Q100 qualified for automotive applications
- Temperature Grade-1 : –40°C ≤ TA ≤ 125°C
- N-channel H-bridge driver with internal Hall sensor
- RDS(ON): 850mΩ (HS+LS)
- Current rating
- Configurable current limit up to 1.21A
- 0.5A rms (TA = 105oC, RθJA = 100oC/W)
- Integrated supply (VM) clamp
- Configurable speed curve and starting duty cycle
- Commutation schemes: square or
soft (up to 90o)
- Square: maximum torque/speed
- Soft: optimized speed and acoustics
- Configurable speed reference
input: PWM or DC
- Input PWM frequency range: 20 Hz to 90 kHz
- Input DC voltage range: (0-3)V
- Configurable output PWM frequency: 25 or 50kHz
- Closed loop speed control accuracy: ±3%
- PWM dithering to reduce EMI
- Configurable soft start time
- Configurable hall offset angle and time
- Speed output with 0.5x, 1x, 2/3x, or 2x multipliers
- Rotor lock detection and fault output (RD)
- Configurable PWM modes
- Hybrid, synchronous, and asynchronous
- Auto-demag for high efficiency across speed
- One-time programming (2 pages) over I2C
- Protection features
- Output Overcurrent protection with auto-restart
- Locked rotor protection (LRP) with auto-restart
- VM undervoltage lockout (UVLO)
- VM overvoltage protection (OVP)
- Thermal shutdown (TSD)
- Configurable fault retry time
- Functional features (Opeartion continues)
- when FG/RD shorts GND
- when PWM/DC shorts to VM
The MC121-Q1 is a 40V, 850mΩ rated motor driver with integrated N-channel full-bridge MOSFETs, charge pump, hall sensor, commutation control logic, and protection circuitry for single phase brushless DC motors. The hall sensor provides rotor position information to the commutation logic to maintain continuous rotor motion. The commutation logic can be programmed for square and soft PWM waveforms to reduce acoustic noise or maximize speed/efficiency.
The duty cycle of a pulse-width modulated signal or a (0-3)V DC voltage on the PWM/DC pin controls the motor speed. FG/RD pin can be configured to report the motor speed, a locked rotor condition, or fault to an external controller. The PWM/DC and FG/RD pins can be also configured as an I2C interface to support a programming (OTP) mode to configure the OTP during production.
The MC121-Q1 integrates protection features for motor and device protection. These include supply undervoltage lockout, overvoltage protection, output overcurrent protection, device overtemperature shutdown, and locked rotor protection.
The MC121-Q1 is available in two 6-pin packages: SOT23-THN and X2SON. SOT23-THN is a flat lead package with a maximum height of 1.1mm. X2SON is a non-leaded package with a max. height of 0.4mm.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | MC121-Q1 Automotive 40V , Single Phase BLDC Driver with Integrated Hall Sensor 数据表 (Rev. A) | PDF | HTML | 2026-9-29 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
MC121EVM — MC121 评估模块
MC121-Q1-SAFETY-DOCS — MC121-Q1 functional safety documents
MOTORSTUDIO-1PHASE-GUI — GUI for Single phase BLDC driver
MOTORSTUDIO-GUI — Motor Studio GUI for tuning and evaluating BLDC motor drivers
Motor Studio 是一款易于使用的图形用户界面 (GUI)，可简化我们的无刷直流 (BLDC) 电机驱动器的调优过程，从而减少器件评估和产品开发时间。GUI 允许用户快速旋转电机并优化电机运行的各个阶段，从而实现更高的电机性能、稳定的电机启动和极低的噪声。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| X2SON (DEZ) | 6 | Ultra Librarian |
| SOT-23-THN (DYM) | 6 | Ultra Librarian |