STMicroelectronics AEK-MOT-8DCMH98 Half-Bridge DC Motor Driver
STMicroelectronics AEK-MOT-8DCMH98 Half-Bridge DC Motor Driver is designed to drive eight configurable channels in half-bridge or four channels in full-bridge mode. This motor driver is based on the L99MH98 octal half-bridge predriver for brushed DC motor control applications. The AEK-MOT-8DCMH98 DC motor driver features up to 30A per channel in H-bridge configuration and 15A per channel in half-bridge configuration. This motor driver includes a six-layer board, with 2 oz copper thickness on the top and bottom layers featuring optimized current handling. The AEK-MOT-8DCMH98 DC motor driver supports two types of current measurement systems, such as the classical method and the indirect method.
The AEK-MOT-8DCMH98 DC motor driver provides supply voltage monitoring, charge pump voltage monitoring, temperature warning, and overtemperature shutdown. This driver offers three diagnostic functions on the load output to detect potential short-to-ground, short-to-battery, and open-load conditions when the L99MH98 is in the off state. The AEK-MOT-8DCMH98 DC motor driver can be connected to a microcontroller board, such as the AEK-MCU-C4M3, for SPI communication and current sensing. Typical applications include seat control, steering column adjustment, gas pedal adjustment, sunroof, sliding doors, window lift, washer pump, and central door lock.
Features
- L99MH98 octal half-bridge, or quad H-bridge, predriver for DC motors in automotive applications
- Independent channel driver up to 8 high-side or 8 low-side MOSFETs
- 15A motor drive per single channel in half-bridge mode
- 30A at Vbat=12V motor drive per double channel in full-bridge mode
- Adaptive MOSFET gate control:
- Three-step gate control of external high-side or low-side MOSFETs
- Optimized electromagnetic interference (EMI)
- Up to 120mA programmable gate current
- Reduced switching losses in PWM level mode
- Protection and diagnostic features
- Watchdog timeout by MCU control board
- Drain-source monitoring for short-circuit detection
- Undervoltage lockout
- Reverse battery protection dedicated circuit
- Overtemperature warning and shutdown
- Detailed off-state diagnostic via SPI
- Programmable diagnostic load on all channels
- 1.5A to 50A load channel direct current measurement via shunt resistors
- Standardized 96-pin plug-and-play automotive unified connector to plug MCU boards (for example, AEK-MCU-C4M3 belonging to the AEK-MCU-C4MLIT3 evaluation kit)
- 112mm x 180mm compact size
- Included in the AutoDevKit ecosystem
Applications
- Seat control
- Steering column adjustment
- Gas pedal adjustment
- Sunroof
- Sliding doors
- Window lift
- Washer pump
- Central door lock
- Engine vibration compensation systems.
Related Product
STMicroelectronics L99MH98 Automotive Octal Half-Bridge Pre-Driver
Intended for DC motor control applications such as automotive power seat control.
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