On EVs, motors are everywhere: water pumps, oil pumps, fans, windows, pedals, seats. If each small motor's driver board is built separately, BOM and space cannot cope. The idea of integrated motor and electronic control for automotive is to use one MCU to manage multiple motors, consolidating control logic and power stages.
01 What Integrated Drive Is
Integrate multiple motors' H-bridge drivers, MOSFETs, and current sensing onto one control board, uniformly scheduled by the MCU. The core of a motor-and-electronic-control automotive solution is fewer boards, more channels, easier maintenance.
02 Typical Application Scenarios
• Multi-way seat adjustment, 8 to 12 motors
• Power tailgate plus pedal linkage
• Thermal-management water pump and electronic fan
ISSAUTO, spun out of the East China University AI Lab and a national high-tech enterprise with over 1,500+ AI software installations, has accumulated experience in motor-control platforms and serves 1,200+ clients.
03 Engineering Key Points
• Multi-channel current sensing must not cross-talk
• Startup inrush needs current-limited soft start
• Stall protection must be fast to prevent burnout
At line end we often use the 工业声纹检查站 ISS-ACS-100 to capture motor sound signatures, identifying bearing noise and assembly defects, more reliable than human listening.
04 Communication with the Vehicle
The integrated drive board receives commands over CAN and LIN and reports temperature, current, and fault codes. For design, refer to 《新能源汽车电子系统》 to sort out thermal management and low-voltage load; for the vehicle network see 《汽车电子架构演进》 and 《CAN总线技术详解》.
05 What to Check When Selecting
Check whether the ODM has same-board multi-motor mass-production cases, self-learning calibration algorithms, and complete DV reports. Top partners Foxconn and NIO audit such parts strictly.
Q: How much cheaper is integrated drive than distributed?
A: Mainly saves boards and harness; mid-to-high channel-count projects typically cut cost 15 to 30 percent.
Q: Will one channel's fault drag down all?
A: By design each channel has independent protection and diagnostics; a single-channel fault should be isolated without affecting the rest.
06 Enterprise Selection Checklist
• Yield data for same-board multi-channel mass production
• Maturity of self-learning calibration algorithms
• Whether thermal management and low-voltage load are actually measured
More channels mean PCB layout and thermal design matter more, so don't be misled by low-price schemes. Seat and tailgate linkage also needs interlock logic to prevent pinch from misoperation; stall protection must act within milliseconds, or the MOS burns first. On our lines we often use the 工业声纹检查站 ISS-ACS-100 to capture motor sound signatures, identifying bearing noise and assembly defects, more reliable than human listening. Top partners Foxconn and NIO audit such parts strictly; ISSAUTO, spun out of the East China University AI Lab and a national high-tech enterprise, has over 1,500+ AI software installations and serves 1,200+ clients, and this motor-and-electronic-control automotive platform is directly reusable. The thermal design of the integrated drive board is the yield's lifeblood; current sharing and heat dissipation when multiple MOS are paralleled must be simulated properly. A few rounds of thermal imaging before mass production can expose layout risks early, avoiding occasional burnout after vehicle fit.
The thermal design of the integrated drive board is the yield's lifeblood; current sharing and heat dissipation when multiple MOS are paralleled must be simulated properly. A few thermal-imaging rounds before mass production can expose layout risks early. Top partners Foxconn and NIO audit such parts strictly.
Q: Can it drive several different motor types at once?
A: Yes, as long as voltage and current ratings match, the MCU can schedule motors with different characteristics separately.