L3e-L6e Motor and Body Controller

48V – 15.5kVA boost Integrated Body-Motor Controller (IBMC)

The IBMC48V280A1 fills a market gap by offering a fully integrated motor – body control solution for 48V operated light electric vehicles (classes L3e-L6e).

It is designed specifically with e-Mopeds, e-Motorbikes, small 4-wheel city cars, e-Vehicles (L3e-L6e) in mind. It controls one or – thanks to its master-slave scalability – multiple motors.

The integrated body module processes all input/output signals from switches, throttle and brake, lights and the display. Communication with BMS for range estimation and battery supervision. The motor controller module provides 3 drive modes (quick customization available).

The IBMC48V280A1 controller is offered in a standard version for LEVs with integrated “On Board Diagnostic” (OBD-2) support.

Motor support

Traction inverter for 3-phase electric motors having: DC-Link: 48V (nominal), DC-Link Range: 36V – 54V, Current: 115A (rms continuous), 280A (rms boost for 10s), Power: 6.3kVA (continuous), 15.5kVA (boost); Power density: 10kVA/liter; Specific Power: 9kVA/Kg. Support for multiple motor types (including PMSM, TFM, BLDC). Full access motor control parameters and torque mapping.

Flexible support of position sensors and interfaces including digital Hall sensors, encoders (optional Sin/Cos analog sensors).  Support of motor temperature sensors.

Easy motor specific adaption independently of motor manufacturer. In case you do not have access to the detailed technical motor specification, I&M offers to characterize the motor for you on our in-house test bench.

High Efficiency Power Electronics and Motor Algorithms

Up to 98% efficiency. “Field Oriented Control“ (FOC) algorithm. Highest performance and maximum torque under all operating conditions and speeds with “Full Field Weakening“ and “Maximum Torque per Ampere“ (MTPA) support.

High energy efficiency due to recuperative breaking option. Minimum motor harmonics and torque ripple.

Additional functions

  • Master/slave configuration for multiple motor drive.
  • Diagnostic and safety functions.
  • System protection against over-voltage, over-current, over-temperature.
  • Controlled derating in case of system protection.
  • Vehicle management.
  • Body Motor Controller:
    • Dedicated outputs for lights, horn, auxiliaries and charging.
    • Inputs for switches, throttle and brake, sensors.
  • Battery supervision.


A CAN 2.0 bus up to 1Mbit/s connects the IBMC to VMU, BMS and optionally more IBMC units in slave mode. The communication to BMS ensures adavanced range estimation and battery supervision features. The same CAN bus also serves as interface for SW updates, system monitoring and diagnostic checks supported by UDS (Unified Diagnostic Services) protocol according to OBD-2 standard.

Mechanical Design

IBMC48V280A1 mechanical housing has an aluminium base plate acting as a heatsink for the power electronic circuits, and shall be connected either to chassis or to an air cooler for proper functionality.

The mechanical housing has been designed to fulfil the following characteristics:

  • Weight: 780g
  • Dimensions (LxWxH): 152x142x44mm
  • Grade: IP67

Customization Required?

In case the IBMC functionality meets your general requirements but your specific application needs some adaptions please contact us. Due to the modular design many modifications can me made quickly and with low effort. Options include e.g. changes of nominal operating voltage to 60V or 72V, adapted body features, modified motor control algorithms etc.

Contact us and learn more

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