STDA015 February   2026 DRV8163-Q1 , DRV8263-Q1 , LM61495-Q1 , LM70880-Q1 , LM74500-Q1 , LMR36503-Q1 , MCF8329A-Q1 , TLIN4029A-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Examples of Using 48V in Body Motor Applications
    1. 2.1 Door Module
    2. 2.2 Window Lift
    3. 2.3 Wiper
    4. 2.4 Power Seat
  6. 3Benefits of 48V Supply
    1. 3.1 Increased Integration of Half-Bridges with 48V
    2. 3.2 Size Comparison Between 48V Integrated Driver vs 12V Gate Driver
    3. 3.3 Example Placement Study
  7. 4Thermal and EMC Performance Trade-off Considerations
    1. 4.1 Conduction Losses in the MOSFETs
    2. 4.2 Switching Losses During PWM
    3. 4.3 Experimental Results Show Effect of Slew Rate on Transistor Temperature During PWM
    4. 4.4 Fast Slew Rates Impact Electromagnetic Emissions
  8. 5Summary
  9. 6About the Authors
  10. 7References

Abstract

The automotive industry is experiencing a shift towards 48V electrical systems, driven by the need for increased efficiency, higher electrical power delivery, and support for advanced features in both traditional and electrified vehicles. While this transition brings many benefits, this also presents several challenges for body motor designs commonly used in applications such as door modules, window lifts, wipers, and power seats. This paper discusses where designers can take advantage of 48V power, and the tradeoffs to be considered.