STDA034 May   2026 F29H859TU-Q1

 

  1.   1
  2. 1Executive Summary
  3. 2Why Traction System Efficiency Matters
  4. 3Optimal Pulse Positioning: A New Modulation Strategy
  5. 4Key Challenges to Implement OPP and How TI Has Solved Them
  6. 5Synchronous PWM Pulse Generation
  7. 6SVPWM to OPP Transition
  8. 7Dynamic Response and Robust Closed-Loop Control
  9. 8Conclusion

2 Why Traction System Efficiency Matters

Because traction systems are the major consumers of the EV battery's energy and the EV battery is the costliest component of an EV, improving traction system efficiency is the most effective way to address these major OEM goals:

Table 2-1 OEM goals and common design challenge
OEM Goals Technical Design Challenge to Reach Goals
Reduce battery size and vehicle cost Improve traction system efficiency
Increase driving range to meet consumer expectations

The two components which impact traction system efficiency that can be influenced by OPP are:

  • Switching losses in power semiconductors
  • Motor conduction and harmonic losses

TI's unique OPP design finds the sweet spot in minimizing both switching and motor harmonic losses, resulting in optimized traction system efficiency.