SLYT818 November   2021 LM74701-Q1 , LM74721-Q1

 

  1. 1 Introduction
  2. 2 Automotive reverse-battery protection with ideal diode controllers
  3. 3 TVS-less automotive reverse-polarity protection using ideal diode controllers
  4. 4 TVS-less ideal diode: mode of operation and working principle
  5. 5 External MOSFET
  6. 6 Output Capacitor (COUT)
  7. 7 TVS-less ideal diode controller EMC performance
  8. 8 Conclusion
  9. 9 Related Websites
  10. 10Important Notice

8 Conclusion

The rise in processing power levels and miniaturized electronic system sizes increases the demand for high efficiency and high power density designs. This poses new challenges for system designers particularly in designing automotive front-end power systems. The front-end reverse battery protection system directly impacts the reliability of overall system design. An ideal diode controller with an integrated VDS clamp enables an input-side, TVS-less automotive reverse-polarity protection solution resulting in reduced system cost, 70 percent smaller solution size and increased system reliability.