SLYT872 November   2025 LM74700D-Q1

 

  1.   1
  2. 12
  3. 2Challenge 1: High voltage stress during reverse supply fault
  4. 3Challenge 2: Compliance to LV148 load dump and switching transients
  5. 4Single controller-based solution
  6. 5Proposed cascaded ideal diode configuration
  7. 6Component selection and test results
  8. 7Conclusion
  9. 8References

7 Conclusion

While 48V systems offer many benefits, they also bring a new set of challenges for redundant supply ORing in power distribution stages. The proposed cascaded ideal diode configuration with ground path transient clamping network enables system design with legacy 60V-rated FETs that are easy to multi-source. The proposed approach also provides adequate voltage margin for switching transients, enabling a reliable ORing solution in 48V systems.