SLVAFQ0 October   2025 TPS61299

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Start-up
    1. 2.1 Body Diode Pass
    2. 2.2 Pre-Charge
    3. 2.3 Down Mode
  6. 3Output Short Protection
    1. 3.1 Continuous Reboot
      1. 3.1.1 Continuous Reboot by Pre-charge
      2. 3.1.2 Continuous Reboot by Down Mode
    2. 3.2 Hiccup Reboot
      1. 3.2.1 Hiccup Reboot by Pre-charge
      2. 3.2.2 Hiccup Reboot by Down Mode
    3. 3.3 Boost Converter Short-Circuit Protection Behavior Summary
  7. 4Boost Converter Start-Up Behavior Summary
  8. 5References

3.3 Boost Converter Short-Circuit Protection Behavior Summary

Table 4-2 compares performances between three short-circuit protection behaviors.

Table 3-1 Comparison Between Pre-charge, Down Mode, and Hiccup
Reboot After Release Power Loss
Pre-charge Instantly
Equation 20. V i n I S C P
Down mode Instantly
Equation 21. V G S + V i n I S C P
Hiccup < twait(20ms to 80ms)
Equation 22. V i n I S C P t r e b o o t t w a i t

In conclusion, devices that require fast recovery when the short circuit releases can use pre-charge or down-mode devices. Applications that prioritize temperature rise under output short conditions benefit from hiccup mode, which provides lower power loss.