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

3.1.1 Continuous Reboot by Pre-charge

TPS61022 behaves the same way as start-up during output short situations. After Vin drops below Vout, the device stops switching and enters pre-charge mode where current limitation occurs.

TPS61022 Into Short-Circuit Waveform Figure 3-1 TPS61022 Into Short-Circuit Waveform

The device continuously maintains pre-charge until the short circuit is released and the device is able to reboot.

TPS61022 Short-Circuit Release Waveform Figure 3-2 TPS61022 Short-Circuit Release Waveform