SLUAB24 March   2025 TPS56C230

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2EN to VCC Start-up Time
  6. 3EN Internal Pull-down Current
  7. 4Summary
  8. 5References

4 Summary

This application note details the important sequencing signals, voltage thresholds, time delays, such as EN to VCC start-up time and EN internal pull-down, and voltage thresholds for sequencing using the TPS56C230. VCC starts rising after tVCCDLY = 13.5us (typical) delay from EN crossing 0.932V (typical) threshold as detailed in EN to VCC Start-up Time. A 2uA internal pull-down current is seen on EN once EN ≥ 0.8V. If VCC ≥ 0.7V and EN-VCC ≥ 0.7V, then an additional momentary 28uA internal pull-down current is seen on EN. Internal pull-down current recovers to 2uA as EN-VCC < 0.7V, which is detailed in EN Internal Pull-down Current.