SLVAG09 September   2025 TPS1HTC100-Q1 , TPS1HTC30-Q1 , TPS2HC08-Q1 , TPS2HCS08-Q1 , TPS482H85-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Capacitive Load Nature
  5. 2Current Limit and Thermal Protection
  6. 3Test Setup and Conditions
    1. 3.1 Probe and Jumper Configuration
  7. 4Results
    1. 4.1 Example Waveforms
    2. 4.2 48V Application Devices
  8. 5Additional Information
  9. 6Summary
  10. 7References

4.1 Example Waveforms

Cursor a - the switch is enabled. Cursor b - the capacitor is fully charged. The red arrow shows the inrush current that occurs before the current limit loop asserts.

Capacitive Load Charging Behavior - No Thermal Fault
A. TPS1HTC30-Q1, CL lower limit – 2A, 100 uF, 25°C
Figure 4-1 Capacitive Load Charging Behavior - No Thermal Fault

The device is eventually able to charge after turning on or off (auto-retry) several times.

Capacitive Load Charging Behavior - Thermal Fault
A. TPS1HTC30-Q1, CL midpoint – 5A, 220 uF, 25°C
Figure 4-2 Capacitive Load Charging Behavior - Thermal Fault

The device is not able to charge the output to VS.

Capacitive Load Charging Behavior - Fail Case
A. TPS1HTC30-Q1, CL upper limit – 10A, 180 uF, 25°C
Figure 4-3 Capacitive Load Charging Behavior - Fail Case