Hello,
I have an application where we are using some TPS22990 load switches for different power rails but none higher than 3.3 VIN with a 5V bias. On the datasheet, besides the max rating, it says the following about the CT pin:
9.3.2 “Adjustable Rise Time The TPS22990 has controlled rise time for inrush current control. A capacitor to GND on the CT pin adjusts the rise time. Without any capacitor on the CT, the rise time is at its minimum for fastest timing. The voltage on the CT pin can be as high as 15 V; therefore the minimum voltage rating for the CT capacitor must be 25 V for optimal performance…”
We have gone ahead and done some lab measurements and observed the CT pin (for 3.3Vin and 5V bias) is at a ~8.2V level. We suspect that the 15V mentioned above is only seen when the device is under max conditions of 5.5Vout and 10A load. Could you provide us with information assuring us what we might see for our detailed application across temperature?
Thanks,
Josue
