Tool/software:
Hi
Regarding the switching frequency of TPS63900, there are the following questions:
1.) The datasheet mentions..."The switching frequency of the TPS63900 device varies with the operating conditions: it is lowest when IO is low and increases smoothly as IO increases."
If the output current is 0.1mA, the operating frequency of the converter is 350Hz, is that true?(As shown below picture)
2.) If the operating frequency of the converter will adjust itself with different output currents, then doesn’t the value of the inductor need to be adjusted?
Because the operating frequency range of TPS63900 is 4Hz to 2MHz, but the inductance of TPS63900EVM is 2.2uH, can it work under various currents?
Br
Jacky