Hi,
We are trying to design 200V high voltage power supply for SI APD, LM51551 datasheet mentioned that appliation schematic can for it, as below picture.
But I have some confusing,
#1, Figure 10-7 Lidar Bias supply 1, it can provide 30~150V voltage, my understanding is that we can output 200V or higher by adjust feedback resister. Of course the NMOS Vds should be > 200V. is right?
#2, If #1 works well, why need Figure 10-8 Lidar Bias supply 2?
#3, How to evaluate the output capacity? Is it related to inductor and switch frequency, anything else?
Happy Christmas in advance.
Kent