Hi team,
I made a curcuit in the form of figure 30 of the datasheet. I want a output of 300V but only get 92V. and can not get higher. how I should manage the value of the curcuit to get my goal?
Thank you very much for your help.
Best regards,
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Hi team,
I made a curcuit in the form of figure 30 of the datasheet. I want a output of 300V but only get 92V. and can not get higher. how I should manage the value of the curcuit to get my goal?
Thank you very much for your help.
Best regards,
Hi team,
Any update?
Thanks.
Best regards,
Hi Xi,
Thank you for your help.
about the schematic, it is the same as the figure 30 of the datasheet. input voltage is 24 , and to the scale resistors, they are 1k,and 100k. the output reached 90V, then ,get lower and lower slowly. as to the output current , it's very small, no more than 1mA.
hope to recive from you.
Best Regards
Hi Zhonghui,
I advise to take a look at the following reference designs and see if they can help.
https://www.ti.com/tool/PMP10077 - This reference design uses LM3478EVM, but the base level design should be the same. You will need to change the feedback resistors to generate the 300V.
PMP8621 and PMP20183 share a similar approach in that a charge pump stage is added after the initial boost stage to generate very high output voltages.
Can you share your modified schematic?
Thanks,
Richard