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output error when using ADP5054,PLEASE HELP!

Question asked by alex880226 on Oct 26, 2016
Latest reply on Oct 31, 2016 by alex880226

to be simple,i have designed one circuit according to adp5054 ref,the setting as follows:

input:12v

output:

mode:FPWM

freq:600khz

ch1:1.2v

ch2:1.4v

ch3:2.5v

ch4:3.3v

the circuit as follows:

and now a part of output is error:

ch1:3.5v not 1.2v!!!!

ch2:2.5v not 1.4v!!!!

ch3 and ch4 is okay,

please help,thanks!!!!!

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