Dear all,
My customer want to know reason of phenomenon below,
Osc.Freq. was changed at Iout 0 to 40A load step.
Ta= 0deg.C and C8= 4700pF no change always 400kHz
Ta= -40deg.C and C8= 3300pF no change always 400kHz
Ta= -40deg.C and C8= 4700pF 400kHz->200kHz->400kHz
Customer want to use C8=4700pF because faster transient response.
Why this freq. change happen?
Thank you,
H.DOITPS40400 Freq..pptxcct.pdf