[SI-LIST] 答复: max transient current in target impedance calculation
- From: Zhangkun <zhang_kun@xxxxxxxxxx>
- To: "'Wu, Jing'" <Jing.Wu@xxxxxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Sat, 28 Jun 2008 17:47:27 +0800
Hi Jing
There is a simple method to determine teh max transient current, equal =
to
half of the max current. However, the target impedance would be too =
small to
achieve. I think target impedance would should not be =
frequency-independent.
Maybe you could model the current at first.
Best Regards
Zhangkun
2008.6.28=20
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=D6=F7=CC=E2: [SI-LIST] max transient current in target impedance =
calculation
Hi, All:
Could anyone clarify how to determine the max transient current in
calculating the target impedance of PDS? Some people said the worst case
I(t) curve first need to be generated and then FFT needs to be performed =
to
get I(f) and finally Z(f) can be determined from Vrippl(f) and I(f).
Some people said max transient current can be roughly estimated as half =
of
the max current and max current can be determined from power =
consumption.
Can the experts comment on different methods?
Thanks,
Jing
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