current sensing scheme in DC-DC converter

pbunker · 发表于 2006-2-10 10:23:00

I known that there are some current sensing schemes in DC-DC converters, such as Sense Resistor, RDS Sensing, SenseFETs. But to minimum the current limit propogation deay for the peak current check, which one is the best method?

wangdong0110 · 发表于 2006-2-11 15:46:00

In my opinion, sense resistor is better than the others.

coma · 发表于 2006-3-2 10:36:00

our company use Sense Resistor

jamesdbx · 发表于 2006-3-26 03:50:00

<P>当然是用检测电阻好了,精确,但用检测电阻增加了成本!用RDSON检测节省了成本,但不精确,因为RDSON的值随温度的升高而升高,变化很大!用电感DCR检测效果最差,DCR除了会随温度变化而变化外,DCR本身值误差也很大,精度很差</P>

johnson_zhan · 发表于 2006-8-30 16:57:00

现在大家的想法都是用最少的钱做出可以用的东西，所以COST是大家都必须考虑的问题
SENSER 电阻当然好，但是成本高，
DCR是现在的主流

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[讨论] current sensing scheme in DC-DC converter