CT描述
where CT is in Farads, and RT is in Ohms and tOSC is in
seconds. CT can range from 100pF to 880pF. Please
note that a large CT and a small RT combination will result
in extended fall times on the CT waveform.
RT描述
where RT is in Ohms and IRT is in Amperes. RT can
range from 40k to 120k Soft start charging and discharging
current are also programmed by IRT .
這樣最低的頻率是
t=(5*120*880/48)+120=11uS
f=90.9K
我想工作在15KHZ是不是不能使用呢?為什么UCC3895不能工作在低頻方式?