1????е???壺
???????????????????????????????????????Χ????????????????????????????????????????
????????????????????????Χ????????????????????????仯????????????????????????????????Χ??????????????仯?????????????????????????????????????????????仯???????????????????????????????????????????“?μ??”?????γ????·??????????????????????????????ζ???????????????????????????????????????????????仯????????????????仯???????????????仯???????Ч???????????????????????·?е????仯?????????????????????е??????????????????????????“????”????????????????????????????????????????????????????????????????????????
??????????????????????????????????????????????????????????仯?????????????????????????????????????????仯????????綯????????“??е綯??”??
????????????????????????????????С?????????й??????????????????????????????????????????
2????е??????λ
??з????L
??е?λ???? (H)??????(mH)????? (uH)??1H=103mH=106uH??
3????е????
?? ?????? ?????????С?????С?
?????????????????о??????????????????о??????о?????
?? ???????? ????????????????????????????????????????????
?? ????? ?????????????????????????????
?? ??????? ????????????????????
?? ????? ??????о????????????????????????????о??????
??е???????????
4???????L
?????L?????????????????????????С?????????????????????У?????????????????????????????????????????
5???п?XL
????????????????谭??????С??п?XL????λ??????????????L??????????f?????XL=2πfL
6?????????Q
???????Q????????????????????????Q??п?XL?????Ч??????????????Q=XL/R?? ?????Q????????·???????С???????Q????????????裬????????????????????о????????????????Ч????????????й???????Q????????????????????о????????????????????????Q???
7?????????
????????????????????????????????????????????????????????????????????Q???С????????????????????????С??á????÷?????????????????
8??????????????????????????????????????????
9????????????????????????????С??????????A??B??C??D??E???????????????50mA ??150mA ??300mA ??700mA ??1600mA ??
10????????·?е?????
???????????????????????????
?????????“???????轻??”
???????????????·?У??????????????????????????????????????????????????????????????·??г???·??????????????н???????????????????迹?任???
??п?XL=2πfL ?,???L??????f?????п?????????????????????С????L???????????????仯????i/??t
???????????????????????????????????????????????С????????????WL=1/2 Li2 ??
?????????????????????????????????????
????к???????????в??????????????????????????????????????е????С?????????
11????е??????????????
????????????????????????????????????CODACA??SAMUNG??TDK??VISHAY??NEC???
11.1 ?????
???????10NH??1MH
??????????? ?????? ??????
????? J=±5% K=±10% M=±20%
??磺 0402 0603 0805 1008 1206 1210 1812 1008=2.5mm*2.0mm 1210=3.2mm*2.5mm
11.2 ??????
???????1UH??20MH
?????Ρ?????????
??磺SP43??SP54??SP73??SP75??SP104??SSP105??SPE321618??SPE322520??SPE453226??
SPE575047??????????ε?У?
SPRH73/74??SPRH124/125/127??SPQ103/104/105???????ε?У?
11.3 ??????
????CFB???????? ?迹??5Ω??3KΩ
CBH????????? ?迹??30Ω??120Ω
CBY???????? ?迹??5Ω??2KΩ
???CFB0402/0603/0805/1206/1210/1806????????飩
???SMB302520/SMB403025/SMB853025?????????????飩?????
11.4 ???????
???嶥??
??? A B C ?迹?(Ω) ?迹?(Ω)
(10mHz) (100mHz )
3.5X4.7X0.8 3.5±0.15 4.7±0.3 62±2 20 45 3.5X6.0X0.8 3.5±0.15 6.0±0.3 62±2 25 65 3.5X9.0X0.8 3.5±0.15 9.0±0.3 62±2 40 105
11.5??????
???????0.1uH??22MH
??磺0204??0307??0410??0512
11.6 ??????
???????0.1uH??3MH
???PK0455/PK0608/PK0810/PK0912
11.7 ??????
???TC3026/TC3726/TC4426/TC5026
??磨??λmm????3.25~15.88
???????о?????????о???
?????У?-2?????/???????-8?????/????-18?????/????-26?????/?????-28?????/?????-33?????/
?????-38?????/?????-40?????/?????-45??????????-52?????/????????磺????С??30??
400D?????????7.8mm??102mm????
12????????????????????
??к????????????????
12.1 ???????????????????????????????????????
12.2 ??ж????????????·???????????????·??????EMC???
12.3 ???????????????????????????????????????????????????????????
????????????EMC??EMI????
EMI????????????????????????????????????ò??????????????????
???飬???????С?
12.4 ?????????????????????????ЩRF??·??PLL??????·??????????洢????
·??DDR SDRAM??RAMBUS?????????????????????飬????????????
???????????LC????·???е?????????·????????????Χ???????50MHZ??
12.5 ???????????·????????????????????????????????????????
?????????????????????顣??????????????顣
??????С????е???????????????????? ????????????????????????
?????????????????????????????????????????1000R@100Mhz?????
??100M?????????1000??????衣?????????λ?????????????????
???迹????????迹???λ????????????datasheet?????????????迹
??????????????????100MHz??????????2012B601?????????100MHz?????
?????Impedance?600????