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AN-1368 アプリケーション・ノート - analog.com

AN-1368 : Jefferson Eco Aldrick Limjoco Rev. 0 REVISION 2015 analog Devices, Inc. All rights reserved. 105-6891 1-16-1 03 5402 8200 532-0003 3-5-36 06 6350 6868 RF IC

AN-1368 アプリケーション・ノート フェライト・ビーズの特性を知る 著者: Jefferson Eco、Aldrick Limjoco Rev. 0 アナログ・デバイセズ社は、提供する情報が正確で信頼できるものであることを期していますが、その情報の利用に関して、あるいは利用によって

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Transcription of AN-1368 アプリケーション・ノート - analog.com

1 AN-1368 : Jefferson Eco Aldrick Limjoco Rev. 0 REVISION 2015 analog Devices, Inc. All rights reserved. 105-6891 1-16-1 03 5402 8200 532-0003 3-5-36 06 6350 6868 RF IC

2 1 1 IC DC LC A MHz ADP2120 2 A DC-DC ADP5071 POWERSUPPLYANALOGSUPPLYDIGITALSUPPLYFERR ITEBEAD13359-001 1.

3 IC AN-1368 Rev. 0 2/ 11 .. 1 .. 2 .. 3 DC .. 4 LC .. 6 ..9 .. 11 .. 11 8/15 Revision 0: Initial Version AN-1368 Rev. 0 3/ 11 3 ZRX Z R X EMI 2 X = R R 0200400600800100012001101001000 IMPEDANCE ( )FREQUENCY (MHz)RXCROSSOVERFREQUENCYZINDUCTIVE13359 -002 CAPACITIVERESISTIVE 2.

4 Tyco Electronics BMB2A1000LN2 ZRX 3 RDC DC CPAR LBEAD RAC AC AC RDCCPARRACLBEAD13359-003 3. 3 GHz Tyco Electronics BMB2A1000LN2 DC BMB2A1000LN2 ZRX 4 ADIsimPE ADIsimPE SIMetrix/SIMPLIS 0200400600800100012001101001000 IMPEDANCE ( )FREQUENCY (MHz)RXZ13359-004Z = R; RACZ XL; LBEADZ |XC|;CPAR 4.

5 BMB2A1000LN2 ZRX ZRX Z XL LBEAD fXLLBEAD = 2 1 f f = MHz XL MHz 233 1 LBEAD H ZRX Z |XC| CPAR ||21 CPARXfC = 2 f f = 803 MHz |XC| 803 MHz 2 CPAR pF AN-1368 Rev. 0 4/ 11 DC RDC 300 m AC RAC RAC Z RDC RDC RAC k ADIsimPE DC 6 0200400600800100012001101001000 IMPEDANCE ( )FREQUENCY (MHz)13359-005 ACTUAL MEASUREMENTSIMULATION 5.

6 13359-205R2AC 1AI1 IMPEDANCE300m FL1 6. DC DC DC DC 100 MHz 2 DC DC DC

7 2 DC 7 50 % 90 % 050100150200250300350400450012345 INDUCTANCE (nH)DC BIAS CURRENT (A)MPZ1608S101A(100 ,3A,0603)742792510(70 ,6A,1812)UP TO 90% DECREASEIN BEAD INDUCTANCEAT 50% RATED CURRENT13359-006 1. DC 20 % 2 20 % 6 A 30 % 3 A 15 % AN-1368 Rev. 0 5/ 11 DC EMI DC 8 9 0204060801001201401601101001000 IMPEDANCE ( )FREQUENCY (MHz)0mA100mA250mA500mA750mA1000mA1500mA 2000mA3000mA13359-007 8.

8 DC TDK MPZ1608S101A 0204060801001201101001000 IMPEDANCE ( )FREQUENCY (MHz)13359-0080mA100mA250mA500mA1000mA15 00mA2000mA3000mA4000mA5000mA 2. DC Wurth Elektronik 742 791 510 8 9 100 MHz 50 % TDK MPZ1608S101A 100 3 A 0603 100 10 Wurth Elektronik 742 792 510 70 6 A 1812 70 15 DC 10 100 3 A 1 F DC 11 70 60 50 40 30 20 LOSS (dB)FREQUENCY (MHz)IBIAS = 0mAIBIAS = 100mAIBIAS = 250mA13359-009 10.

9 DC + FERRITE BEAD:TDK MPZ1608S101A(100 , 3A, 0603)CAPACITOR:MURATAGRM188R61A105KA61(1 F, X5R, 0603)IBIAS13359-209 11. 3 A DC 250 mA 7 1 MHz 15 dB DC DC AN-1368 Rev. 0 6/ 11 10EN1 VIN9 SYNC/MODE2 PVIN8 PGOOD3SW7 TRK4 PGND6FB5 GNDR210k VIN5 VCIN22 FR110 RL10 12.

10 DC + ADP2120 12 FPWM ADP2120 11 FPWM ADP2120 FPWM ADP2120 13 DC (dB V)FREQUENCY (MHz)ADP2120 NO LOAD OUTPUT SPECTRUMADP2120 + UNDAMPED BEAD-C, ILOAD= 250mAADP2120 + UNDAMPED BEAD-C, ILOAD= NO LOAD13359-011 13. DC + 13 180 kHz 250 mA 370 kHz MHz 30 dB 250 mA 18 dB LC DC/DC Q 14 TDK MPZ1608S101A 20 MHz 30 MHz


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