三洋固态电容OSCON应用.pdf

Aluminum Solid Capacitors with Conductive Polymer Contents ContentsContents An example of adoption for desktop PC s CPU power supply Capable of responding to large current transition at high speed Back up Capacitor Smoothing Capacitor An example of adoption for power condition of photovoltaic system Bias characteristic problem solving and long life offering An example of adoption for LCD TV Reduction of component and improvement of low temperature characteristics from aluminum capacitors circuit LC filter Feature of OS CON Equivalent circuit of OS CON Feature of OS CON Feature of OSFeature of OS CONCON Feature of OS CON OS CON is a low ESR capacitor Allowing large ripple current Able to discharge rapidly ESR of OS CON is not dependent on temperature Ideal for devices that can be used at low temperatures 0deg C or less OS CON have a long life At 85 deg C 50 000h life time expectable SVPD SVQP SEQP SVPS SH series Adoption for PC mother boardAdoption for PC mother boardAdoption for PC mother board An example of adoption for desktop PC s CPU power supply Capable of responding to large current transition at high speed Back up Capacitor Adoption for PC mother boardAdoption for PC mother boardAdoption for PC mother board Function as backup capacitors 200ns div 24 66A div Large current transition at high speed Core current 98 5A 5A Slew rate 375A us 4SEPC560MX 10pcs Adoption for PC mother boardAdoption for PC mother boardAdoption for PC mother board Reason for adoption Aluminum Electrolytic Capacitors cannot respond to high speed load change in large current because of the large ESR ESR disturbs rapid electrical charge and discharge OS CON have Super Low ESR 5mOhm Available to supply current to CPU rapidly OS CON can support stable operation of the load An example of adoption for power conditioner of solar energy generation system An example of adoption for power conditionerAn example of adoption for power conditioner of solar energy generation systemof solar energy generation system Smoothing Capacitor An example of adoption for power conditioner of solar energy generation system By adopting OS CON the problem of bias voltage characteristics of MLCC can be solved and life time can also be prolonged compared with the case of adopting Al electrolytic capacitor An example of adoption for power conditioner of solar energy generation system An example of adoption for power conditionerAn example of adoption for power conditioner of solar energy generation systemof solar energy generation system Solar energy generation system 1 Solar battery module It is installed on the roof etc and generates DC power from sunlight Electric equipment at home Power conditioner DC power is converted into AC power for home appliances Solar battery module 1 DC power produced by the solar battery is supplied to the power conditioner AC power converted by the power conditioner is supplied to the home electric equipment An example of adoption for power conditioner of solar energy generation system An example of adoption for power conditionerAn example of adoption for power conditioner of solar energy generation systemof solar energy generation system DC 330V 470uH DC DC 330V 15V Circuit board for controller of Inverter Power conditioner MLCC2525SVPD10MSVPD10MPower supply for controller An example of adoption for power conditioner of solar energy generation system An example of adoption for power conditionerAn example of adoption for power conditioner of solar energy generation systemof solar energy generation system Reason for adoption Capacitance doesn t decrease even if voltage is applied The capacitance of MLCC decreases OS CON has long life time because it is a solid capacitor Life time of Al electrolytic capacitor is prolonged twice by 10 deg C reduction 4 times life time expansion by 20 deg C reduction Life time of OS CON is prolonged 10 times by 20 deg C reduction Adoption for LCD TV Adoption for Adoption for LCDLCD TVTV An example of adoption for LCD TV Reduction of component and improvement of low temperature characteristics from aluminum capacitors circuit LC filter Adoption for LCD TV Adoption for LCDAdoption for LCD TVTV Function as LC filter 100100uS div uS div 5mV div5mV div 17 517 5mVpmVp p p 2626mVpmVp p p 2020mV divmV div Al E 16V 470uF x 2pcs Initial Coil Al E ALAL E EALAL E E 2222uHuH B B B A A A Adoption for LCD TV Adoption for LCDAdoption for LCD TVTV 100100uS div uS div 5mV div5mV div ImprovedImproved 4SVPC330M x 1p 10 610 6mVpmVp p p OS CONALAL E E B B B Adoption for LCD TV Adoption for LCDAdoption for LCD TVTV OS CON 4SVPC330M B OSOS CONCON ALAL E E ALAL E EALAL E E 2222uHuH Al E 16V 470uF x 2pcs AB ReplaceReplace Reducing the number of parts and mounting area Excellent noise reduction capability brought by low ESR characteristic Summary of OS CON applicationSummary of OSSummary of OS CON applicationCON application IC Vin Vout Smoothing Capacitor in I O Backup Capacitor By Pass Capacitor Main Application of OS CON Capacitor for noise reduction LC circuit or only C OS CON Equivalent circuitOSOS CONCON Equivalent circuitEquivalent circuit Problems of conventional equivalent circuit The engineers who use circuit simulator is increasing to reduce circuit design period in recent years In case of simulating the CPU circuit which needs severe voltage precision they have to consider parasitic resistance and inductance of circuit pattern to pursue the precision of simulation In such a situation regarding the back up capacitors simulation models whose characteristics are closer to actual measurement value are needed Problems of conventional equivalent circuit Problems of conventional equivalent circuitProblems of conventional equivalent circuit In case of conventional simulation of power supply circuit equivalent circuits of ideal capacitors as shown in Fig 1 is used There is no problem when confirming ripple voltage and current by using this type of equivalent circuit But it is not sufficient for more accurate simulation such as simulating load change of CPU And as a result the difference between actual value of circuit and simulation result may be considerable This is because the frequency characteristics of ESR and capacitance is not reflected Fig 1 Equivalent circuit for advanced simulation Equivalent circuit for advanced simulationEquivalent circuit for advanced simulationEquivalent circuit for advanced simulation We have developed equivalent circuit as shown in Fig 2 By adopting this circuit frequency characteristics of the capacitor becomes closer to actual measurement value This circuit is effective for precise circuit simulation whose result is closer to the actual behavior of the circuit Fig 2 Comparison of frequency characteristics between Actual value and simulated value of Impedance ESR Comparison of frequency characteristics between Comparison of frequency characteristics between Actual value and simulated value of Impedance ESRActual value and simulated value of Impedance ESR 1 10 100 1000 10000 0 1110100100010000100000 frequency kHz Impedance ESR m ohm Measured Value Z Simulated Value Z Measured Value ESR Simulated Value ESR 1 10 100 1000 10000 0 1110100100010000100000 frequency kHz Impedance ESR m ohm Measured Value Z Simulated Value Z Measured Value ESR Simulated Value ESR Characteristics of equivalent circuit