不同种类电容特性比较

,按一下以編輯母片標題樣式,按一下以編輯母片,第二層,第三層,第四層,第五層,*,INTRODUCTION,元誠科技股份有限公司,Yuan Cheng Technology Co. , Ltd,By Oliver Chen,GENERAL POPULAR CAPACITOR,Multi-layer Ceramic Capacitor,OS-CON Capacitor,Aluminum Electrolytic Capacitor,Tantalum Solid Electrolytic Capacitor,Specialty Polymer Capacitor,Polymer Organic Semi-conductive Capacitor,Film Capacitor,Multi-layer Ceramic Capacitor,Separate the system loop and the capacitors used,Digital loop,Analog loop,combined ratio,Logic loop,High Frequency loop,Power loop,Audio loop,Other loop,75%,25%,Decoupling,Back up,Major used around Digital IC to filter Noise,Smoothing,Filter,Resonant,Coupling,Impedance & ESR considered more important than capacitance,Must consider temperature characteristics and capacitance on design,Loop separated,Capacitor Functions,Factor of Sound Mechanism,(MLCC),Dielectric Constant of Material,DC Bias Voltage,Frequency Range,Layout of Mother Board,Mechanism of Sound Effect,(MLCC),V,Time,Piezo,Electric with DC-Bias,Vibration of MLCC With AC Current,ElectricalMechanical,Mother Board Resonated With MLCC,Big Sound (Like Speaker),SRF of MLCC Become Lower,Sound Effect of MLCC,Phenomenon Analysis,Understanding,Qualitative Analysis,Mechanism of Vibration,( Simulation ),Solution,for,Piezo,Effect,Quantitative Analysis,Vibration - Sound Analysis,|z|,ESR,Frequency,x,c,X,L,SRF,SRF:Series Resonance Frequency,SRF,fc,=1/2 LC,|Z|= ESR,2,+(X,C,-X,L,),2,1.if the working frequency = SRF ,X,C,-X,L,=0, |Z|=ESR,2.if the working frequency SRF,|Z| dominated by X,L,About MLCC Impedance Features,Typical ESR and ESL factors in capacitor ( 100K 10MHz ),Impedance =,R,2,+ ( 2f L 1/2f c),2,ESR (m,),ESL (,H),Multilayer,ceramic capacitors,5 30,1 2,Tantalum electrolytic capacitors,300 1000,2 6,Aluminum electrolytic capacitors,500 10000,4 10,Values of Tantalum electrolytic capacitor may vary depending on case size,FREQUENCY(KHZ),FREQUENCY(KHZ),FREQUENCY(KHZ),FREQUENCY(KHZ),X7R 1206 1UF/16V,X7R 1206 2.2UF/16V,X7R 1206 1.5UF/16V,X7R 1206 3.3UF/10V,Capacitance Characteristics of Frequency,ESR Characteristics of Frequency,Temperature Characteristics of Capacitance,No Bias,D/D converter output,D/D converter input,OS-CON,Aluminum solid capacitors with organic semi-conductive electrolyte,Features of OS-CON,OS-CON is a low ESR capacitor,ESR of OS-CON is not dependent on temperature,OS-CON has long-life,OS-CON is a capacitor that has polarity but that is strong against reverse voltage,High conductivity provides stability against temperature because has low resistance value compared to other electrolytes.,Reliability Presumption of Life,L2=L1X10,T2-(T1+,Tx,) /20,L2:Life expectance(Hrs) in actual use (temperature T1),L1:Guaranteed(Hrs) at maximum temperature in use,T2:maximum operating temperature (,),T1:Temperature in actual use (ambient temperature) (,),Tx,:Self-heating temperature by ripple current (,),Tx,=(Ix/Io),2,x,T,Io:Maximum allowable ripple current at +45, or less (Arms),Ix:Actual flow of ripple current (Arms),T varies according to case size,OS-CON Electrical Characteristics,Frequency Characteristics,Temperature Characteristics,Bias Characteristics,Temperature vs. Tan,Temperature vs. Capacitance Change,Temperature (,),Temperature (,),A 1uf/25WV,C 10uf/16WV,F 150uf/16WV,Tan,Capacitance Change ( % ),(,120,HZ),(,120,HZ),A 1uf/25WV,B 10uf/10WV,C 10uf/16WV,D 47uf/6.3WV,E 100uf/16WV,F 150uf/16WV,Temperature vs. Leakage current,(Rated Voltage),Temperature vs. Impedance,(100,KHZ),Leakage current,(uA,),Impedance (,),Temperature (,),Temperature (,),Temperature Characteristics,100,ESR(,),Temperature (,),OS=OS-CON ,Purple,Al=Al-E Cap ,Blue,Ta=Tantalum ,Green,CR(X5P)=Ceramic Cap ,Red,CR(X5U)=Ceramic Cap -,Pink,Temperature Characteristics,OS=OS-CON ,Purple,Al=Al-E Cap ,Blue,Ta=Tantalum ,Green,CR(X5P)=Ceramic Cap ,Red,CR(X5U)=Ceramic Cap -,Pink,Bias Voltage Characteristics,OS.1=OS-CON (10SL10M),-Purple,OS.2=OS-CON (30SC10M),-Light purple,CR(X5P)=Ceramic Cap(10uf/10V),-Red,CR(X5U)=Ceramic Cap(10uf/50V),-Pink,Aluminum Electrolytic Capacitors,Material of Aluminum Electrolytic capacitor,Common Application Conditions to Avoid,The following misapplication load conditions will cause rapid deterioration of a capacitors parameters.,In addition,rapid heating and gas generation within the capacitor can occur,causing the pressure relief vent to operate and resultant leakage of electrolyte.Under extreme conditions,explosion and fire ignition could happen.,The leaked electrolyte is combustible and electrically conductive,Reverse Voltage,Repeating Charge/Discharge applications,Over Voltage,Exceeding Ripple current,Operating Temperature and Frequency,(1),Effect of operating temperature on electrical parameters,a) At higher temperature,leakage current and capacitance,increase while ESR decreases.,b) At lower temperature,leakage current and capacitance,decreases while ESR increases.,(2) Effect of operating frequency on electrical parameters,a) At higher frequency,capacitance and impedance decrease,while tan,increases.,b) At lower frequency,heat generated by ripple current will,rise due to an increase in ESR.,Application guidelines,Operating Temperature and Life expectancy,The formula for calculating expected life is as follows,L1: Guaranteed life ( h ) at temperature , T1,L2: Expected life ( h ) at temperature , T2,T1: Upper category temperature (,),T2: Actual operating temperature (,),L2 = L1 X 2,T1-T2/10,*,Example *,If the specification is 2000hours at rated voltage/105,test,Actually,the capacitor surface temperature is 85,L2=2000 hours * 2,105,- 85,/10,=8000 hours,How to calculate the ripple current for actual application,If the specification is 1230mA,/rms,at 105,/100 KHz,Actual measure the capacitor surface temperature is 85,/100KHz,Maximum permissible ripple current = 1230mA*1*1.7=2091mA,/,rms,*Example*,Capacitance vs. Temperature Characteristics,Impedance , ESR vs. Frequency Characteristics,Leakage current vs. Temperature Characteristics,Tan,vs. Frequency Characteristics,Tantalum Solid Electrolytic Capacitor,Material of Tantalum solid electrolytic capacitor,Circuit Design,Item,Precaution on design,Phenomenon,(,1),working voltage,Proper voltage de-rating is applied.check working voltage,Short circuit burning,(,2),protecting resistance,Circuit resistance is small,and high inrush current is not applied?,Short circuit burning,(,3),Reserve Voltage,Reverse voltage is not applied to capacitor?polarity is correct.,Short circuit burning Leakage current increased,(,4),Ripple Voltage,Exceeding ripple voltage is applied to capacitor?,Short circuit burning Leakage current increased,(,5),Environment temperature,Temperature exceeds the limit?check the temperature limit.,Short circuit,Electrical characteristics change,(,6),Humidity,Not using under high temperature/humidity?,Short circuit,Electrical characteristics change,(,7),Frequency Dependency,Check the working circuit at high frequency?,Electrical characteristics change,Tantalum capacitor temperature de-rating voltage,Change in capacitance ( Dipped type),4.7,f/16V,Temperature (,),Capacitance change (%),Temperature Characteristics,Change in leakage current( Dipped type),4.7,f/16V,Leakage current(,A),Temperature (,),Temperature Characteristics,Frequency ( Hz ),capacitance change ( % ),Change in capacitance (Dipped type),4.7uf/16V,Frequency Characteristics,Frequency ( Hz ),Change in Tan,(Dipped type),4.7,f/16V,Tan,Frequency Characteristics,Reverse Voltage,SPECTIALTY POLYMER CAPACITOR,Material of Specialty Polymer Aluminum Electrolytic Capacitor,1000,100,10,1,0.1,0.01,TCNQ,MnO2,Electrolyte,Specialty polymer,Organic semi-conductive,Tantalum,Aluminum,SP-CAP,Conductivity ( S/cm),Material of electrolyte comparison,SPECTIALTY POLYMER CAPACITOR,Features of SP-cap, Large capacitance, Very low ESR & low impedance characteristics, Stable capacitance characteristics, High ripple current capability, Strong surge voltage characteristics,Full voltage can be applied , no voltage de-rating,Resistivity,.cm,Insulation of specialty polymer itself,Frequency Characteristics,Frequency Characteristics,Stable Temperature characteristics,Stable Temperature characteristics,(,1),SP-Al 100uf/6.3V,(2)Polymer tantalum capacitor 100uf/10V,(3)Ceramic capacitor 100uf/6.3V,(4)Low ESR tantalum capacitor 100uf/10V,Stable capacitance characteristics,(,1),SP-Al 100uf/6.3V,(2)Polymer tantalum capacitor 100uf/10V,(3)Ceramic capacitor 100uf/6.3V,(4)Low ESR tantalum capacitor 100uf/10V,Stable capacitance,Polymer Organic Semi-conductive Capacitor,POS-CAP,Features of POSCAP,*Low profile chip capacitor,*Low impedance and low ESR at high frequency,*High ripple current capability,*Excellent noise-absorbent characteristics,*Excellent temperature characteristics up to -55,*More superior rather than Tantalum-cap in safety,Frequency Characteristics,Frequency Characteristics,Film Capacitor,0.01uf/16V,0.1uf/16V,Panasonic ECHU series,Chip Film capacitor,Panasonic ECHU series,0.01uf/16V,0.1uf/16V,Panasonic ECHU series,0.01uf/16V,0.1uf/16V,Panasonic ECHU series,0.01uf/16V,0.1uf/16V,Panasonic ECHU series,0.01uf/16V,0.1uf/16V,Panasonic ECHU series,0.01uf/16V,0.1uf/16V,Type,Cost,ESR,ESL,Safety,Capacitance,Ripple current,Polarity,OS-CON,Medium,Good,Bad,Good,Good,Medium,Yes,SPCAP,Medium,Good,Medium,Good,Medium,Good,Yes,Tan-CAP,Medium,Bad,Medium,Bad,Good,Bad,Yes,POSCAP,Bad,Medium,Medium,Good,Good,Good,Yes,E-CAP,Good,Bad,Bad,Good,Very good,Medium,Yes,MLCC,Medium,Very good,Very good,Good,Bad,Good,No,Chip Film,Bad,Good,Good,Good,Bad,Medium,No,Characteristics Compared List,