Technical Guide - Nichicon

1 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO., GuideFunctional Polymer Aluminum Solid Electrolytic CapacitorsManufacturing Process ofConstruction ofFPCAP is roughly the same construction as an aluminum electrolytic capacitor,and uses rolled aluminum foils in its capacitor and Characteristics of Lead ( + )Lead ( - )Al FoilAl FoilCaseSealing RubberFunctional Polymer(&Separator)Etched Al FoilFormingSlittingWindingFormingPolymer izationSealingShippingAging and InspectionFunctional polymerTab TerminalSeparator sheetAssembling parts48 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

2 , Imp / ESR ( )Frequency (Hz) Technical GuideEquivalent Circuit of Capacitor1/ C L()()222222222 RpCp1 CpRpLRpCp1 RpRsZ + + ++= ( cm)Electrolyte (Aluminum Electrolytic Capacitor)Manganese dioxide(Tantalum Solid Electrolytic Capacitor)TCNQ Complex salt(Organic Semiconductive Capacitor)PPY by Chemical Polymerization nOOOOSSPEDTF eature of Functional PolymerFPCAP differs from the aluminum electrolytic capacitor in that in place of the electrolyte,functional polymer is by Electrolytic PolymerizationConductive Polymer (PEDOT)Cp : CapacitanceRp : Equivalent parallelresistance(Insulation resistance)( Rated Voltage/LC) Rs : Equivalent seriesresistanceL : InductanceRs CpRpL49 ImpRPEDOTNICHICON CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

3 , GuideFPCAP has excellent frequency characteristic nearly equal to the film the high conductivity of the Functional polymer with an electrolyte, and adopting the winding element for layer thinness of electrolyte, the ESR is improved greatly and has the frequency characteristic that is nearly equal to the film Electrical Characteristics of CapacitorsFrequency DependenceTypical Temperature Dependence of CapacitorsThe temperature dependence of the FPCAP is that it features little change intemperature for the ESR is dominant at high range of impedance (near resonance point),the ESR value greatly affects Noise clearing ESR changes little against temperature means that Noise clearing abilitychanges little against temperature as well.

4 1k 10k 100k 1M 10M 100 MFrequency (Hz)ESR ( )TA Cap 220 FAL E-Cap 220 FFPCAP 270 F100 1k 10k 100k 1M 10M (Hz)Impedance ( ) CapAL E-capFPCAPT emperature ( C) Temperature ( C) ESR ( ) Capacitance ( C/C %) 50-60-50-40-30-20-1001020-60-40-20020406 080100 120 MLCCTA CapAL E-capFPCAPTA Cap 220 FAL E-Cap 220 FFPCAP 270 FNICHICON CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO., Dependence (kHz) (kHz)L8 series 560 F ( 8 8L)NU series 1000 F ( 8 )NU series 16V 270 F ( 8 )Impedance (m )ESR (m ) Technical Guide51 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

5 , to Soldering HeatFevering Temperature by Ripple Current110100110 Current (Arms)Fevering Temperature (oC)I2 R = T S= Tc S Tc = (I2 R) / ( S)log Tc = log (I2 R) / ( S) = log I2 + log R log S= 2 log I + (log R - log S)= 2 log I + AWhere,I : Ripple Current (Arms) R : ESR ( ) T : Fevering Temp. at Outside Wall of Capacitor ( C) Tc : Fevering Temp. at Inside of Capacitor ( C) : Heat Radiation coefficient (W/ C cm2)S : Surface Area of Aluminum Case(cm2) : Ratio of Tc/ TL8 series 560 F ( 8 8L)R7 series 820 F ( 8 )R7 series 820 F ( 10 ) condition : 260 C, 30sec C/C (%)ESR ( ) at 100kHz0 1 2 3 4 50 1 2 3 4 5 Technical GuideNS series 10V 220 F ( 10 )NS series 16V 33 F ( 7L)52 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

6 , at 105 CHigh-temperature (%)Change of CapacitanceDuration (H)Duration (H)Absolute (tan ) Change of Tangent of Loss (H)Change of Leakage CurrentAbsolute ( A)11010010100100010000 Absolute (m )Change of Equivalent Series ResistanceDuration (H)NS series 47 F ( 7L)L8 series 560 F ( 8 8L)NS series 1200 F ( 10 ) Technical Guide53 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO., of LifetimeFunctional Polymer Aluminum Solid Electrolytic CapacitorsLX = L0 10(T0-TX)/20 Calculation Formula of LifetimeLX (Hrs) =Life expectance in actual useL0 (Hrs) =Life time T0 (105 C) =Maximum operating temperature (105 C)TX ( C) =Temperature of capacitor in actual useIn general, calculation formula of lifetime of capacitors is appeared as calculation formula of lifetime on FPCAP is same as usual Aluminum capacitor.

7 Where,TX =T+ T T ( C) = Ambient temperature T ( C) = generating temperature T = ( I / I0 ) 2 T0I (A rms) = Ripple current in actual useI0 (A rms) = Maximum permissible ripple current T0 ( C) = Generated temperature value by maximum permissible ripple current [About 20 ( C) ] On the other hand, temperature Tx adds the circumference temperature T as the capacitor temperature and the generating temperature T by ripple , the generating temperature T by the ripple current is proportional to ripple current, and is shown by the following 54 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

8 , GuideFunctional Polymer Aluminum Solid Electrolytic CapacitorsDC/DC Converter Primary, Secondary Side SmoothingBack-up Capacitor for Variable Load (1)Noise 5V12 VICFPCAP 16 VFPCAP 4 VInput sideOutput sideFor PrimarySide SmoothingFor SecondarySide SmoothingIC+ CIRCUIT+5V SecondarySide SmoothingFPCAP 10 Capacitor for Variable Load (2) 5 VICFPCAP 4V55 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO., GuideRipple Removal CapabilityWe measured ripple voltage by oscilloscope for output capacitor change on thetypical chopper type DC-DC converter.

9 (described below)Examination of Same Level Residual Ripple VoltageTo obtain same level of ripple voltage to FPCAP, Low Impedance Aluminum capacitor needs 16V3300uF,even Low ESR tantalum capacitor needs 4 pcs. of same ( ) V=58mVLow ESR Tantalum Capacitor16V100uF ( ) V=76mVLow Impedance Aluminum Capacitor16V100uF ( ) V=156mVLow Impedance Aluminum Capacitor16V3300uF ( 16x25L) V=60mVLow ESR Tantalum Capacitor16V100uF ( ) X4 pcs. V=59mVComparison Between and Other Capacitors with Same CapacitanceElectronicLoadOscilloscopeSpe cimenCLDf=100kHzVOUT=5V, IOUT= ICVIN=12V56 Nichicon CORPORATION / FPCAP ELECTRONICS (SUZHOU) CO.

10 , Model of Radial lead type(L8 and S8 Series)* It is available to present the spice model of other parts for : CapacitanceRp : Equivalent Parallel Resistance(Insulation resistance) ( Rated Voltage/LC) Rs : Equivalent Series ResistanceL : InductanceCpLRsRpTypical ESL by Case SizeClassificationCase Size (mm)ESL (nH,40 MHz)Radial lead type 8L (S8) to to 8 8L (L8) to 8 to 8 (R7) to 10 to type 4 to to 8 to 10 to NumberCp ( F)Rs (m )L (nH)LC ( A)Rp (k ) Circuit of Capacitor()()222222222 RpCp1 CpRpLRpCp1 RpRsZ + + ++=Spice Model for Simulation Circuits with ComputerApplication Guide57