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K-SIM Usage and Techniques for Simulating KEMET Capacitors

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K-SIM Usage and Techniques for Simulating KEMET Capacitors

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Capacitors are more than just a couple electrode plates separated by a dielectric. KEMET offers an interactive online tool to simulate capacitor performance with Voltage, Temperature, and Frequency. The tool is available at http://ksim.kemet.com/.

This presentation reviews some of K-SIM's capabilities and techniques for using it.

Capacitors are more than just a couple electrode plates separated by a dielectric. KEMET offers an interactive online tool to simulate capacitor performance with Voltage, Temperature, and Frequency. The tool is available at http://ksim.kemet.com/.

This presentation reviews some of K-SIM's capabilities and techniques for using it.

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K-SIM Usage and Techniques for Simulating KEMET Capacitors

  1. 1. Capacitor Simulation Techniques
  2. 2. © 2016 KEMET Corporation K-SIM Usage and Techniques Simulating KEMET Capacitors Wilmer Companioni Technical Marketing Engineer
  3. 3. © 2016 KEMET Corporation Agenda • Brief overview of capacitors • Discussion of pros and cons • K-SIM capacitor simulation tool capabilities • Live Demo? • Q&A
  4. 4. © 2016 KEMET Corporation Tantalum Sintered tantalum powder with an oxide dielectric and a cathode material. Capacitors More Than Just Parallel Plates MLCC Laminated layers of electrodes separated by ceramic dielectric material.
  5. 5. © 2016 KEMET Corporation Which one do I choose? Type Pros Cons Notes Ceramic Small, Med Cap, Wide Temp, Wide Voltage, Low ESR Voltage Effect*, Temp Effect, Piezo*, Notch VCC and Piezo are for non-C0G. Tantalum Volumetric Efficiency, Wide Band, Stability “Low” temp, “Low” Voltage, Large Footprint Temp<125C Voltage<75V Film High Cap, High Voltage Limited Temperature Film material determines temp  There is no such thing as an ideal capacitor.  The application will be the primary factor that determines what is the best capacitor to use.
  6. 6. © 2016 KEMET Corporation How to determine capacitor’s performance K-SIM: KEMET’s primary component simulation tool Navigate to ksim.kemet.com in any browser (even mobile!) Determine: • Impedance and ESR • Capacitance and Inductance • Current and Voltage • Temperature Rise • Scattering Parameters • SPICE model • Effect of combined Impedances • Export of SPICE models
  7. 7. © 2016 KEMET Corporation Finding Impedance and ESR What is the impedance and ESR of C1206C154K2RAC at a frequency of 1MHz with a bias of 50V at 85°C? © 2016 KEMET Corporation
  8. 8. © 2016 KEMET Corporation Finding Impedance and ESR • What is the impedance and ESR of C1206C154K2RAC at a frequency of 1MHz with a bias of 50V at 85°C? Select Impedance and ESR as Plot Type Set temperature to 85°C Set Voltage to 50V Move crosshair to 1MHz Get data: Z=1.263Ω ESR=24.029mΩ
  9. 9. © 2016 KEMET Corporation Finding Capacitance and Inductance What is the capacitance and inductance of T598D107M016ATE050 at 125°C with a 16V bias at 100kHz? © 2016 KEMET Corporation
  10. 10. © 2016 KEMET Corporation Finding Capacitance and Inductance • What is the capacitance and inductance of T598D107M016ATE050 at 125°C with a 16V bias at 100kHz? Change plot to Capacitance and inductance Change temperature to 125°C Change voltage to 16V Move crosshair to 100kHz Get Data: C(calc)=113.88μF C(meas)=127.27μF L(calc)=2.34nH L(meas)=N/A
  11. 11. © 2016 KEMET Corporation Finding Maximum Allowable Ripple Current What is the maximum allowable ripple current for C1206G105K3RAC at 130°C and 3MHz? © 2016 KEMET Corporation
  12. 12. © 2016 KEMET Corporation Finding Maximum Allowable Ripple Current • What is the maximum allowable ripple current for C1206G105K3RAC at 130°C and 3MHz? Change plot to Current and Voltage Set the temperature Move crosshair to 3MHz Get Data: I=9.963A V=412mV
  13. 13. © 2016 KEMET Corporation Finding the temperature rise given ripple How much will the temperature rise on T521X337M016ATE025 at 85°C and 8V bias at 2A and 500kHz? © 2016 KEMET Corporation
  14. 14. © 2016 KEMET Corporation Finding the temperature rise given ripple • How much will the temperature rise on T521X337M016ATE025 at 85°C and 8V bias at 2A and 500kHz?? Change plot to TempRise Set temperature Set Voltage Move crosshair to 2A Get Data: ΔT=10°C
  15. 15. © 2016 KEMET Corporation Finding capacitance with applied DC Bias How much capacitance is available with a C0805C224K5RAC when 35V is applied? © 2016 KEMET Corporation
  16. 16. © 2016 KEMET Corporation Finding capacitance with applied DC Bias • How much capacitance is available with C0805C224K5RAC when 35V are applied? Change plot to Capacitance vs. Vbias(DC) Move crosshair to 35V Get Data: Cap drops by 40.5%
  17. 17. © 2016 KEMET Corporation Finding the equivalent circuit model What is the lumped circuit element model for T591X476M035ATE070 at 100kHz at 125°C © 2016 KEMET Corporation
  18. 18. © 2016 KEMET Corporation Finding the equivalent circuit model • What is the lumped circuit element model for T591X476M035ATE070 at 100kHz at 125°C Change plot to Model Set temp to 125°C Move crosshair to 100kHz Get Data Export Model Netlist
  19. 19. © 2016 KEMET Corporation Exporting Scattering Parameters How to determine the S-parameters for C0402C508K8GAC at 50Ω in series? © 2016 KEMET Corporation
  20. 20. © 2016 KEMET Corporation Exporting Scattering Parameters • How to determine the S-parameters for C0402C508K8GAC at 50Ω in series? Change plot to Sxx vs Freq. Select Series Click Export S2P
  21. 21. © 2016 KEMET Corporation Finding Combined Impedances What is the combined impedance of multiple parts in parallel? © 2016 KEMET Corporation
  22. 22. © 2016 KEMET Corporation Finding Combined Impedances • Power distribution circuits usually consist of specifically selected capacitors in parallel in order to meet impedance targets. PDN Power Flow Stepped Load Power Source Response Time: 100’s ps 1’s ns 10’s ns 100’s ns 1’s ms Frequency: 1 GHz 100 MHz 10 MHz 1 MHz 100 kHz mP VRM Cdie Cpackage Cmid Cbulk
  23. 23. © 2016 KEMET Corporation Finding Combined Impedances • What is the combined impedance of multiple parts in parallel? Select more parts Enter quantity of parts Combine Impedances
  24. 24. © 2016 KEMET Corporation Comparing performance under multiple conditions How do the Impedance and ESR of C1812G105K5RAC change over temperature? © 2016 KEMET Corporation
  25. 25. © 2016 KEMET Corporation Comparing performance under multiple conditions • How do the impedance and ESR of C1812G105K5RAC change over temperature? Click the “Multiple Voltages and Temps” button Use the “+” to add conditions Enter the desired conditions
  26. 26. © 2016 KEMET Corporation Y-Value Tracking and Crosshair locking •Use dropdown box to select which Y-Value the crosshairs will track. •The crosshair will retain their locked position even when changing plots. © 2016 KEMET Corporation
  27. 27. © 2016 KEMET Corporation Thank You! Visit: http://ksim.kemet.com/

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