Example of Simulation Using Nippon Chemi-Con SPICE models

Size: px

Start display at page:

Download "Example of Simulation Using Nippon Chemi-Con SPICE models"

Lesley Sherman
6 years ago
Views:

1 Example of Using Nippon Chemi-Con SPICE models This handbook notes simulation examples for Nippon Chemi-Con SPICE models in "OrCAD Capture/PSpice. This handbook is made based on OrCAD Capture 6. (Japanese). Precautions for Use The SPICE models provided are assumed to be used in OrCAD Capture/PSpice or OrCAD Family Release 9. Lite Edition. Please note that performances of SPICE models are not verified in other circuit simulators. The SPICE models and equivalent circuit models (hereinafter the "data") are not a guarantee of the product features. To ensure safe and proper usage of each product, please examine the product by mounting and testing it at your own risk. The data is subject to add, change, and remove without notice. Nippon Chemi-Con Corporation is not responsible for any losses of any kind from use of this data. The copyright of all the data belongs to Nippon Chemi-Con Corporation. Please refrain from redistributing or copying the data. PSpice" and OrCAD Capture" are registered trademarks of Cadence Design Systems in the U.S.

2 Capacitor SPICE model Required for Circuit * SPICE model that reflects the actual parts is necessary to simulate with electric circuit simulator. *SPICE model describes behavior of electronic parts necessary for circuit simulation, and is a part for circuit simulation, so to speak. *Usually, SPICE simulator is equipped with ideal electronic part models with ideal electrical behavior, not actual behavior. Therefore, simulation result obtained is ideal result, and differs greatly from actual measurement result. Moreover, when SPICE model to be used is not reflecting the actual behavior, accurate simulation result cannot be obtained even if carrying out precise simulation. *Nippon Chemi-Con provides SPICE models which are composed of 7-elements parameter reflecting the behaviors of actual capacitors. *By using these SPICE models, simulation result can be brought close to actual measurement result, and exact analysis can be attained. It becomes easier to find problems of the circuit as simulation results are close to measurement result, and yield at the mass production stage, quality and circuit design efficiency can be improved too. C APXAARAMD55G Library File Device Symbol File

3 All of our Capacitor SPICE models are Composed of 7-elements Parameter *Capacitor s electric behavior (especially, capacitance and ESR) can be reproduced accurately by expanding parameter of element that composes capacitor. *To improve customer s circuit simulation accuracy as much as possible, all of our capacitor SPICE models are composed of 7-elements parameter (C C C3 R R R3 L). 3-Elements model (C R L) 5-Elements model (C C R R L) 7-Elements model (C C C3 R R R3 L) L L L R R R R R R3 C C C C C C3 ESR ESR ESR Capacitance Capacitance Capacitance

4 Example of Response of Capacitor /3 Condition *Input Voltage: Vac *Input Impedance: 5Ω *Output Impedance: 5Ω Vin Vac Vdc Zin 5 C APXSARA5MH7G Zout 5 VDB VP Gain Probe α[ db] Phase Probe β[ deg. ] *This simulation is for measuring frequency response of capacitor with using vector network analyzer. *The frequency response of Impedance, Capacitance and ESR, ESL of capacitor can be simulated by measuring attenuation [db] and phase [deg.], which are transmission characteristics (S), through a circuit like the above figure. Attenuation (gain) Waveform 9 Phase Waveform - 6 Attenuation [db] Phase [deg.] k k k M M M -9 k k k M M M

Spice model Equivalent Circuit model Zin 5 VDB Vin Vac Vdc Zin 5 C APXSARA5MH7G Zout 5 VDB VP R Vin Vac Vdc L 3.

5 Example of Response of Capacitor /3 *Nippon Chemi-Con provides SPICE models and equivalent circuit models. *Both device models show the same simulation result. Spice model Equivalent Circuit model Zin 5 VDB Vin Vac Vdc Zin 5 C APXSARA5MH7G Zout 5 VDB VP R Vin Vac Vdc L 3.4nH R.7m 57m Zout 5 R3 4m VP C 8u C 34.7u C3 6.68u Attenuation (gain) Waveform 9 Phase Waveform - 6 Attenuation [db] Phase [deg.] k k k M M M -9 k k k M M M

6 Example of Response of Capacitor 3/3 *By using the following equation, Impedance, Capacitance, ESR, and ESL can be calculated from attenuation α [ db] and phase [ deg. ] which are obtained from simulation result. α β π *note ZO 5[ Ω] S θ [ rad. ] 8 β Z [ Ω] Z O S S S cosθ + 5 Capacitance [ uf ] π f Z ESR 6 Impedance [Ohm] m m Capacitance [uf] 4 3 m k k k M M M k k k M M M ESR [ Ω] Z S ( cosθ S ) O S S cosθ + 5 ESL ph [ ] Z ESR π f 4 ESR [Ohm] m m ESL [ph] 3 m k k k M M M k k k M M M

Example of Electric Discharge Response of Capacitor Condition *Discharge Circuit *Input Voltage: Vdc *Discharge Current: A A (R on(fet) 5mΩ) *I slewlate 38A/us

75 I Voltage Probe R k R 5 Current Probe V V 6V Vpulse TD us TR 4ns TF 4ns PW us PER m initial_voltage voltage_pulse delay_time rise_time fall_time width_pulse

7 Example of Electric Discharge Response of Capacitor Condition *Discharge Circuit *Input Voltage: Vdc *Discharge Current: A A (R on(fet) 5mΩ) *I slewlate 38A/us Vin Vdc L 3.3uH APSFR5E8MF8S C TP FET for discharge SW V Rdischarge.75 I Voltage Probe R k R 5 Current Probe V V 6V Vpulse TD us TR 4ns TF 4ns PW us PER m initial_voltage voltage_pulse delay_time rise_time fall_time width_pulse frequency *This simulation is for electric discharge response of capacitor. *How Capacitance and ESR and ESL influence discharge waveform can be evaluated. Discharge Voltage Waveform Discharge Current Waveform V A A V: 5mV/div H: ns/div V: A/div H: ns/div

Example of Ripple Voltage Noise of Switching Power Supply Condition *Buck Converter *Input Voltage: Vdc *Output Voltage: V (Duty4%) *Output Current: A High_FET

5u Vpulse_Lo V V TD TR n TF n PW.5u PER.

8 Example of Ripple Voltage Noise of Switching Power Supply Condition *Buck Converter *Input Voltage: Vdc *Output Voltage: V (Duty4%) *Output Current: A High_FET Current Probe L.u *Switching : 4kHz Low_FET C Vdc Cin 39u Vpulse_Hi V V TD TF n TR n PW.5u PER.5u Vpulse_Lo V V TD TR n TF n PW.5u PER.5u APXFR5ARA56MF8G I C Voltage Probe C3 Rout V *This simulation is for output ripple voltage noise and ripple current of capacitor. *The optimal type and the number of pieces of capacitors to be used can be evaluated from output waveform. Output Ripple Voltage Noise Waveform Ripple Current Waveform of Output Capacitor (C) V: 5mV/div H: us/div V:.A/div H: us/div

Lab #4 Capacitors and Inductors. Capacitor Transient and Steady State Response

Lab #4 Capacitors and Inductors. Capacitor Transient and Steady State Response Capacitor Transient and Steady State Response Like resistors, capacitors are also basic circuit elements. Capacitors come in a seemingly endless variety of shapes and sizes, and they can all be represented