Loop Stability | PartQuest™ Explore

This design uses both TDFS and standard AC Analysis methods to assess the stability of a closed-loop system. The design is the "Buck DC to DC Converter", using a state-average model for the modulator function.

The use of state-average models supports AC Analysis, but TDFS (Time Domain Frequency Sweep) is also used to show the equivalency of the methods. Note that the TDFS approach can be used for systems that do not support AC Analysis, such as switching circuits or systems that contain sampling or digital control aspects. This particular example is directly comparable to the design "TDFS Loop Stability for Buck DC to DC Converter - Switching". In that design, the TDFS method is used to measure the open loop transfer function of an operational switching circuit.

Note that the approach used to characterize the loop stability, by injecting a small sinusoidal stimulus signal in series with the loop and then measuring the complex ratio of the ground referenced return signal to the injected signal, is described in:

D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries

About text formats

TDFS Sweep example

david.g.bedrosian+rohm_test_designs_production
Designer234163

david.g.bedrosian+rohm_test_designs_production

Member for

3 years 8 months

101

designs

3

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Description

This design uses both TDFS and standard AC Analysis methods to assess the stability of a closed-loop system. The design is the "Buck DC to DC Converter", using a state-average model for the modulator function.

The use of state-average models supports AC Analysis, but TDFS (Time Domain Frequency Sweep) is also used to show the equivalency of the methods. Note that the TDFS approach can be used for systems that do not support AC Analysis, such as switching circuits or systems that contain sampling or digital control aspects. This particular example is directly comparable to the design "TDFS Loop Stability for Buck DC to DC Converter - Switching". In that design, the TDFS method is used to measure the open loop transfer function of an operational switching circuit.

Note that the approach used to characterize the loop stability, by injecting a small sinusoidal stimulus signal in series with the loop and then measuring the complex ratio of the ground referenced return signal to the injected signal, is described in:

D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries

About text formats

TDFS Open-Loop Frequency Response for PMSM/SVM Motion Control System

peter.auer
Designer169266

peter.auer

Member for

6 years 4 months

8

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Description

About text formats

TDFS Open-Loop Frequency Response for PMSM/SVM Motion Control System

FranciscoTelokken
Designer57781

FranciscoTelokken

Member for

7 years 10 months

28

designs

1

groups

Student and profissional of electronics engineering. Working in power electronics projects and integrated them from iot enviroment.

Description

About text formats

TDFS Open-Loop Frequency Response for PMSM/SVM Motion Control System

Mike Donnelly
Designer19

Mike Donnelly

Member for

10 years 5 months

1,546

designs

10

groups

Member of the PartQuest Explore Development Team. Focused on modeling and simulation of analog, mixed-signal and multi-discipline systems covering a broad range of applications, including power electronics, controls and mechatronic systems.

Description

About text formats

TDFS Loop Stability for Buck DC to DC Converter - State Average

DGB
Designer12

DGB

Member for

10 years 5 months

116

designs

10

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Description

This design uses both TDFS and standard AC Analysis methods to assess the stability of a closed-loop system. The design is the "Buck DC to DC Converter", using a state-average model for the modulator function. The use of state-average models supports AC Analysis, but TDFS (Time Domain Frequency Sweep) is also used to show the equivalency of the methods. Note that the TDFS approach can be used for systems that do not support AC Analysis, such as switching circuits or systems that contain sampling or digital control aspects. This particular example is directly comparable to the design "TDFS Loop Stability for Buck DC to DC Converter - Switching". In that design, the TDFS method is used to measure the open loop transfer function of an operational switching circuit.Note that the approach used to characterize the loop stability, by injecting a small sinusoidal stimulus signal in series with the loop and then measuring the complex ratio of the ground referenced return signal to the injected signal, is described in:D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries

About text formats

Automotive Buck Converter with NCV8851 - AC Analysis

Mike Donnelly
Designer19

Mike Donnelly

Member for

10 years 5 months

1,546

designs

10

groups

Member of the PartQuest Explore Development Team. Focused on modeling and simulation of analog, mixed-signal and multi-discipline systems covering a broad range of applications, including power electronics, controls and mechatronic systems.

TDFS Loop Stability for Buck DC to DC Converter - State Average

Mike Donnelly
Designer19

Mike Donnelly

Member for

10 years 5 months

1,546

designs

10

groups

Member of the PartQuest Explore Development Team. Focused on modeling and simulation of analog, mixed-signal and multi-discipline systems covering a broad range of applications, including power electronics, controls and mechatronic systems.

Description

This design uses both TDFS and standard AC Analysis methods to assess the stability of a closed-loop system. The design is the "Buck DC to DC Converter", using a state-average model for the modulator function. The use of state-average models supports AC Analysis, but TDFS (Time Domain Frequency Sweep) is also used to show the equivalency of the methods. Note that the TDFS approach can be used for systems that do not support AC Analysis, such as switching circuits or systems that contain sampling or digital control aspects. This particular example is directly comparable to the design "TDFS Loop Stability for Buck DC to DC Converter - Switching". In that design, the TDFS method is used to measure the open loop transfer function of an operational switching circuit.Note that the approach used to characterize the loop stability, by injecting a small sinusoidal stimulus signal in series with the loop and then measuring the complex ratio of the ground referenced return signal to the injected signal, is described in:D. Venable, “Testing Power Sources for Stability”, Venable technical paper #1, Venable Industries

About text formats

Terms of Use Cookie Notice Data Privacy Notice

sergeybekrenyovDesigner236944

Member for

michal.p.baranowskiDesigner234398

Member for

david.g.bedrosian+rohm_test_designs_productionDesigner234163

Member for

david.g.bedrosian+rohm_test_designs_productionDesigner234163

Member for

peter.auerDesigner169266

Member for

FranciscoTelokkenDesigner57781

Member for

Mike DonnellyDesigner19

Member for

DGBDesigner12

Member for

Mike DonnellyDesigner19

Member for

Mike DonnellyDesigner19

Member for

sergeybekrenyov
Designer236944

michal.p.baranowski
Designer234398

david.g.bedrosian+rohm_test_designs_production
Designer234163

david.g.bedrosian+rohm_test_designs_production
Designer234163

peter.auer
Designer169266

FranciscoTelokken
Designer57781

Mike Donnelly
Designer19

DGB
Designer12

Mike Donnelly
Designer19

Mike Donnelly
Designer19