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Original member of the PartQuest Explore development team. Modeling and Applications Specialist

Description

This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDFFor vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdfThe load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.

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AC-DC Power Adapter With Current Boost Regulator

Darrell
Designer10

Darrell

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9 years 7 months

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Big fan of VHDL-AMS

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http://systemvision.com/tags/transformer

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Comments

Submitted by FurqanAziz on 26 Nov 2015 | 03:36 PST

Excellent Model

Submitted by yobenerehinzams on 6 Mar 2016 | 07:12 PST

materials

Submitted by DTMai on 16 Jun 2016 | 21:15 PDT

hello , and thanx a lot .
I just want to ask you about the mechanism of the current transformer .
Vielen dank

Submitted by Darrell on 24 Jun 2016 | 17:44 PDT

What would you like to know about the transformer?

Submitted by DTMai on 26 Jun 2016 | 12:26 PDT

i am not sure , how I can that simulate . current Transformer and particularly Voltage transformer . thank you again . VG

Submitted by Darrell on 26 Jun 2016 | 21:10 PDT

Find transformer-related designs by looking for tags:

You might find it helpful to look at online resources for transformer theory. Try this site:

http://www.allaboutcircuits.com/textbook/alternating-current/chpt-9/mut…

Darrell

Submitted by DTMai on 27 Jun 2016 | 02:56 PDT

thanx a lot .

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Copy of AC-DC Power Adapter With Current Boost Regulator - on Fri, 02/26/2021 - 18:56

svtle221
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Copy of boost converter average model open loop - on Wed, 02/24/2021 - 20:39

Mike Donnelly
Designer19

Mike Donnelly

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Original member of the PartQuest Explore development team. Modeling and Applications Specialist

Description

This example is intended to show relevant modeling and simulation capabilities of SystemVision Cloud, for electrodynamic energy harvesting (EH) systems. It is not necessarily a practical EH design itself, but rather demonstrates the tool's ability to support knowledgeable users who are creating practical designs.

The mechanical and magnetic circuit sections of the model are composed of "physical" models, in that user can directly specify size and physical properties of the components. This includes the mass of the armature, the stiffness of the resonant spring, the cross section area and length of the magnetic core, the residual flux density of the permanent magnet, and the number of winding turns.

The electronics section (rectifier and boost converter) contains a mix of passive analog circuit elements as well as abstract or "math block" models to represent the state-average (non-switching) behavior of the converter. Finally, constant power load model represents the power demand for periodic transmission of data typical of an (I)IoT sensor node.

In the simulation results displayed on the schematic, the upper right waveform viewer shows the amplitude of the external vibration source (e.g. a motor or transformer housing) of 0.07mm peak at 60 Hz, equivalent to a peak acceleration of 1g (light-blue waveform). The armature spring-mass resonance frequency is 60 Hz, so the armature displacement is seen to reach the frame's travel limit of 4mm peak-to-peak (green waveform).

In the upper left, the two waveform viewers are zoomed-in near the 1 second simulation time mark, and they show the air-gap lengths and the corresponding core flux density and winding voltage. Note that the air-gaps are configured in parallel for the flux path, so the effective path reluctance is minimized when either gap approaches zero length.

In the lower right, the relatively low value of the rectified "DC" voltage is observed (red waveform), as well as the regulated boost output voltage that supplies the transmitter load.

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boost converter average model open loop

Darrell
Designer10

Darrell

Member for

9 years 7 months

530

designs

groups

Big fan of VHDL-AMS

Description

This example is intended to show relevant modeling and simulation capabilities of SystemVision Cloud, for electrodynamic energy harvesting (EH) systems. It is not necessarily a practical EH design itself, but rather demonstrates the tool's ability to support knowledgeable users who are creating practical designs.

The mechanical and magnetic circuit sections of the model are composed of "physical" models, in that user can directly specify size and physical properties of the components. This includes the mass of the armature, the stiffness of the resonant spring, the cross section area and length of the magnetic core, the residual flux density of the permanent magnet, and the number of winding turns.

The electronics section (rectifier and boost converter) contains a mix of passive analog circuit elements as well as abstract or "math block" models to represent the state-average (non-switching) behavior of the converter. Finally, constant power load model represents the power demand for periodic transmission of data typical of an (I)IoT sensor node.

In the simulation results displayed on the schematic, the upper right waveform viewer shows the amplitude of the external vibration source (e.g. a motor or transformer housing) of 0.07mm peak at 60 Hz, equivalent to a peak acceleration of 1g (light-blue waveform). The armature spring-mass resonance frequency is 60 Hz, so the armature displacement is seen to reach the frame's travel limit of 4mm peak-to-peak (green waveform).

In the upper left, the two waveform viewers are zoomed-in near the 1 second simulation time mark, and they show the air-gap lengths and the corresponding core flux density and winding voltage. Note that the air-gaps are configured in parallel for the flux path, so the effective path reluctance is minimized when either gap approaches zero length.

In the lower right, the relatively low value of the rectified "DC" voltage is observed (red waveform), as well as the regulated boost output voltage that supplies the transmitter load.

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You must be a registered user to add a comment.

Boost converter average model

Darrell
Designer10

Darrell

Member for

9 years 7 months

530

designs

groups

Big fan of VHDL-AMS

Description

This example is intended to show relevant modeling and simulation capabilities of SystemVision Cloud, for electrodynamic energy harvesting (EH) systems. It is not necessarily a practical EH design itself, but rather demonstrates the tool's ability to support knowledgeable users who are creating practical designs.

The mechanical and magnetic circuit sections of the model are composed of "physical" models, in that user can directly specify size and physical properties of the components. This includes the mass of the armature, the stiffness of the resonant spring, the cross section area and length of the magnetic core, the residual flux density of the permanent magnet, and the number of winding turns.

The electronics section (rectifier and boost converter) contains a mix of passive analog circuit elements as well as abstract or "math block" models to represent the state-average (non-switching) behavior of the converter. Finally, constant power load model represents the power demand for periodic transmission of data typical of an (I)IoT sensor node.

In the simulation results displayed on the schematic, the upper right waveform viewer shows the amplitude of the external vibration source (e.g. a motor or transformer housing) of 0.07mm peak at 60 Hz, equivalent to a peak acceleration of 1g (light-blue waveform). The armature spring-mass resonance frequency is 60 Hz, so the armature displacement is seen to reach the frame's travel limit of 4mm peak-to-peak (green waveform).

In the upper left, the two waveform viewers are zoomed-in near the 1 second simulation time mark, and they show the air-gap lengths and the corresponding core flux density and winding voltage. Note that the air-gaps are configured in parallel for the flux path, so the effective path reluctance is minimized when either gap approaches zero length.

In the lower right, the relatively low value of the rectified "DC" voltage is observed (red waveform), as well as the regulated boost output voltage that supplies the transmitter load.

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You must be a registered user to add a comment.

Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Sun, 11/29/2020 - 21:55

denis.chudnov.97
Designer237324

denis.chudnov.97

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Description

This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:

http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF

For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.

Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).

This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:

http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf

The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.

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You must be a registered user to add a comment.

Copy of AC-DC Power Adapter With Current Boost Regulator - on Thu, 11/19/2020 - 13:09

vladimir.jug
Designer236538

vladimir.jug

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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Fri, 10/30/2020 - 19:11

k.elmaallem80
Designer236201

k.elmaallem80

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2 years 7 months

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

Description

This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:

http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF

For vehicles with Start-Stop capability, the engine (ICE) is turned off during idle periods, for the purpose of fuel economy. But low-voltage nuisance drop-out of key electronic functions must be avoided during engine re-start. The NCV8876 is designed specifically for this purpose. It uses current-mode control, with many integrated functions to reduce the complexity of the external boost circuit.

Simulation results show the output to the load during battery drop-out and recovery. Note that in this application, the output voltage (dark blue waveform) is maintained above 6.4V during the drop-out transient, and regulates at 6.8V during sustained low voltage (4V) battery operation (orange waveform).

This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:

http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf

The load current for the XAL4030-332 inductor in this application is 4A during nominal 12V operation. But during boost operation, the current reaches 6.6A peak (light blue waveform). This could saturate a typical inductor if it were sized for the nominal load, resulting in a collapse of the effective inductance. But notice that the actual instantaneous inductance (green waveform) only drops to 2.2uH, for this nominal 3.3uH part. This relatively small percentage drop in inductance can easily be accommodated by the converter design.

What's this?

You must be a registered user to add a comment.

State Average CM Boost Converter - Loop Stability

Mike Donnelly
Designer19

Mike Donnelly

Member for

9 years 6 months

1,372

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