Soft Saturation | PartQuest™ Explore

Application Area

Mike Donnelly
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Mike Donnelly

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9 years 4 months

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

denis.chudnov.97
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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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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Fri, 10/30/2020 - 19:11

k.elmaallem80
Designer236201

k.elmaallem80

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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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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Wed, 09/02/2020 - 16:44

arthurpc.apc
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arthurpc.apc

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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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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Tue, 06/09/2020 - 19:36

bonsubenjamin
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bonsubenjamin

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2 years 9 months

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Dr. Benjamin Bonsu is skilled in building cross-functional teams, demonstrating exceptional communication skills, and making critical decisions during challenges.

Dr. Benjamin Bonsu is an adaptable and transformational leader with an ability to work independently, creating effective presentations, and developing opportunities that further establish organizational goals.

Dr Benjamin Bonsu co-founded the All Nations University Space System Technology Laboratory ([email protected]) to promote space activities in Ghana and successfully managed three historic space related projects which includes the first Ghana satellite (Ghanasat-1) , Amateur ground station, and Cansat project.

Dr Benjamin Bonsu has worked for several international space communities to build satellites such as Horyu-IV satellite project and Birds series constellation satellite project.

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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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Sun, 02/09/2020 - 12:43

radivojevic.djordje
Designer229591

radivojevic.djordje

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3 years 1 month

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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.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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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Mon, 02/03/2020 - 16:04

dwarkesh14
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dwarkesh14

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3 years 1 month

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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.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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Virtual Evaluation Board for NCV8876

Takayuki
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Takayuki

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3 years 5 months

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Virtual Evaluation Board for NCV8876

Asuma
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Asuma

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Virtual Evaluation Board for NCV8876

Mike Donnelly
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Mike Donnelly

Member for

9 years 4 months

1,337

designs

10

groups

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

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Mike Donnelly
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denis.chudnov.97
Designer237324

k.elmaallem80
Designer236201

arthurpc.apc
Designer234520

bonsubenjamin
Designer232352

radivojevic.djordje
Designer229591

dwarkesh14
Designer229429

Takayuki
Designer224194

Asuma
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Mike Donnelly
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