Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Tue, 11/28/2023 - 15:28 Designer https://explore.partquest.com/node/622790 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/622790"></iframe> Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p> <p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p> <p>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.</p> <p>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).</p> <p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p> <p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> <p>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.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of AC-DC Power Adapter With Current Boost Regulator - on Tue, 11/07/2023 - 17:28 Designer https://explore.partquest.com/node/619487 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/619487"></iframe> Title Description <p>This 5V regulator circuit provides 5A load current capability, well above the current limit of the linear regular component itself. This is thanks to the load sharing role of the bypass PNP transistor.</p> <p>The circuit is shown with a household 120 V. AC input, with a transformer and rectifier circuit, attempting to approximate a 12V automotive input voltage level. The design is based on an example application circuit shown in Figure 11 of the On Semiconductor Datasheet MC7800/D, November 2014 - Rev. 27. This executable design can be used to assess line and load transients, efficiency, PSRR vs. Frequency, etc. It can also be used for selecting the peripheral circuit components to achieve the desired performance.</p> <p>See also http://www.systemvision.com/design/ac-dc-power-adapter for a lower power level circuit.</p> About text formats Tags 5V Regulator, 5AMC7805Bboost Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of AC-DC Power Adapter With Current Boost Regulator - on Tue, 11/07/2023 - 17:15 Designer https://explore.partquest.com/node/619484 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/619484"></iframe> Title Description <p>This 5V regulator circuit provides 5A load current capability, well above the current limit of the linear regular component itself. This is thanks to the load sharing role of the bypass PNP transistor.</p> <p>The circuit is shown with a household 120 V. AC input, with a transformer and rectifier circuit, attempting to approximate a 12V automotive input voltage level. The design is based on an example application circuit shown in Figure 11 of the On Semiconductor Datasheet MC7800/D, November 2014 - Rev. 27. This executable design can be used to assess line and load transients, efficiency, PSRR vs. Frequency, etc. It can also be used for selecting the peripheral circuit components to achieve the desired performance.</p> <p>See also http://www.systemvision.com/design/ac-dc-power-adapter for a lower power level circuit.</p> About text formats Tags 5V Regulator, 5AMC7805Bboost Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Thu, 10/12/2023 - 14:37 Designer https://explore.partquest.com/node/615779 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/615779"></iframe> Title Description <p>This example shows the performance of an ON Semiconductor NCV8876 Automotive Grade Start-Stop Boost Controller:</p> <p>http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF</p> <p>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.</p> <p>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).</p> <p>This circuit also demonstrates the value of soft-saturation inductor components from Coilcraft:</p> <p>http://www.coilcraft.com/pdfs/Doc1140_Beyond_the_data_sheet_Part1.pdf</p> <p>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.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876 Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of AC-DC Power Adapter With Current Boost Regulator - on Tue, 08/22/2023 - 21:14 Designer https://explore.partquest.com/node/606422 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/606422"></iframe> Title Description <p>This 5V regulator circuit provides 5A load current capability, well above the current limit of the linear regular component itself. This is thanks to the load sharing role of the bypass PNP transistor.</p> <p>The circuit is shown with a household 120 V. AC input, with a transformer and rectifier circuit, attempting to approximate a 12V automotive input voltage level. The design is based on an example application circuit shown in Figure 11 of the On Semiconductor Datasheet MC7800/D, November 2014 - Rev. 27. This executable design can be used to assess line and load transients, efficiency, PSRR vs. Frequency, etc. It can also be used for selecting the peripheral circuit components to achieve the desired performance.</p> <p>See also http://www.systemvision.com/design/ac-dc-power-adapter for a lower power level circuit.</p> About text formats Tags 5V Regulator, 5AMC7805Bboost Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of AC-DC Power Adapter With Current Boost Regulator - on Fri, 02/26/2021 - 18:56 Designer https://explore.partquest.com/node/413887 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/413887"></iframe> Title Description <p>This 5V regulator circuit provides 5A load current capability, well above the current limit of the linear regular component itself. This is thanks to the load sharing role of the bypass PNP transistor.</p> <p>The circuit is shown with a household 120 V. AC input, with a transformer and rectifier circuit, attempting to approximate a 12V automotive input voltage level. The design is based on an example application circuit shown in Figure 11 of the On Semiconductor Datasheet MC7800/D, November 2014 - Rev. 27. This executable design can be used to assess line and load transients, efficiency, PSRR vs. Frequency, etc. It can also be used for selecting the peripheral circuit components to achieve the desired performance.</p> <p>See also http://www.systemvision.com/design/ac-dc-power-adapter for a lower power level circuit.</p> About text formats Tags 5V Regulator, 5AMC7805Bboost Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of AC-DC Power Adapter With Current Boost Regulator - on Fri, 02/26/2021 - 18:56 Designer https://explore.partquest.com/node/413887 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/413887"></iframe> Title Description <p>This 5V regulator circuit provides 5A load current capability, well above the current limit of the linear regular component itself. This is thanks to the load sharing role of the bypass PNP transistor.</p> <p>The circuit is shown with a household 120 V. AC input, with a transformer and rectifier circuit, attempting to approximate a 12V automotive input voltage level. The design is based on an example application circuit shown in Figure 11 of the On Semiconductor Datasheet MC7800/D, November 2014 - Rev. 27. This executable design can be used to assess line and load transients, efficiency, PSRR vs. Frequency, etc. It can also be used for selecting the peripheral circuit components to achieve the desired performance.</p> <p>See also http://www.systemvision.com/design/ac-dc-power-adapter for a lower power level circuit.</p> About text formats Tags 5V Regulator, 5AMC7805Bboost Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of boost converter average model open loop - on Wed, 02/24/2021 - 20:39 Designer https://explore.partquest.com/node/412637 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/412637"></iframe> Title Description <p>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.</p> <p>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.</p> <p>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.</p> <p>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).</p> <p>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.</p> <p>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.</p> About text formats Tags Energy HarvestElectrodynamicMechanical Resonanceboostfull wave rectifierState-Averagemagnetic circuitvibration energyIoTIIoT Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
boost converter average model open loop Designer https://explore.partquest.com/node/412577 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/412577"></iframe> Title Description <p>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.</p> <p>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.</p> <p>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.</p> <p>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).</p> <p>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.</p> <p>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.</p> About text formats Tags Energy HarvestElectrodynamicMechanical Resonanceboostfull wave rectifierState-Averagemagnetic circuitvibration energyIoTIIoT Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Boost converter average model Designer https://explore.partquest.com/node/412568 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/412568"></iframe> Title Description <p>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.</p> <p>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.</p> <p>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.</p> <p>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).</p> <p>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.</p> <p>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.</p> About text formats Tags Energy HarvestElectrodynamicMechanical Resonanceboostfull wave rectifierState-Averagemagnetic circuitvibration energyIoTIIoT Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
