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Copy of NCV8876 - Automotive Start-Stop Boost Controller - on Wed, 09/02/2020 - 16:44 Designer https://explore.partquest.com/node/338425 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/338425"></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 NCV8876 - Automotive Start-Stop Boost Controller - on Tue, 06/09/2020 - 19:36 Designer https://explore.partquest.com/node/322031 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/322031"></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 NCV8876 - Automotive Start-Stop Boost Controller - on Sun, 02/09/2020 - 12:43 Designer https://explore.partquest.com/node/281305 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/281305"></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 NCV8876 - Automotive Start-Stop Boost Controller - on Mon, 02/03/2020 - 16:04 Designer https://explore.partquest.com/node/280394 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/280394"></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 -
Virtual Evaluation Board for NCV8876 Designer https://explore.partquest.com/node/240729 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/240729"></iframe> Title Description <p>This design is a “Live, Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can modify various parameter values (as indicated in blue) and then run new simulations to see the effects of those changes, This "Live, virtual" testing of the NCV8876 and help the user gain a better understanding of its features and behavior.</p><p>The nominal simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.0V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (3.0V, blue waveform).</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
NCV887601BSTGEVB - Evaluation Board Test Designer https://explore.partquest.com/node/96141 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/96141"></iframe> Title Description <p>This design is a “Virtual Evaluation Board”. It represents the physical evaluation board for the NCV8876 Automotive Start-Stop Boost Controller IC, which is available from ON Semiconductor here:</p><p>http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCV887601BSTGEVB,</p><p>The schematic includes all of the components on the evaluation board, as well as user specified external test apparatus. The user can perform virtual testing on the NCV8876 component, to gain a better understanding of its features and behavior. Please see the related blog article, which describes this component's application and benefits:</p><p>https://www.systemvision.com/blog/automotive-start-stop-%E2%80%A6-keep-lights-june-13-2016</p><p>Simulation results show the output to the load during a fast battery drop-out and recovery. Note that in this particular test set-up, the output voltage (red waveform) is maintained above 6.3V during the drop-out transient, and regulates at 6.8V during sustained low voltage operation (2.6V, blue waveform).</p><p>Also shown are the current in the N-channel Power MOSFET (brown waveform), and the current in the Vishay-Dale soft-saturation inductor (purple waveform). For this boost application, the soft-saturation behavior helps prevent inductance collapse during brief over-current conditions. The datasheet for the IHLP5050FDER2R2M01 can be found here: </p><p>http://www.vishay.com/docs/34123/ihlp5050fd01.pdf</p><p>Note that the user can move the waveform probes around to see the voltage waveform on any other nets (i.e. “wires”), or the current, power and other signals inside any component. The user can also make a copy of this design and freely change any of the component values, then rerun the simulation and see the effect of those changes.</p> About text formats Tags Start-StopboostSoft SaturationNCV8876Evaluation BoardNCV887601BSTGEVB Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
2 MOSFET circuit for alternate bypass Designer https://explore.partquest.com/node/92806 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/92806"></iframe> Title Description <p>Design goal: To develop an alternate bypass strategy</p> About text formats Tags Start-StopboostSoft SaturationNCV8876EMC Component Reuse Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
NCV8876 - Circuit for alternate bypass development Designer https://explore.partquest.com/node/92636 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/92636"></iframe> Title Description <p>Design goal: To develop an alternate bypass strategy</p> About text formats Tags Start-StopboostSoft SaturationNCV8876EMC Component Reuse Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
NCV8876 - Circuit Showing EMC Component Reuse Designer https://explore.partquest.com/node/90501 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/90501"></iframe> Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It shows the reuse of a typical module's EMC components (i.e. the "pi" filter), which can serve a dual purpose as part of the boost converter. This includes the 4.7uF and 10uF capacitors, and the 1uH soft-saturation inductor.</p><p>The NCV8876 is designed specifically for this application, requiring a minimum of new external components. These include the NMOS switch, the Schottky rectifier diode and the 0.011 Ohm current sense resistor. It also includes a few peripheral passives, such as the simple current-mode compensation network and the frequency programming resistor r9. The switching frequency can be adjusted to accommodate the available EMC component values.</p><p>Simulation results show the output to the 5W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 6.0V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform).</p><p>An alternate implementation reference design, with higher efficiency for higher power loads, is provided in the companion design: https://www.systemvision.com/design/ncv8876-power-saving-diode-bypass-circuit</p> About text formats Tags Start-StopboostSoft SaturationNCV8876EMC Component Reuse Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
NCV8876 - With Power-Saving Diode Bypass Circuit Designer https://explore.partquest.com/node/88626 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/88626"></iframe> Title Description <p>This is a reference design for the ON Semiconductor NCV8876 Start-Stop Boost Controller (http://www.onsemi.com/pub_link/Collateral/NCV8876-D.PDF). It is a more complex but higher efficiency implementation than the companion design: https://www.systemvision.com/design/ncv8876-circuit-showing-emc-component-reuse. This version is intended for use with higher power loads.</p><p>This circuit includes a PMOS bypass switch, such that the rectifier diode voltage drop is not present under normal battery voltage conditions. All of the load current flows through the bypass PMOS during normal operation. When the battery voltage falls below the "wake-up" level, the NCV8876 status pin transition provides an early indication that the boost switching is about to begin. This signal is inverted and level-shifted by the BJT circuit. This deactivates the bypass PMOS, forcing the boosted load current through the rectifier diode. When the battery voltage recovers and the output voltage rises, the status re-activates the PMOS bypass and normal operation resumes.</p><p>Simulation results show the output to the 20W load during battery drop-out and recovery. Note that in this application, the output voltage (red waveform) is maintained above 5.5V during the drop-out transient, and regulates at 6.8V as the input voltage at the PCB drops to a minimum value of 3V (light blue waveform). The bypass transition can also be observed, with the PMOS gate voltage (purple waveform) and the Ids current (dark green waveform) shown in the lower waveform viewer. Note that no bypass current flows during boost switching. The current transfer to the diode can be observed by moving one of the waveform probes to the diode and choosing to plot "id".</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 -
