Nexperia's Interactive application notes provide general guidelines for various power designs and topologies. A simulator is embedded inside the application with a predefined schematic. This simulator provides a direct view of the performance from system level down to individual component level.
Navigating to Interactive application note pages
To access the interactive application note pages, you can navigate from the ‘Application’ tab on the Nexperia main website page. Scroll down to the last section of that page to find the ‘Interactive application notes’ section. By clicking on one of the interactive application notes, you will gain full access to the text of the system description which include embedded simulations.
Figure 1. Navigation to interactive application notes
Using the embedded simulator
Take IAN50001 - Reverse battery protection in automotive applications as an example to show how to use the embedded simulator. To open the embedded simulation, simply hover over the simulation image. Left click the start icon to see the simulation result of the designed circuit.
Figure 2. Launching the embedded simulation
The simulation will now open inside the interactive application note page.
Figure 3. Simulation running inside the interactive application note
Icons and functions
|Zoom to fit|
|Enter full screen mode|
|Exit full screen mode|
|Waveform probe||Left click probe and drag it to the position you would like to test. Current, voltage and power can be tested.|
|Waveform view||Displays waveforms under the schematic.|
|View waveform in new window|
|Pin viewer to schematic|
|Waveform analyser||Allows calculations to be performed, such as power dissipation, duty cycle, overshoot etc.|
Figure 4. SystemVision Icons
|Circuit schematic. Signal source, components connected with black lines.|
Waveform of the chosen point.
Voltage, current, power dissipation and thermal can be tested.Left image shows VF of the diode PNE20030EP.
|Thermal RC network of mounting base to ambient|
Figure 5. SystemVision blocks
There are 2 ways to view the simulation waveforms.
The first one is to view the waveform in the wave box displayed in the schematic. The other way is to check waveform in the wave viewer.
Set wavebox view
Click the probe and drag it into position. If the probe is at a wire or component terminal the default is to display voltage. If the probe stays at a component the required waveform(s) can be selected. Note I(p1) means the current flow into port 1 of the device. I is default.
Figure 6. Probing the diode cathode voltage
Figure 7. Current probing at R2
Zoom in and Zoom out of waveform area
Left click and drag to the focus area you want to zoom in then release. The area in blue will be zoomed in. Right click then click View All, waveform will be zoomed out.
|Figure 8. Area highlighted in blue to be zoomed in||Figure 9. Zoomed in view of area highlighted in blue|
Right click on waveform, a menu will be displayed as shown below:
Figure 10. Waveform menu
Multi trace and Overlaid waveform views can be displayed in the wave box:
Multi trace view
Overlaid trace view
Figure 11. Display mode
Waveform colors can be customized.
Click add cursor, the cursor will be added into waveform and relevant electrical reading will be displayed.
Click download waveforms, the waveform data will be downloaded as a CSV (comma-seperated values) file, which can be opened in Excel.
Press Plot in viewer, the waveform will be displayed in wave viewer.
Figure 12. Waveform viewer
Click to open the waveform in a new window.
Math operations are quite limited in wave box, only addition, subtraction, multiplication, and division can be used. It can be more useful when plotting waveforms in the viewer and using the waveform analyser.
Figure 13. Function summary for embedded simulation
SystemVision Nexperia Library
Once in the System Vision Cloud environment you may want to edit one of the many Nexperia designs to fit your own application specifications - or to create your own design using Nexperia parts. In either case, in order to find the relevant parts that you may require for your design, you will want to click on the partner button within the SVC library. You may see this in Fig. 14. There you will see Nexperia as one of the partners and by clicking on that other categories will appear from which, one can choose the NMOS Automotive MOSFETs seen in Fig. 15.
|Figure 14. Navigating SystemVision components: Partner / Nexperia / NMOS|
Moreover, a dropdown menu will show when choosing Automotive MOS with the different VDS(max) ratings from 30 V to 100 V and for each voltage rating there are the different packages: LFPAK33, LFPAK56, LFPAK56D, LFPAK56E, LFPAK88 and D2PAK.
|Figure 15. Selecting a Nexperia N-channel MOSFET by VDS rating and package|
Once in the selected voltage menu and package one may select the desired RDSon range. An example may be seen in Fig. 16.
|Figure 16. Nexperia N-channel MOSFET RDSon selection|
Within the RDSon menu one may be able to select the MOSFETs required for their design. Some examples of MOSFETs in the LFPAK56 and LFPAK88 packages may be seen in Fig. 16, in each menu a selection of MOSFETs is shown with the RDSon below 10 mΩ.
As an example, from LFPAK56 and LFPAK88 MOSFET selections seen in Fig. 16 a MOSFET was chosen from each category and placed onto the design sheet. These can be seen in Fig. 17 below as the BUK7Y1R7-40H and BUK7S1R0-40H.
|Figure 17. Selected Nexperia N-channel MOSFET placed in design sheet|
Another method for finding the required Nexperia parts is by using the search in the SystemVision Cloud Library panel as shown in Fig. 18.
Figure 18. Fast library searching
For fast library searches one should use the Nexperia naming rule for the specific components. An example is given below for the Nexperia Automotive MOSFETs.
Enter SystemVision for further simulation functions
Click on Edit in systemvision.com (as shown in figure 3) to change the setting of the circuits. The main circuit will be shown in the centre. The circuit designers will be listed on the right of page.
Have fun with building and customizing SystemVision simulations yourself!
|Page last updated 30 March 2021.|