Tyco TX 75149 - Manuals

6 Using SAT When you start SAT, you will see the window shown in Figure 1. 2 Fig. 1. SAT Introduction and Module Selection page

7 Load Module Data File There are two sheets, " Module Selection " and " Configuration Menu " shown initially at the bottom left-hand section of the Excel spreadsheet. Each session should start at the " Module Selection " sheet. Click on the button This will bring the module ...

8 If you want to choose a different module data file, you can always go back to the Module Selection sheet to change it. The Configuration Menu lists five choices for representing the load circuit topology. The first configuration is a simple one where the output voltage is senseddirectly at the out...

9 C lick to C alculate Stability model of the capacitor bank. The load is modeled by the resistance R L . The second configuration is similar to the first one except that the voltage senselocation is moved from the output pins of the module to the load. In this case,the voltage sensed and regulated ...

10 SAT draws the Bode plot of the voltage loop gain on the right half of the page as shown in Figure 5. The phase margin, which is a measure of stability, and the gaincrossover frequency, which is a measure of fast transient response, are alsocalculated and presented below the Bode plot. You can ent...

11 R load = 0.5 ohm R s1 = 1 R s2 = 5 mohm L s1 = 4 L s2 = 100 nH R a1 = 100 R a2 = 100 R a3 = 10 R b1 = 10 R b2 = 10 mohm L a1 = 1 L a2 = 1 L a3 = 1 L b1 = 10 L b2 = 10 nH C a1 = 10 C a2 = 10 C a3 = 1000 C b1 = 1000 C b2 = 1000 µ F 696.6 Hz 52.06 degrees Stability Analysis Tool Notepad Area for JFW...

12 To analyze a different module, you should select the Module Selection tab at the bottom of the Excel Worksheet to go back to the first page and load the datafile for the new module. Note that the new data file will overwrite the old onebelonging to the JFW050A. If you want to keep your analysis r...

13 customer application. SAT can be used to assess the common-mode stability characteristics of a paralleled converter system by analyzing an equivalent single-module system. Thesingle-module equivalent is obtained by scaling the load by the number ofparalleled modules. For example, in a two module ...

14 Limitations of SAT Although SAT is a powerful tool, please keep in mind the following : 1. The loop gain Bode plot and phase margin predicted by SAT are valid when the module is operating in continuous conduction mode (CCM). Therefore, makesure that R L is sufficiently low enough to guarantee a l...

15 Troubleshooting If you encounter the following message when running SAT, there are two possibilities for the error message. 1. Some of the parameters you entered for your network are nonnumeric. 2. You have not enabled the Analysis Toolpack and Analysis Toolpack – VBA in your Excel environment as...