References

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. The single-module equivalent is obtained by scaling the load by the number of paralleled modules. For example, in a two module parallel system, the load is scaled by a factor of two by doubling the load resistance, ESR’s and ESLs, and reducing the capacitances by half. The results from SAT are then valid for the paralleled converter system as well

This method assumes that the layout is symmetrical in the sense that all parasitic impedances between the modules and the load are substantially equal and the sense locations of all modules are the same. If there is any discrepancy, then the single equivalent module approach will yield a different answer than the actual paralleled system.

[1]V. Joseph Thottuvelil, George C. Verghese, “Analysis and Control Design of Paralleled DC/DC Converters with Current Sharing”, IEEE Trans. On Power Electronics, July 1998, pp. 635-644.

[2]Cahit Gezgin, Wayne C. Bowman, V. Joseph Thottuvelil, “A Stability Analysis Tool for DC-DC Converters”, IEEE Applied Power Electronics Conference 2002, vol.1, pp. 367-373.