Masahiro Suzuki’s research while affiliated with Chuo University and other places

This paper proposes a fast, precise transient response and frequency characteristics simulation method for switching converters. This method uses a behavioral simulation tool (MATLAB/Simulink) without using a SPICE-like analog simulator. The nonlinear operation of the circuit is considered, and the nonlinear function is realized by defining the formula based on the circuit operation and by applying feedback. The transient response and frequency characteristics of a current-mode boost DC-DC converter and a charge pump that were designed using a 0.18-um CMOS process were simulated by SPICE and the proposed program on a behavioral simulation tool, which we named NSTVR (New Simulation Tool for Voltage Regulators). Simulation results showed good agreement, yet NSTVR was more than 85 times faster than SPICE in CPU time in calculating frequency characteristics of a current-mode boost DC-DC converter.