ABSTRACT
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 6.4 Simulation Results and Discussions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
6.4.1 Buck Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 6.4.1.1 Steady-State Performance . . . . . . . . . . . . . . . . . . . . 119
6.4.2 Boost Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 6.4.2.1 Steady-State Performance . . . . . . . . . . . . . . . . . . . . 122
6.4.3 Buck-Boost Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 6.4.3.1 Steady-State Performance . . . . . . . . . . . . . . . . . . . . 122
In the previous chapters, we have discussed the use of a hysteresis band in the switching relay to suppress the switching frequency variation, and the intro-
of Switching Power
control schemes maintain the switching frequency within a tolerance range against the line or load variations. In this and the following two chapters, we describe an effective and practical approach for controlling the switching frequency of the SM controller via fixed-frequency pulse-width modulation (PWM).
