DC-DC Buck Converter with Reduced Impact

One of the most constraints in DC-DC converter is the supply bouncing caused by the fast switching of power MOSFET. The purpose of this paper is to present a DC-DC buck converter using slew-rate modulator to increase the slew times of the PWM output instead the conventional output stage in order to minimize the bouncing, It does not constitutes a trivial task. This paper presents preliminary results of supply bouncing simulations made with a Slew-Rate Modulator. These simulation results show a very good agreement with the expected results.