This paper introduces a novel low-power digital future, are expected to run at frequencies beyond 10 MHz. In controller for high frequency dc-dc switch-mode power supplies addition, the demonstrated systems do not offer a digital (SNIPS) that is well-suited for integration in power management solution for pulse-frequency modulation (PFM), which at light systems of small handheld devices. The controller operates at loads largely improves SMPS efficiency [3]. programmable constant switching frequencies up to 20 MHz and In this paper we present a new low-power architecture that can change mode of operation to improve the overall SNIPS allows integration of digitally controlled SMPS in the existing efficiency. The key elements of the controller are a high and upcoming handheld devices. The controller, shown in frequency digital pulse-width modulator (DPWM), based on a . . . a segmented ring oscillator, and a signal-race based digital pulseFig. , operates at programmable switchMg frequencies up to frequency modulator (DPFM). The controller is implemented in 20 MHz and can switch between PWM and PFM voltage a standard CMOS 0.18 ,Im process and its operation verified regulationmodes. both through simulations and experiments.
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