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Low-dropout regulators (LDOs) are widely distributed in SoC designs to supply individual voltage domains, and a digital LDO (DLDO) is favorable for its low-voltage operation and process scalability. However, as many SoCs generate a load current (ILOAD) variation at sub-A/ns level, voltage regulators require a large area-consuming output capacitor (COUT) to maintain the output voltage (VOUT) during...
A digital low dropout regulator (D-LDO) manages to operate at low voltage and scale with process. But, the tradeoff between current efficiency and transient response speed limits its applications. In this work, a coarse-fine-tuning technique with burst-mode operation is employed to advance this trade-off. Once the output voltage under/overshoot is detected, the power MOS array changes with x16 unit...
Inspired by The Square of Vatican City, a fully integrated step-down switched-capacitor DC-DC converter ring with 100+ phases is designed with a fast dynamic voltage scaling (DVS) feature for the microprocessor in portable or wearable devices. As shown in Fig. 20.4.1, this symmetrical ring-shaped converter surrounds its load in the square and supplies the on-chip power grid, such that a good quality...
Automatic control field includes a large number of tedious calculation and simulation curve drawing task, very difficult to draw the system time response curve by manual. Therefore, it's necessary to design a set of control system teaching software, according to the software students can master the system basic knowledge visually and deeply, reason from the simulation results accurately and easily,...
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