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This paper presents an integrated DC-DC buck converter with variable output voltage (from 1.2 V up to 5 V) and capability for delivering a wide range of output currents. The converter is optimized for achieving high efficiency, which is in range from 88% to 94.4% for output voltages from 1.2 V to 3.1V and output currents from 0.4 A to 1.2 A. Also, an overview of the converter losses is given, especially...
A Buck converter, created with a monolithic implementation of series connected MOSFETs at high-voltage, is presented. Using a single low-voltage control signal to trigger the bottom MOSFET in the series stack, a voltage division across parasitic and inserted capacitances in the circuit is used to turn on the entire stack of devices. The governing equations for the Stacked MOSFET are presented, and...
Here the design of an integrated buck-converter leg is presented in which the free-wheeling diode is replaced by a comparator controlled N-MOSFET. This allows eliminating the efficiency reducing voltage drop at the diode while the discontinuous conducting mode (DCM) is still applicable. For this issue, besides the control block also a fast comparator with a special offset reduction circuit is presented...
In this paper, high-voltage (HV)-tolerant level shifters with combinational functionality are proposed based on differential cascode voltage switch logic (DCVSL). These level shifters are tolerant to supply voltages higher than the process limit for individual CMOS transistors. The proposed HV DCVSL level shifters are particularly useful when it is mandatory to constrain the output using a logic function...
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