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This paper presents the design of a zero-voltage-ripple (ZVR) buck dc-dc converter. The circuit uses an autotransformer for ripple cancellation in the output voltage. The principle of operation is discussed in brief. The relationship between the currents through the magnetizing inductance and the auto-transformer windings is developed. The auxiliary inductance for ripple cancellation in series with...
This paper presents a method for calculating the semiconductor losses in asynchronous and synchronous PWM buck converters when operated as a fixed-VI, fixed-RL, variable-Vo dynamic power supply. Equations are derived for MOSFET switching and conduction losses in both circuits, as well as diode conduction and forward-voltage losses. This work also compares the two topologies from the perspective of...
Modern energy transmission and signal reproduction techniques rely upon power amplifiers that must operate with high efficiency. An increasingly popular technique for addressing this problem involves replacing the fixed power amplifier supply voltage VDD with a controlled, variable voltage provided by a dynamic power supply. Although pulse‐width modulated dc‐dc buck converters typically function as...
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