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In order to make the buck converter obtain smaller voltage ripple and higher efficiency at the same time, the pulse skipping width modulation (PSWM) mode in buck converter application is proposed in this paper. This novel controlling mode combines the advantage of pulse skipping modulation (PSM) with improving voltage ripple especially in lighter load and pulse width modulation (PWM) having higher...
An integrated synchronous buck converter with adaptive dead time controlled driver is presented in this paper. The integrated synchronous buck converter works in 2MHz PWM mode and the output voltage can be programmed by digital interface, which is suitable for powering the processor core and internal memory with dynamic voltage scaling (DVS) capability. The controller provides 0 and 100% duty cycles...
This paper introduces a novel current output stage with a Digital assistant circuit, which can obtain high speed performance. The output current stage in this paper is used in a switching driving circuit. The principle of this proposed circuit is different with the conventional structure. The added Digital assistant circuit includes a charge and discharge block, a keep block. Depended on simple digital...
Based on the energy conservation rule, an unideal energy balance (UEB) model of a DC-DC converter in discontinuous conduction mode (DCM) is built and the energy efficiency of the power converter is studied. A high energy efficiency PSM/PWM dual-mode for DC-DC converter is proposed in this paper after compared the energy efficiencies of the converter in pulse skip modulation (PSM) mode and pulse width...
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