0000] ....etc

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1. Interleaved boost converter for PFC application
2. Design Oriented Analysis of Modern Active Droop Controlled Power Supplies
3. Active Inductor Current Balancing for Interleaving Multi-Phase Buck-Boost Converter
4. Closed-Loop Control Methods for Interleaved DCM/CCM Boundary Boost PFC Converters
5. Single-Stage Offline SEPIC Converter with Power Factor Correction to Drive High Brightness LEDs
6. Analysis of an integrated flyback and zeta converter with active clamping technique
7. Design and Analysis of Interleaved Forward Quasi- Reson ....etc

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Increasing the Efficiency of Ideal Solar Cells by Photon Induced Transitions
at Intermediate Levels

Antonio Luque and Antonio Martı´
Instituto de Energı´a Solar, Universidad Politécnica de Madrid, 28040 Madrid, Spain
(Received 7 February 1997)


Recent attempts have been made to increase the efficiency of solar cells by introducing an impurity
level in the semiconductor band gap. We present an analysis of such a structure under ideal conditions.
We prove that its efficiency can exceed not only the S ....etc

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ABSTRACT
A pipelined analog-to-digital converter (ADC) architecture suitable for high-speed (150 MHz), Nyquist-rate A/D conversion is presented. At the input of the converter, two parallel track-and-hold circuits are used to separately drive the sub-ADC of a 2.8-b first pipeline stage and the input to two time-interleaved residue generation paths. Beyond the first pipeline stage, each residue path includes a cascade of two 1.5-b pipeline stages followed by a 4-b “backend” folding ADC. The full-scale re ....etc

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ABSTRACT

A pipelined analog-to-digital converter (ADC) architecture suitable for high-speed (150 MHz), Nyquist-rate A/D conversion is presented. At the input of the converter, two parallel track-and-hold circuits are used to separately drive the sub-ADC of a 2.8-b first pipeline stage and the input to two time-interleaved residue generation paths. Beyond the first pipeline stage, each residue path includes a cascade of two 1.5-b pipeline stages followed by a 4-b backend folding ADC. The full-scale residue range at the output of the pipeline ....etc

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Abstract
In this paper, a systematic overview of PLL-based closed-loop control methods for interleaved DCM/CCM boundary boost PFC converters is presented. It is shown that the PLL-based closed-loop methods always provide stable operation, unlike the open-loop control methods, where the only method which results in stable operation is the slave synchronization to the turn-on instant of the master with current-mode control. It is also shown that the dynamic response of the PLL-based closed-loop methods with master-slave approach and dem ....etc

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Application Note 42047 Power Factor Correction (PFC) Basics


What is Power Factor?
Power factor (pf) is defined as the ratio of the real power (P)
to apparent power (S), or the cosine (for pure sine wave for
both current and voltage) that represents the phase angle
between the current and voltage waveforms (see Figure 1).
The power factor can vary between 0 and 1, and can be either
inductive (lagging, pointing up) or capacitive (leading, pointing
down). ....etc

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i need fulldetails about this paper ....etc

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1. Design of LCL-T Resonant Converter Including the Effect of Transformer Winding Capacitance
2. Design of High Voltage, High Power and High Frequency Transformer in LCC Resonant Converter
3. Analysis and design of a current-fed zero-voltage-switching and zero-current-switching CL-resonant push-pull dc-dc converter
4. Soft-Switching Capability Analysis of a Dual Active Bridge Dc-Dc Converter
5. Zero-Current-Transition Bridgeless PFC Without Extra Voltage and Current Stress
6. A Novel Soft Switching Fly back Converter with Synchronous Recti ....etc

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ppt for bridgeless ac to dc cuk rectifier for pfc ....etc

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