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Patent

Multiple-Output DC-DC Converter

Gyu-Ha Cho, +1 more
TLDR
In this paper, the authors proposed a flexible-order power-distributive control (FOPDC) for a DC/DC converter, which can correctly regulate multiple outputs with fast transient response, low cross regulation, and effective switching frequency for each output.
Abstract
The invention relates to a DC/DC converter design. The converter requires only one single inductor to draw energy from one input source and distribute it to more than one outputs, employing Flexible-Order Power-Distributive Control (FOPDC). It include a single inductor, a number of power switches, comparators, only one error amplifier, a detecting circuit and a control block to regulate outputs. This converter can correctly regulate multiple outputs with fast transient response, low cross regulation, and effective switching frequency for each output. It can work in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM). Moreover, with FOPDC, future output extension is simple, making a shorter time-to-market process for next versions of the converter. The design can be applied to different types of DC-DC converter.

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Citations
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References
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Dual output switching regulator and method of operation

TL;DR: In this article, a system and method of operation of a power switching circuit is provided that includes a charging switch configured to be connected to an inductor at one node and configured to receive control signals to open and close the charging switch.
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TL;DR: In this article, a diode is placed in series with each switch that controls the charging of the output capacitors to prevent any extraneous stray current from escaping while the switch is closed.
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