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A control method, device and converter for a single-inductance multi-output converter

A single-inductor multi-output, control device technology, applied in output power conversion devices, adjustment of electrical variables, control/regulation systems, etc., can solve problems such as low load capacity and large ripple

Active Publication Date: 2019-09-17
ACTIONS ZHUHAI TECH CO
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  • Application Information

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Problems solved by technology

The circuit structure of PFM control is relatively simple, generally adopts digital control, there is no stability problem, and the response speed is fast, but its load capacity is relatively low, and the ripple is larger than that of PWM

Method used

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  • A control method, device and converter for a single-inductance multi-output converter
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  • A control method, device and converter for a single-inductance multi-output converter

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] A Single Inductor Multiple Output (SIMO) converter utilizes the time-sharing working principle of each output branch, and can independently control multiple energy outputs by using one inductor. Since a plurality of output branches share one inductance, they can work in time-division, reducing the number of inductances required by the circuit, so while realizing independent control of each output branch, the size of the converter sys...

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Abstract

The invention discloses a control method, a device and a converter of a single inductance multi-output converter. The method of the present invention includes performing the following steps in each clock cycle: obtaining the output voltages of the N output branches of the single-inductance multi-output converter; selecting the clock from the N output branches according to the output voltages of the N output branches Q candidate charging branches in the cycle, Q is an integer less than or equal to N; according to the output voltage of the Q candidate charging branches, select an output branch charged in this clock cycle from the Q candidate charging branches ; According to whether the N output branches are charged in the current clock cycle, output the driving signals of the N output branches of the single-inductance multi-output converter in the current clock cycle. The invention provides a control scheme of a single-inductance multi-output converter capable of achieving better control effects.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a control method, device and converter for a single-inductance multi-output converter. Background technique [0002] With the rapid development of portable electronic products, the cost, volume and efficiency requirements of power supply equipment are becoming more and more stringent. In these products, more than one power supply is often required. If a traditional single-output converter is used, multiple drive integration is required. Circuit (Integrated Circuit, IC) and external components such as multiple inductors and capacitors will greatly increase the size and cost of the product. The Single-Inductor Multiple-Output (SIMO) converter uses the principle of time-division multiplexing to control the time-division work of each branch, and only one inductor can obtain multiple stable voltage outputs. wide attention in academia and industry. [0003] Two commonly use...

Claims

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Application Information

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IPC IPC(8): H02M3/158
CPCH02M3/1582H02M1/0003H02M1/0009
Inventor 张亮彭祥
Owner ACTIONS ZHUHAI TECH CO
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