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Advanced constant off-time control for four-switch buckboost converter

A converter, boost technology, applied in output power conversion devices, control/regulation systems, high-efficiency power electronic conversion, etc., can solve problems such as low efficiency and high cost, and achieve improved performance and transient response. Effect

Active Publication Date: 2019-10-11
M3 TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, traditional buck-boost converters are less efficient
In addition, traditional buck-boost converters have high cost due to the need for high current rating devices

Method used

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  • Advanced constant off-time control for four-switch buckboost converter
  • Advanced constant off-time control for four-switch buckboost converter
  • Advanced constant off-time control for four-switch buckboost converter

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Embodiment Construction

[0045] The making and using of the presently preferred embodiments are discussed below. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

[0046] The invention can be embodied in many different forms. Representative embodiments are shown in the drawings and described in detail herein. These embodiments are examples or illustrations of the principles of the invention, and are not intended to limit its broad aspects. In this sense, elements and limitations disclosed in, for example, the Abstract, Summary, and Detailed Description sections but not expressly set forth in the claims should not be incorporated individually or collectively, by implication, inference, or otherwise. into the claims. For the purposes ...

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Abstract

A buck-boost converter comprises a first high-side switch and a first low-side switch connected in series between an input voltage terminal and ground, a second high-side switch and a second low-sideswitch connected in series between an output voltage terminal and ground, an inductor connected to a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch and a control apparatus configured to generate gate drive signals, wherein the control apparatus comprises a first timer for setting a turn-off time of the first low-side switch, a second timer for setting a turn-off time of the second high-side switch and a peak current mode control device for setting a turn-off time of the first high-side switch and a turn-off time of the second low-side switch.

Description

technical field [0001] The present invention relates to power converters. Background technique [0002] As electronic devices become portable and mobile, batteries have become the main source of power. However, due to the characteristics of the battery, the output voltage of the battery pack may vary over a wide range between a fully charged state and a fully drained state. Depending on the state of the battery, the charging voltage may be higher or lower than the battery voltage. [0003] Also, as USB Type-C (USB-C) begins to penetrate the mainstream market, the voltage from the UBS port is no longer fixed at 5V, but may vary over a wide range between 3.5V and 20V. At the same time, downstream devices connected to this type of USB port may still require a voltage generally on the order of 5V or close to the midway value of 3.5V to 20V. [0004] In all these situations, the input voltage and output voltage of the power converter of the electronic device may cross during n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/32
CPCH02M3/1582H02M1/32Y02B70/10H02M1/0009H02M3/156H02M3/158H02M1/088H02M1/0048
Inventor 杨勃席小玉孟庆达
Owner M3 TECHNOLOGY
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