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A kind of boost controller and boost converter

A controller and control signal technology, applied in the field of power supply, can solve problems such as complicated and cumbersome work, and achieve the effects of reducing power consumption, reducing discharge capacity requirements, and reducing starting current level

Active Publication Date: 2016-05-04
SHENZHEN GOODIX TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The above work is complex and cumbersome

Method used

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  • A kind of boost controller and boost converter
  • A kind of boost controller and boost converter
  • A kind of boost controller and boost converter

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Embodiment Construction

[0021] 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 and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Such as image 3 as shown, image 3 It is a Boost controller disclosed in the embodiment of the present invention, including a first pulse signal generation unit, a first comparison unit, a selection unit, a soft start unit, a second pulse signal generation unit, a second comparison unit, a trigger unit and a buffer unit .

[0023] Wherein, the first pulse signal generating unit outputs the switch pulse control signal FswHighLoad under heavy load and the switch pulse control signal FswLightLoad under light load to the selection unit according to its own internal register settings, and outp...

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Abstract

The invention provides a Boost controller and a Boost converter, belonging to the technical field of power supplies. Among them, the Boost controller includes a first pulse signal generation unit, a first comparison unit, a selection unit, a soft start unit, a second pulse signal generation unit, a second comparison unit, a trigger unit and a buffer unit. Dynamically adjust the modulation type of the loop, and automatically switch between the two modulation modes of pulse width modulation and pulse frequency modulation; the Boost converter includes a Boost controller, a first transistor, a rectifier diode, a first capacitor, a voltage dividing sampling circuit, and a complete The output drive circuit for amplitude amplification from low-voltage signal to high-voltage output signal adopts the invention, which can reduce the overall power consumption level of the converter to the greatest extent while meeting the corresponding speed requirement of the loop output.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to a Boost controller and a Boost converter. Background technique [0002] Boost converter, as one of the basic DC / DC converters, can realize the conversion from low-voltage power supply to high-voltage power supply. This converter has the advantages of small size, simple structure, and high conversion efficiency, so it is widely used. The boost converter is composed of a power stage composed of switching devices and a control circuit. The control circuit generally needs to add negative feedback to the boost converter to form a closed-loop system to improve output accuracy and dynamic response performance. Therefore, the selection and design of the control method are very important to the performance of the switching power supply. [0003] The traditional voltage-controlled Boost converter samples the output voltage and uses it as a feedback signal to realize clo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08H02M3/07H02M1/36
CPCH02M3/156H02M1/0032Y02B70/10
Inventor 陈松涛詹昶
Owner SHENZHEN GOODIX TECH CO LTD
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