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Boost controller and Boost converter

A technology of controllers and converters, applied in the field of power supplies, can solve problems such as complicated and cumbersome work, achieve the effects of reducing power consumption, reducing discharge capacity requirements, and taking into account start-up time

Active Publication Date: 2013-12-11
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above work is complex and cumbersome

Method used

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  • Boost controller and Boost converter
  • Boost controller and Boost converter
  • 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 discloses a Boost controller and a Boost converter, and belongs to the technical field of power supplies. The Boost controller comprises a first pulse signal generating unit, a first comparison unit, a selecting unit, a soft start unit, a second pulse signal generating unit, a second comparison unit, a triggering unit and a buffering unit. The Boost controller dynamically adjusts the modulation type of a loop according to the load changing situation, and the Boost controller is automatically switched between a pulse width modulation mode and a pulse frequency modulation mode. The Boost converter comprises the Boost controller, a first transistor, a rectifier diode, a first capacitor, a voltage division sampling circuit and an output driving circuit accomplishing the amplitude amplification from low-voltage signals to high-voltage output signals. According to the Boost controller and the Boost converter, the corresponding speed requirement of loop output is met, and meanwhile the power consumption level of the overall converter is reduced to the largest extent.

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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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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