Low-voltage and high-current control circuit

A control circuit and high current technology, applied in the direction of circuit, control/regulation system, electrical components, etc., can solve the problems of not being able to drive and open ordinary MOS tubes, low voltage of secondary lithium batteries, and low cost, and achieve low cost and high cost. Reliability, low cost effect

Pending Publication Date: 2017-05-31
深圳市超力源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a low-voltage high-current control circuit, which solves the problem that the sing

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  • Low-voltage and high-current control circuit
  • Low-voltage and high-current control circuit
  • Low-voltage and high-current control circuit

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] The invention consists of a DC boost module, a MOS tube control module, a power module and a DC boost control module. The DC boost control module must generate a square wave output with a certain frequency; while the DC power boost module raises the low voltage of the battery to a voltage that can drive ordinary MOS tubes, so that ordinary ...

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Abstract

The invention relates to the technical field of a high-current control circuit and specifically relates to a low-voltage and high-current control circuit. The circuit comprises a direct current boost module, an MOS transistor control module, a power module and a direct current boost control module. The direct current boost control module, the direct current boost module, the MOS transistor control module and the MOS transistor power module are connected in sequence. The direct current boost module is a direct current voltage doubling circuit composed of a diode D1, the diode D2, a capacitor C2, the capacitor C2, a switch tube Q1 and the switch tube Q2. The switch tube Q1 and the switch tube Q2 are switched repeatedly and circularly according to certain frequency, and the stable voltage output can be realized, thereby driving an MOS transistor. A voltage 3.7V of a secondary lithium battery multiplies by 2 to obtain 7.4V, in this way, the 7.4 is greater than a threshold value of a general MOS transistor starting voltage 4V, the problem that the single secondary lithium battery cannot switch on the general MOS transistor due to low voltage is solved, the circuit is simple and reliable, is high in operability and low in cost and has high creativity.

Description

technical field [0001] The invention relates to the technical field of high-current control circuits, in particular to a low-voltage high-current control circuit. Background technique [0002] With the enhancement of people's awareness of environmental protection, the development of lithium battery technology and the enhancement of people's awareness of energy conservation and emission reduction, lithium batteries have been widely used in various industries, especially some portable mobile devices are more and more widely used, and the performance is particularly prominent- --Small size, sufficient energy, environmental protection, light weight, easy to use, etc., unlike lead-acid batteries, which are bulky, pollute the environment, and are inconvenient to use. And the current charging can also use mobile phone chargers, solar charging, etc. These mobile devices now require a power supply voltage generally lower than 5V and a large operating current. Using ordinary MOS tube...

Claims

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Application Information

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IPC IPC(8): H03K17/74H02M3/158
CPCH02M3/158H03K17/74
Inventor 蒋瑛孙宗辉陈启伍
Owner 深圳市超力源科技有限公司
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