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A mobile charging power supply with load detection function

A mobile charging and load detection technology, applied in the direction of charging/maintenance charging/discharging, battery circuit devices, current collectors, etc., can solve the problems of increasing the cost of mobile power supply and the complexity of the system, and achieve the effect of saving costs and facilitating system integration

Active Publication Date: 2017-05-24
SILERGY SEMICON TECH (HANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires an independent detection port wake, and the system is more complicated, which increases the cost of the mobile power supply

Method used

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  • A mobile charging power supply with load detection function
  • A mobile charging power supply with load detection function
  • A mobile charging power supply with load detection function

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Embodiment Construction

[0026] Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0027] refer to figure 2 Shown is the circuit diagram of the mobile charging power supply with load detection function according to the present invention. The mobile charging power supply of the present invention receives the electric energy of the external power supply and stores it for backup, so as to charge mobile devices such as mob...

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Abstract

The invention discloses a mobile charging source with the load detection function. A comparator is arranged in a boosting module, the voltage differences between the input end and the output end of the boosting module are compared through the comparator in real time, and therefore whether the output end is connected to a load or not can be judged. By the adoption of the mobile charging source, a first switching circuit is used for adjusting and controlling the voltage leap of the boosting module under the no-load condition and the load connected condition so that the mobile charging source can maintain normal work when the transient load is changed. By the adoption of the scheme, compared with the prior art, detection core pins can be reduced, cost is saved, and an integrally-packaged chip can be conveniently manufactured.

Description

technical field [0001] The invention relates to the field of switching power supplies, and more specifically, relates to a mobile charging power supply with a load detection function. Background technique [0002] The current structural diagram of the mobile charging power supply with load insertion automatic recognition function is as follows: figure 1 As shown, the system consists of a charging module, a boost module, a load detection circuit, and a control circuit. The external adapter charges the battery through the charging module, and then raises the battery voltage to an appropriate voltage, such as 5V, through the boost module, and then connects to the standard USB interface. When the output terminal of the boost module is not connected to the load, the system enters the standby state, the circuit of the boost module is turned off, the gate drive signal of the power switch tube Q1 is at low level, Q1 is in the off state, and its drain voltage is zero , when the loa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/34H02J7/10
CPCH01M10/4257H02J7/0069Y02E60/10
Inventor 陈圣军孙良伟
Owner SILERGY SEMICON TECH (HANGZHOU) CO LTD