CN210297298U

CN210297298U - Adapter simultaneously supporting type-c analog earphone and quick charging

Info

Publication number: CN210297298U
Application number: CN201921343135.2U
Authority: CN
Inventors: 刘树海
Original assignee: Guangdong Yinuo Communication Co Ltd
Current assignee: Guangdong Yinuo Communication Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-04-10
Anticipated expiration: 2029-08-19

Abstract

The utility model belongs to the technical field of the interface conversion, the adapter that supports type-c simulation earphone and quick charge simultaneously that provides, include: the device comprises a delay control circuit, a key, a single-pole double-throw analog switch, an earphone interface, a charging interface and a mobile phone interface; the key is electrically connected with the input end of the delay control circuit; the output end of the delay control circuit is electrically connected with the input end of the single-pole double-throw analog switch, and the output end of the single-pole double-throw analog switch is provided with the earphone interface and the charging interface; the mobile phone interface is used for being connected with an external mobile phone. The high-low level of the delay control circuit is turned over by the key control, so that the single-pole double-throw analog switch is controlled to identify the earphone and the charger to achieve the effect of using the earphone and simultaneously charging the earphone quickly, and the problem of low-current charging when the earphone is used is solved.

Description

Adapter simultaneously supporting type-c analog earphone and quick charging

Technical Field

The utility model belongs to the technical field of the interface conversion, especially, relate to a support type-c simulation earphone and quick charge's adapter simultaneously.

Background

At present, more and more mobile phones use a USB type-c interface, and most of the mobile phones adopt a design of sharing the type-c interface with a charging headset, so that the use of the mobile phones becomes simple and convenient, but another problem is caused, and the mobile phones cannot be charged simultaneously when the headset is used. For this reason, it is a problem that most users are troubled. Although the adapter is available on the market, the adapter can be used for simultaneously connecting the earphone and charging, the charging time is sacrificed, namely, the charging current is small and the efficiency is low, and the charging requirement cannot be met.

In summary, there is a need for a headset adapter that can solve the above-mentioned problems and can be used for fast charging while using the headset.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide an adapter for simultaneously supporting type-c analog earphones and fast charging, which aims to solve the problem of the prior art that fast charging is realized when earphones cannot be used.

In order to achieve the purpose, the utility model adopts the following technical proposal:

an adaptor for simultaneously supporting type-c analog headset and fast charging, comprising: the device comprises a delay control circuit, a key, a single-pole double-throw analog switch, an earphone interface, a charging interface and a mobile phone interface; the key is electrically connected with the input end of the delay control circuit; the output end of the delay control circuit is electrically connected with the input end of the single-pole double-throw analog switch, and the output end of the single-pole double-throw analog switch is provided with the earphone interface and the charging interface; the mobile phone interface is used for being connected with an external mobile phone.

Furthermore, the delay control circuit comprises a voltage comparator, and when the voltage at the + input end of the voltage comparator is higher than the voltage at the-input end of the voltage comparator, the output of the voltage comparator is at a high level; when the voltage at the "+" input terminal is lower than that at the "-" input terminal, the output of the voltage comparator is low level.

Further, when the output of the voltage comparator is at a high level, the single-pole double-throw analog switch is set to be high and is switched to the earphone interface to identify the earphone; when the output of the voltage comparator is at a low level, the single-pole double-throw analog switch is set to be low and performs quick charging.

Still further, the earphone interface is a 3.5mm interface.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a pair of support type-c simulation earphone and quick charge's adapter simultaneously, include: the device comprises a delay control circuit, a key, a single-pole double-throw analog switch, an earphone interface, a charging interface and a mobile phone interface; the key is electrically connected with the input end of the delay control circuit; the output end of the delay control circuit is electrically connected with the input end of the single-pole double-throw analog switch, and the output end of the single-pole double-throw analog switch is provided with the earphone interface and the charging interface; the mobile phone interface is used for being connected with an external mobile phone. The high-low level of the delay control circuit is turned over by the key control, so that the single-pole double-throw analog switch is controlled to identify the earphone and the charger to achieve the effect of using the earphone and simultaneously charging the earphone quickly, and the problem of low-current charging when the earphone is used is solved.

Drawings

Fig. 1 is a circuit diagram of a preferred embodiment of the present invention;

FIG. 2 is a diagram illustrating the effect of the present invention;

fig. 3 is a circuit frame diagram of the present invention.

Reference numerals:

100. time delay control circuit 200, button 300, single-pole double-throw analog switch

400. Earphone interface 500, interface 600 that charges, cell-phone interface

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1-3, the utility model provides a pair of support type-c simultaneously and simulate adapter of earphone and quick charge, include: the device comprises a delay control circuit 100, a key 200, a single-pole double-throw analog switch 300, an earphone interface 400, a charging interface 500 and a mobile phone interface 600; the key 200 is electrically connected with the input end of the delay control circuit 100; the output end of the delay control circuit 100 is electrically connected to the input end of the single-pole double-throw analog switch 300, and the output end of the single-pole double-throw analog switch 300 is provided with the earphone interface 400 and the charging interface 500; the mobile phone interface 600 is used for connecting with an external mobile phone.

Specifically, the earphone jack is inserted into the mobile phone through the adapter, the charger is also inserted into the mobile phone through the adapter, because the charger is inserted, a voltage of 5v is provided at the VBUS of the adapter, and a level of 3.3v is OUTPUT at the OUTPUT of the adapter, because of the insertion of the charger, a power supply passes through the VBUS, but the charger cannot be identified by the system, the mobile phone is charged at the current state by a small current (100mA-500mA), the key 200 is pressed, the level of the delay control circuit 100 is reversed, the single-pole double-throw analog switch 300 is switched to identify the quick charger, then the key 200 is released, the patch capacitor 22uF of the delay control circuit 100 starts to discharge, when one end discharges to 0.24v, the level is controlled by the delay control circuit 100 to be reversed again, at the time, the single-pole double-throw analog switch 300 is switched back to identify the earphone again, and at the time, the.

In some embodiments, the delay control circuit 100 includes a voltage comparator, the voltage comparator output is high when the voltage at the "+" input of the voltage comparator is higher than the voltage at the "-" input; when the voltage at the "+" input terminal is lower than that at the "-" input terminal, the output of the voltage comparator is low level.

In some embodiments, when the voltage comparator output is high, the single pole double throw analog switch 300 is set high and switches to the headset interface 400 identifying a headset; when the voltage comparator output is low, the spdt 300 is set to low and performs fast charging. The VBUS of the adapter has 5V voltage, the OUTPUT position OUTPUTs 3.3V level, after the SEL of the single-pole double-throw analog switch 300 is set to be high, the single-pole double-throw analog switch 300 switches to the left and right sound channels of the HDS _ L/R earphone, and the earphone can be identified at the moment. Because of the charging insertion, the VBUS of the adapter has power passing, but the system does not recognize the charger, the mobile phone is charged by low current (100mA-500mA) at the moment, if the mobile phone enters into quick charging, the key 200 is pressed, the voltage of the comparator OUTPUT of the delay control circuit 100 is reversed to become low level, the SEL of the single-pole double-throw analog switch 300 is switched to D1+/D1-, the D1+ and the D1-are connected through a 100 omega resistor, and then the quick charging (2A charging) is recognized as the quick charger. Similarly, when the button 200 is released, the spdt switch 300 switches back to the earphone path, and the earphone is ready for use, as will be described below with respect to the charger being in a fast charging state.

In some embodiments, the earphone interface 400 is a 3.5mm interface, and it should be noted that the earphone interface 400 is a 3.5mm universal earphone but is not limited to a 3.5mm interface.

To sum up, the utility model discloses a theory of operation as follows:

the utility model provides a pair of support type-c simulation earphone and quick charge's adapter simultaneously, include: the device comprises a delay control circuit 100, a key 200, a single-pole double-throw analog switch 300, an earphone interface 400, a charging interface 500 and a mobile phone interface 600; the key 200 is electrically connected with the input end of the delay control circuit 100; the output end of the delay control circuit 100 is electrically connected to the input end of the single-pole double-throw analog switch 300, and the output end of the single-pole double-throw analog switch 300 is provided with the earphone interface 400 and the charging interface 500; the mobile phone interface 600 is used for connecting with an external mobile phone. When the earphone is used, the adapter is only required to be inserted into the mobile phone interface 600, the earphone and the charger are inserted into the earphone interface 400 and the charging interface 500 corresponding to the adapter, the button 200 is pressed down to realize quick charging, and the function of the earphone is recovered after the button 200 is released. The high-low level of the delay control circuit 100 is controlled to be turned over by the keys 200, so that the single-pole double-throw analog switch 300 is controlled to identify the earphone and the charger, the earphone can be used and the charger can be rapidly charged, and the problem of low-current charging when the earphone is used is solved.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims

1. An adaptor for simultaneously supporting type-c analog headphones and fast charging, comprising: the device comprises a delay control circuit, a key, a single-pole double-throw analog switch, an earphone interface, a charging interface and a mobile phone interface; the key is electrically connected with the input end of the delay control circuit; the output end of the delay control circuit is electrically connected with the input end of the single-pole double-throw analog switch, and the output end of the single-pole double-throw analog switch is provided with the earphone interface and the charging interface; the mobile phone interface is used for being connected with an external mobile phone.

2. The adaptor of claim 1, wherein the delay control circuit comprises a voltage comparator, and when the voltage at the "+" input of the voltage comparator is higher than the "-" input, the output of the voltage comparator is high level; when the voltage at the "+" input terminal is lower than that at the "-" input terminal, the output of the voltage comparator is low level.

3. The adaptor of claim 2, wherein when the voltage comparator output is high, the single-pole double-throw analog switch is set high and switches to the earphone interface identification earphone; when the output of the voltage comparator is at a low level, the single-pole double-throw analog switch is set to be low and performs quick charging.

4. The adaptor for both type-c analog headset and fast charge support of claim 1, wherein the headset interface is a 3.5mm interface.