CN210640721U

CN210640721U - Intelligent quick charger capable of independently and automatically adjusting voltage of preceding stage through double ports

Info

Publication number: CN210640721U
Application number: CN201921615241.1U
Authority: CN
Inventors: 李彦甫; 杨北京; 韩胜平; 韩立立
Original assignee: Shenzhen Yansheng Technology Co ltd
Current assignee: Shenzhen Yansheng Technology Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-05-29
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a quick charger of two mouthful independent automatically regulated preceding stage voltage intelligence, including traditional adapter, the output of traditional adapter is connected with C1 mouthful PMOS step-down DC-DC and C2 mouthful PMOS step-down DC-DC respectively, C1 mouthful PMOS step-down DC-DC's output is connected with first USB-C type interface, C2 mouthful PMOS step-down DC-DC's output is connected with second USB-C type interface, the utility model relates to an adapter technical field. This quick charger of independent automatically regulated preceding stage voltage intelligence of two mouthfuls has reached according to the output voltage condition to adapter output voltage automatically regulated, and overall efficiency has very big improvement.

Description

Intelligent quick charger capable of independently and automatically adjusting voltage of preceding stage through double ports

Technical Field

The utility model relates to an adapter technical field specifically is a two mouthful of independent automatically regulated preceding stage voltage intelligence quick charger.

Background

Existing dual C-port adapters. The two ports are completely independent. No intelligent allocation protocol is arranged between the two ports, and the PD protocol broadcast can not be subjected to wattage reduction broadcast when the double ports are simultaneously inserted into equipment. The preceding stage input voltage is fixed, and the efficiency is not high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a two mouthful of independent automatically regulated preceding stage voltage intelligence quick charger has solved two delivery outlet powers of current adapter and has added, and preceding stage input voltage is fixed, problem that efficiency is not high.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a quick charger of two mouthful of independent automatically regulated preceding stage voltage intelligence, includes traditional adapter, the output of traditional adapter is connected with C1 mouthful PMOS step-down DC-DC and C2 mouthful PMOS step-down DC-DC respectively, the output of C1 mouthful PMOS step-down DC-DC is connected with first USB-C type interface, the output of C2 mouthful PMOS step-down DC-DC is connected with second USB-C type interface.

Preferably, the output ends of the first USB-C type interface and the second USB-C type interface are connected to a control chip.

Preferably, the output end and the input end of the control chip are both connected with the first USB-C type interface and the second USB-C type interface, the USB-C type interface feeds the voltage and current precision back to the control chip, and the control chip transmits the quick charging protocol identification to the USB-C type interface.

Preferably, the output end of the control chip is respectively connected with the PMOS buck DC-DC with the port C1, the PMOS buck DC-DC with the port C2 and the traditional adapter, the control chip is respectively connected with the PMOS buck DC-DC with the port C1 and the PMOS buck DC-DC with the port C2 to realize the control of the PMOS switch, and the control chip is connected with the traditional adapter to control the 431 REF.

(III) advantageous effects

The utility model provides a two mouthful of independent automatically regulated preceding stage voltage intelligence quick charger. The method has the following beneficial effects:

this quick charger of independent automatically regulated preceding stage voltage intelligence of two ports through when two delivery outlets connect the load simultaneously, two port agreements of intelligence allotment realize that the load reduces the wattage of delivery outlet and reports simultaneously. The power sum is approximately 45W. The single-plug output port is in a quick charging mode, and the power is approximately 45W and 45W. Just so can make two mouths with 45W's shell and be 45W and 45W's fill soon, two mouths insert the effect of charging that also is 45W simultaneously, can not appear thermal protection yet, have very high price/performance ratio, reached according to the output voltage condition to adapter output voltage automatically regulated, overall efficiency has very big improvement.

Drawings

Fig. 1 is a block diagram of the overall structure of the present invention.

In the figure: the USB interface circuit comprises a traditional adapter 1, a PMOS step-down DC-DC with a port 2C1, a PMOS step-down DC-DC with a port 3C2, a second USB-C type interface 4, a first USB-C type interface 5 and a control chip 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a quick charger of two mouthful of independent automatically regulated preceding stage voltage intelligence, includes traditional adapter 1, and traditional adapter 1's output is connected with C1 mouthful PMOS step-down DC-DC2 and C2 mouthful PMOS step-down DC-DC3 respectively, and the output of C1 mouthful PMOS step-down DC-DC2 is connected with first USB-C type interface 5, and the output of C2 mouthful PMOS step-down DC-DC3 is connected with second USB-C type interface 4. The output ends of the first USB-C type interface 5 and the second USB-C type interface 4 are connected with a control chip 6. The output end and the input end of the control chip 6 are connected with the first USB-C type interface 5 and the second USB-C type interface 4. The output end of the control chip 6 is respectively connected with a PMOS step-down DC-DC2 of a port C1, a PMOS step-down DC-DC3 of a port C2 and the traditional adapter 1.

When the adapter is used, the adapter single-plug C1 port supports PD2.0/PD3.0/PPS, QC2.0, QC3.0, APPLE2.4A, BC 1.2. The protocol broadcasts 45W. (5V3A, 9V3A, 12V3A, 15V3A, 20 V2.25A). The single-insertion C2 port supports PD2.0/PD3.0/PPS, QC2.0, QC3.0, APPLE2.4A, BC 1.2. The protocol broadcasts 45W. (5V3A, 9V3A, 12V3A, 15V3A, 20 V2.25A). When two ports are plugged simultaneously, the dual-port protocol is intelligently deployed, and 18W is broadcasted through the port C1. Port C2 broadcasts 27W. The total power is again 45W. The main chip can realize the functions by two Yu-swarm technologies EJ899V plus simple peripheral circuits.

When only the C1 port is connected to the load, pin 22 of EJ899V will give a low level of 0V. Turn on q18. output VBUSC voltage. The pin 9 of the EJ899V controls the FB of the buck chip, and outputs a corresponding voltage after communicating with the load protocol. (5V/9V/12V/20V).

When only the C2 port is connected to the load, pin 22 of EJ899V will give a low level of 0V. Turn on q19 output VBUSC voltage. The pin 9 of the EJ899V controls the FB of the buck chip, and outputs a corresponding voltage after communicating with the load protocol. (5V/9V/12/20V).

When two outlets are connected with loads, two EJ899v intelligently allocate a double-port protocol, and the broadcasting of reducing the wattage of the two ports is realized.

EJ899V causes the adapter to output 13V through control 431REF when the voltage at both ports is lower than or equal to 12V, EJ899V causes the adapter to output 21V through control 431REF when the output voltage is higher than 12V. The output voltage of the adapter and the output voltage of the port C have the minimum voltage difference. The efficiency of the DC-DC part circuit is improved.

Control of output voltage of port C1 and port C2:

EJ899V has hardware and VBUS pin connection of C1/C2 mouth, has the GND pin of current detection resistance cluster income C1/C2 mouth simultaneously. Through such connection, EJ899V can detect the voltage and current of the port C1/C2.

Output voltage precision: the VBUS voltage of the port C1/C2 is detected, the voltage deviates from the voltage required by equipment, the signal of the FB can be changed, and the VBUS voltage is the same as the required voltage, so that the real-time closed-loop control system is realized.

Overvoltage protection: detecting the VBUS voltage at port C1/C2, which is higher than the voltage required by the device, can change the FB signal to cause the adapter to turn off the output or hiccup the output.

Overcurrent protection: detecting the VBUS current at port C1/C2, which is higher than the current demanded by the device, can change the FB signal to cause the adapter to turn off the output or hiccup the output.

Temperature protection: the EJ899V is internally provided with a temperature sensing module, when the sensed environment temperature exceeds the design value (the temperature value can be changed according to the design requirement), the FB signal is controlled to enable the adapter to close the output, and when the temperature returns to normal, the FB signal is controlled to enable the adapter to work again.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick charger of two mouthful independent automatically regulated preceding stage voltage intelligence, includes traditional adapter (1), its characterized in that: the output end of the traditional adapter (1) is respectively connected with a C1 port PMOS step-down DC-DC (2) and a C2 port PMOS step-down DC-DC (3), the output end of the C1 port PMOS step-down DC-DC (2) is connected with a first USB-C type interface (5), and the output end of the C2 port PMOS step-down DC-DC (3) is connected with a second USB-C type interface (4).

2. The intelligent fast charger with double ports capable of independently and automatically adjusting preceding stage voltage according to claim 1, is characterized in that: and the output ends of the first USB-C type interface (5) and the second USB-C type interface (4) are connected with a control chip (6).

3. The intelligent fast charger with double ports capable of independently and automatically adjusting preceding stage voltage according to claim 2, is characterized in that: and the output end and the input end of the control chip (6) are connected with the first USB-C type interface (5) and the second USB-C type interface (4).

4. The intelligent fast charger with double ports capable of independently and automatically adjusting preceding stage voltage according to claim 3, wherein: and the output end of the control chip (6) is respectively connected with a PMOS step-down DC-DC (2) with a port C1, a PMOS step-down DC-DC (3) with a port C2 and a traditional adapter (1).