CN204316365U

CN204316365U - A kind of adapter

Info

Publication number: CN204316365U
Application number: CN201420801903.5U
Authority: CN
Inventors: 柳帅; 陈玉
Original assignee: Inventec Appliances Shanghai Corp; Inventec Appliances Pudong Corp; Inventec Appliances Corp
Current assignee: Inventec Appliances Shanghai Corp; Inventec Appliances Pudong Corp; Inventec Appliances Corp
Priority date: 2014-12-16
Filing date: 2014-12-16
Publication date: 2015-05-06
Anticipated expiration: 2024-12-16

Abstract

The utility model provides a kind of adapter, comprising: the rectification circuit be coupled successively, reduction voltage circuit, identification trusted authentication chip and filter circuit.By increasing, the utility model identifies that trusted authentication chip can prevent consumer from using the adapter of other unofficial configurations, reduce in the damage using the adapter of unofficial configuration to cause product.Further, preventing from causing blast when charging to product, causing personal injury.

Description

A kind of adapter

Technical field

The utility model relates to communication technique field, particularly a kind of adapter.

Background technology

Adapter is an interface convertor, and it can be an independently hardware interface device, allows hardware or electrical interface to be connected with other hardware or electrical interface; Also can be information interface, the such as interconnecting device etc. of power supply adaptor, tripod mount switching part, USB and serial ports.

Power supply adaptor is the power supply conversion equipment of small portable electronic device and electronic apparatus, is generally made up of shell, power transformer and rectification circuit, can be divided into exchange output type and direct-current-output type by its output type; Direct Plug-In and Table top type can be divided into by connected mode.Mobile PC is not owing to having battery, and power supply adaptor is particularly important to it.

Smart mobile phone, panel computer brand a lot, have the products such as iphone, ipad of IOS system, also have the product such as the Samsung of android system, HTC, Huawei in the market.Therefore, the adapter of smart mobile phone, panel computer is also of a great variety, and in addition, the adapter of mountain vallage is also full of in the market.If do not use the adapter that official configures, namely original-pack adapter, probably causes damage to product, even causing blast when charging to product, causing personal injury.

Therefore, need now to design a kind of new adaptor, to identify whether this adapter is the adapter that official configures.

Utility model content

The purpose of this utility model is to provide a kind of adapter, to solve when using the adapter of Bu Shi official configuration, product is caused to the problem of damage.

For solving the problems of the technologies described above, the utility model provides a kind of adapter, comprising: the rectification circuit be coupled successively, reduction voltage circuit, identification trusted authentication chip and filter circuit.

Further, in described adapter, described identification trusted authentication chip is the power management chip with power management bus transfer agreement.

Further, in described adapter, described power management chip has power management bus transfer interface.

Further, in described adapter, built-in band point EPROM (Erasable Programmable Read Only Memory) in described power management chip.

Further, in described adapter, described power management chip comprises mosfet driver.

Further, in described adapter, described identification trusted authentication chip is LTC3883.

Further, in described adapter, described rectification circuit comprises transformer, rectification main circuit and filter.

Further, in described adapter, described filter circuit comprises some reactance components.

Further, in described adapter, described reactance component comprises one or more of resistance, electric capacity and inductance.

The adapter that the utility model provides has following beneficial effect: by increasing, the utility model identifies that trusted authentication chip can prevent consumer from using the adapter of other unofficial configurations, reduces in the damage using the adapter of unofficial configuration to cause product.Further, preventing from causing blast when charging to product, causing personal injury.

Accompanying drawing explanation

Fig. 1 is the structural representation of the adapter of the utility model embodiment;

Fig. 2 is that the adapter of the utility model embodiment mates with a terminal and is connected flow chart.

Embodiment

Below in conjunction with the drawings and specific embodiments, the adapter that the utility model proposes is described in further detail.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, aid illustration the utility model embodiment lucidly.

Please refer to Fig. 1, it is the structural representation of the adapter of the utility model embodiment.As shown in Figure 1, the utility model provides a kind of adapter to comprise: the rectification circuit 10 be coupled successively, reduction voltage circuit 20, identification trusted authentication chip 30 and filter circuit 40.The utility model supply power voltage is 220V/50Hz civil power, obtains direct current through rectification circuit 10, then obtains required direct current through reduction voltage circuit 20, eventually passes and identifies that authentication circuit 30 and filter circuit 40 export the direct current of 5V/1A.

Specifically, described rectification circuit 10 is circuit AC energy being converted to direct current energy, comprises transformer, rectification main circuit and filter.Described filter circuit 40 is the ripples in elimination Output Voltage in Rectified Circuits, comprise some reactance components, and described reactance component comprises resistance, electric capacity and inductance one or more.

Furthermore, described identification trusted authentication chip 30 is the power management chips with power management bus transfer agreement (PMBus agreement).The present embodiment for LTC3883, but is not limited only to this.LTC3883 is a one phase synchronous buck type DC/DC controller, and it has PMBus interface, for digital control and supervision.Be integrated with mosfet driver further, and built-in band point EPROM (Erasable Programmable Read Only Memory) (EEPROM), in order to store information.

In the utility model, as shown in Figure 2, first, terminal adopts random authentication ink recorder system, terminal can when first time shakes hands with adapter, CPU tandom number generator produces a string identification code, and this identification code is produced by CPU inside at random, can effectively prevent unofficial manufacturer from stealing, the identification code of generation is sent in the EEPROM identifying trusted authentication chip, and be kept in this EEPROM, preserve this identification code in the terminal, so that certification when connecting from now on simultaneously.Subsequently, in terminal afterwards and adapter connection procedure, terminal reads the identification code in adapter EEPROM as main frame, then this identification code and the identification code stored in the terminal is carried out matching ratio pair, if mate completely, then starts to charge to terminal; If Incomplete matching, then terminal is not charged.

In sum, by increasing, the utility model identifies that trusted authentication chip can prevent consumer from using the adapter of other unofficial configurations, reduces in the damage using the adapter of unofficial configuration to cause product.Further, preventing from causing blast when charging to product, causing personal injury.

Foregoing description is only the description to the utility model preferred embodiment; any restriction not to the utility model scope; any change that the those of ordinary skill in the utility model field does according to above-mentioned disclosure, modification, all belong to the protection range of claims.

Claims

1. an adapter, is characterized in that, comprising: the rectification circuit be coupled successively, reduction voltage circuit, identification trusted authentication chip and filter circuit.

2. adapter as claimed in claim 1, it is characterized in that, described identification trusted authentication chip is the power management chip with power management bus transfer agreement.

3. adapter as claimed in claim 2, it is characterized in that, described power management chip has power management bus transfer interface.

4. adapter as claimed in claim 2, is characterized in that, built-in band point EPROM (Erasable Programmable Read Only Memory) in described power management chip.

5. adapter as claimed in claim 2, it is characterized in that, described power management chip comprises mosfet driver.

6. adapter as claimed in claim 2, it is characterized in that, described identification trusted authentication chip is LTC3883.

7. adapter as claimed in claim 1, it is characterized in that, described rectification circuit comprises transformer, rectification main circuit and filter.

8. adapter as claimed in claim 1, is characterized in that, described filter circuit comprises some reactance components composition.

9. adapter as claimed in claim 8, is characterized in that, described reactance component comprises one or more of resistance, electric capacity and inductance.