CN201051664Y

CN201051664Y - Power supply device and equipment

Info

Publication number: CN201051664Y
Application number: CN200720001135.5U
Authority: CN
Inventors: 吴峰羽
Original assignee: Acbel Polytech Inc
Current assignee: Acbel Polytech Inc
Priority date: 2006-12-08
Filing date: 2007-01-19
Publication date: 2008-04-23
Anticipated expiration: 2017-01-19
Also published as: TWI325670B; TW200826401A

Abstract

The utility model relates to a power source supplying device and appliances, which can be applicable to hot swap judgment. The power supply device comprises two conductive terminals and a device connection detection terminal, wherein the two conductive terminals are correspondingly connected with a connector of an outer device module to form a power-supplying return circuit. The device connection is connected in short-circuit with one of conductive terminal through the connector during the formation of the return circuit, and the output state of the power supply device is decided by means of determining the connection state of the device connection detection terminal and the conductive terminals, thereby achieving the decision function when plugged or pulled the outer device module, and effectively avoiding generating save surge current or surge of the voltage when installed or removed the outer device module.

Description

Power Supply Device And Apparatus

Technical field

What the present invention relates to is a kind of power equipment, refer to especially a kind of have the plug detect function, cause the Power Supply Device And Apparatus of the curtage surging of surging in the time of can preventing to install or remove an external equipment.

Background technology

General distributed power supply system or server power supply feeding mechanism provide power supply and give a plurality of EM equipment module.Right because the installing of described EM equipment module/remove is the as easy as rolling off a log initiation curtage surging of surging in the process, therefore before installing/removing described EM equipment module, usually necessary powered-down feeding mechanism, to avoid causing EM equipment module or power supply device to damage, only so way is real inconvenient, and has a strong impact on the operation and the use of EM equipment module.

For addressing the above problem, at present visible on the market a kind of can be under the situation of power supply unit start, freely install/remove the external equipment module, promptly existing power supply device with hot plug design can avoid the installing of EM equipment module/remove to produce the curtage surging of surging in the process.

The power supply device of described hot plug design mainly is connector, a control integrated circuit IC and the power control circuit with the not isometric conducting terminal of plural number.Described complex conduction terminal is to be connected with the joint of EM equipment module, described control IC is then monitored the connection status of each conducting terminal and joint, in the installation of EM equipment module/remove in the process if the conducting terminal of power supply device is connected with joint/separates, described control IC controllable power feeding mechanism is temporarily stopped power supply, with the generation of the curtage surging of avoiding surging.

In the design of above-mentioned hot plug, not only processing procedure is comparatively complicated to have the connector of conducting terminal of different length, and also needs more part in the installation process and make manufacturing cost improve, and therefore still remains further to be improved scheme.

Summary of the invention

More simplify for the plug checking circuit design that makes power supply device, main purpose of the present invention is providing a kind of power supply device and equipment, and it is component part comparatively simply, finishes the hot plug arbitration functions as power supply device.

For reaching major technique means that aforementioned purpose takes is to make the aforementioned power source feeding mechanism can the corresponding joint that connects an external equipment module, and comprises:

One power supply has one first and one second conducting terminal, and described first is to constitute a current supply circuit in order to the joint that is connected described external equipment module with one second conducting terminal;

One current-limiting circuit is to be connected between the aforementioned power source and first conducting terminal to control the output of described first conducting terminal;

One device binding detects terminal, and when described first and second conducting terminal was connected with the joint of external equipment module, it was to form short circuit by described joint with described second conducting terminal to be connected that described device binding detects terminal;

One checking circuit is to connect aforementioned power source, device to link and detects terminal and current-limiting circuit, links the connection status that detects terminal and second conducting terminal with monitoring device, has so judged whether installation/remove joint, and then has controlled the power supply state of power supply.

A kind of electronic equipment also is provided, and it comprises: above-mentioned power supply device, it also comprises: a joint, described power supply device is connected with working power by described joint.

Utilize above-mentioned technological means, the present invention is when connecting the joint of described external equipment module, can rely on described checking circuit to judge that described device links the connection status that detects the terminal and second conducting terminal, power supply state with the control power supply, described device binding detects terminal and checking circuit can make power supply device have the function of hot plug so power supply device of the present invention only needs to be provided with more, therefore not only processing procedure can be simplified, manufacturing cost can be effectively reduced in addition.

Description of drawings

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

Fig. 2 is the equivalent circuit diagram that a preferred embodiment of the present invention is connected with the joint of an EM equipment module.

Description of reference numerals: 11-power supply; 12-first conducting terminal; The binding of 13-device detects terminal; The 14-current-limiting circuit; 15-second conducting terminal; The 16-checking circuit; The 161-comparator; The 20-joint.

Embodiment

Be applied in a preferred embodiment of power supply device about the present invention, see also Fig. 1 and shown in Figure 2, described power supply device can connect to supply its working power for an external equipment module, when both connected, described external equipment module was to be connected with power supply device with a joint 20; And described power supply device comprises:

One power supply 11;

One first conducting terminal 12 and one second conducting terminal 15 are to connect aforementioned power source 11, constitute a current supply circuit for joint 20 connections of described external equipment module;

One current-limiting circuit 14 is to be connected between the aforementioned power source 11 and first conducting terminal 12, and non-transformer output is arranged on described first conducting terminal 12 of described current-limiting circuit 14 may command; In addition, described current-limiting circuit 14 can be the integrated circuit (IC) of model ISL6115, ISL6116, ISL6117, ISL6120 and LTC4211;

One device links and to detect terminal 13, and when the joint 20 that when the external equipment module is connected described first and second conducting terminal 1215, described device linked and detects terminal 13 and can be connected with 15 short circuits of second conducting terminal by described joint 20;

One checking circuit 16, be to connect aforementioned power source 11, current-limiting circuit 14 and the binding of described device to detect terminal 13, link the connection status that detects the terminal 13 and second conducting terminal 15 by monitoring described device, having judged whether installation/remove joint 20, and then whether control current-limiting circuit 14 temporarily interrupts power supply.

About an embodiment of described checking circuit 16, please cooperate and consult shown in Figure 1ly, be to constitute by a comparator 161, wherein:

The negative terminal input of described comparator 161 is to connect a reference voltage Vref;

The anode input of described comparator 161 is to connect described device binding to detect terminal 13, and connects described power supply 11 to obtain a magnitude of voltage big than reference voltage Vref by a resistance R;

The output of described comparator 161 is to connect aforementioned current-limiting circuit 14.

Please further consult Fig. 1 and shown in Figure 2, cooperate the embodiment of above-mentioned checking circuit 16, the function mode of power supply device of the present invention is as described below:

When the joint 20 of external equipment module does not connect described first and second conducting terminal 1215, described device binding detects terminal 15 and second conducting terminal 15 is to be open circuit, therefore the voltage of sending into the input of comparator 161 anodes is greater than the voltage of sending into the negative terminal input, so the output of comparator 161 is to send a high levle signal to give current-limiting circuit 14; When current-limiting circuit 14 receives described high levle signal, then start described current-limiting circuit 14, the output of restriction power supply 11.

When described joint 20 connects first and second conducting terminal 1215 and inserts fully when appropriate, please cooperate consult shown in Figure 2, it is to be connected with 15 short circuits of second conducting terminal by described joint 20 that described device binding this moment detects terminal 13, therefore order is sent into the voltage instantaneous reduction of comparator 161 anodes input and is hanged down at the voltage of sending into the negative terminal input, so the output of comparator 161 is to send a low level signal to give current-limiting circuit 14; After described current-limiting circuit 14 receives described low level signal, described current-limiting circuit 14 is closed, therefore described power supply 11 at this moment just now normal power supply give the joint 20 of external equipment module.

Instead, when the joint 20 of external equipment module was extracted, the device binding

detects terminal

13 and 15 formation of second conducting terminal are opened circuit, and therefore described current-limiting circuit 14 starts once more, can be before joint 20 be extracted fully, slow power cutoff.

From the above, described checking circuit can rely on described device to link to detect terminal to be connected with the short circuit of second conducting terminal and monitor power supply device of the present invention whether installation/remove external equipment module is arranged, and control the output of described first conducting terminal immediately by described current-limiting circuit, so reach the function of hot plug; Compare the existing power supply feeding mechanism and must utilize the terminal of different length whether to detect the connection device module, the present invention need not make the terminal of different length and can have better simply processing procedure, thereby can effectively reduce manufacturing cost.

In sum, the present invention compares existing power supply device have been possessed apparent effect and has promoted, and meets the patent of invention important document, mentions application in accordance with the law.

More than explanation is novel just illustrative for this; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection range of the present utility model.

Claims

1. power supply device, it is characterized in that: it comprises:

One power supply circuit has one first and one second conducting terminal, and described first and second conducting terminal is to constitute a current supply circuit in order to the joint that connects an external equipment module;

One device binding detects terminal, and when described first and second conducting terminal was connected with the joint of described external equipment module, it was to form short circuit by described joint with described second conducting terminal to be connected that described device binding detects terminal;

One checking circuit is to connect aforementioned power source, device to link and detects terminal and current-limiting circuit, links the connection status that detects terminal and described second conducting terminal to monitor described device, and monitoring result is sent give described current-limiting circuit.

2. according to the described power supply device of claim 1, it is characterized in that: described checking circuit comprises a comparator, wherein:

The negative terminal input of described comparator is to connect a reference voltage;

The anode input of described comparator is to connect described device binding to detect terminal, and connects described power supply to obtain a magnitude of voltage big than reference voltage by a resistance;

The output of described comparator is to connect aforementioned current-limiting circuit.

3. electronic equipment that comprises the described power supply device of claim 1, it is characterized in that: it also comprises: a joint, described power supply device is connected with working power by described joint.

4. electronic equipment according to claim 3 is characterized in that: the checking circuit of described power supply device comprises a comparator, wherein: