CN102403918A

CN102403918A - Power module and power supplier with same

Info

Publication number: CN102403918A
Application number: CN201010277007XA
Authority: CN
Inventors: 黄志忠; 蔡志明; 刘利伟; 黄俊渊
Original assignee: Chroma ATE Suzhou Co Ltd
Current assignee: Chroma ATE Suzhou Co Ltd
Priority date: 2010-09-07
Filing date: 2010-09-07
Publication date: 2012-04-04

Abstract

Provided are a power module and a power supplier with the same. The power module is used for receiving input electric energy from an external power source and accordingly transmitting the minimum output electric energy. The power module comprises a relative duty cycle control unit and a working time loss circuit, wherein the relative duty cycle control unit is used for receiving input electric energy and sets a relative duty cycle to a lower limit relative duty cycle so as to start to output original minimum output electric energy in a high potential mode at a starting working time within an operating cycle. The working time loss circuit is connected with the relative duty cycle control unit to receive the original minimum output electric energy and delay the starting working time, and accordingly the minimum output electric energy is output by utilizing a residual relative duty cycle less than the lower limit relative duty cycle. In addition, the invention further discloses a power supplier using the power module.

Description

Power model and have the power supply unit of this power model

Technical field

The present invention relates to a kind of power model, relate in particular to a kind of power model with operating time losser circuit.

Background technology

See also Fig. 1, Fig. 1 is the power model sketch map of prior art.The power model 100 of prior art comprises a cross liabilities cycle (duty cycle) control unit 11; Cross liabilities periodic Control unit 11 is in order to receive input electric energy Vin from external power source after; Export one through the adjustment cross liabilities cycle and export electric energy; And at present on the market cross liabilities periodic Control unit 11 all has a lower limit cross liabilities cycle when using; Change with speech promptly be that the output electric energy has a minimum value, when cross liabilities periodic Control unit 11 is adjusted to the lower limit cross liabilities during cycle with the cross liabilities cycle, power model 100 is promptly exported an original minimum output electric energy Va.

And usually need use high voltage in a lot of fields; General is that a plurality of power models 100 of series connection are realized as rule; For example, when a power supply unit has been connected three power models 100, then can obtain the accumulated value of the output electric energy of three power models 100 in output; Yet; Therefore when need of work used low-voltage, because the responsibility cycle control unit 11 in each power model 100 all has the lower limit cross liabilities cycle, the whole power supply unit minimum output electric energy that can provide then was three times the original minimum electric energy Va that exports.

In order to solve the too high problem of minimum output electric energy, prior art is to utilize the mode of frequency reducing to reduce the original minimum output electric energy Va of each power model 100, yet in electronic product, prevents electromagnetic interference (Electromagnetic Interference; EMI) be to design mostly, therefore in the time of the power supply unit frequency reducing, will cause the effect of anti-electromagnetic interference to reduce, and then influence the usefulness of electronic product to the noise of component frequency.

Summary of the invention

Technical problem and purpose that institute of the present invention desire solves:

Edge this; Main purpose of the present invention is to provide a kind of power model with operating time losser circuit; Export the initial operating time of electric energy to postpone original minimum, and then make power model can export a minimum output electric energy less than original minimum output electric energy.

The technological means that the present invention deals with problems:

A kind of power model is imported electric energy in order to receive one from external power source, and transmits minimum output electric energy according to this, and this power model comprises cross liabilities periodic Control unit and operating time losser circuit; Electric energy is imported in order to receive in cross liabilities periodic Control unit, and the cross liabilities cycle is set to a lower limit cross liabilities cycle, and so as to the initial operating time in operation period, beginning is with the original minimum output electric energy of high potential output; The operating time losser circuit is electrically connected at cross liabilities periodic Control unit receiving original minimum output electric energy, and postpones the initial operating time, so as to utilize one less than the last phase in lower limit cross liabilities cycle to responsibility cycle, the minimum output of output electric energy.

In a preferred embodiment of the present invention, this operating time losser circuit has in order to receive original minimum exports the input of electric energy, and exports the output of electric energy in order to export minimum, and comprises diode, resistance and electric capacity; Diode has anode and negative electrode, and anode is electrically connected at output, and negative electrode is electrically connected at input; Resistance is electrically connected between output and the input, and is parallelly connected with diode; Electric capacity is electrically connected at output and earth terminal.

The present invention's effect against existing technologies:

Compared to existing power model; The present invention utilizes an operating time losser circuit; So as to postponing the initial operating time of original minimum output electric energy, the last phase less than the lower limit cross liabilities cycle therefore capable of using is to responsibility cycle, and output is less than the minimum output electric energy of original minimum output electric energy; Change to say it; When power supply unit is connected a plurality of power model of the present invention, can make the accumulated value of the minimum value of output electric energy, and be able to power supply unit is applied in the purposes of low-voltage output less than the original minimum output electric energy of each power model.

Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.

Description of drawings

Fig. 1 is the power model sketch map of prior art;

Fig. 2 is the function block diagram of power model of the present invention;

Fig. 3 is original minimum first sketch map of exporting electric energy and the minimum output of output electric energy for the operating time losser circuit receives;

Fig. 4 is original minimum second sketch map of exporting electric energy and the minimum output of output electric energy for the operating time losser circuit receives;

Fig. 5 is the first example structure figure of operating time losser circuit; And

Fig. 6 is the power supply unit sketch map of a plurality of power models of the present invention of series connection.

Wherein, Reference numeral

Power model 100

Responsibility cycle control unit 11

Power model 200,200a, 200b, 200c

Cross liabilities

periodic Control unit

21,21a, 21b, 21c

Operating time

losser circuit

22,22a, 22b, 22c

Input electric energy Vin

Original minimum output electric energy Va

Minimum output electric energy Voa, min, Vob, min, Voc, min

Minimal accumulated output electric energy Vo, min

Diode D

Resistance R

Capacitor C

Embodiment

The present invention discloses a kind of power model, refers to a kind of power model with operating time losser circuit especially.Below enumerate a preferred embodiment now with explanation the present invention, right those skilled in the art know that all this is merely for example, and are not in order to limit invention itself.The detailed description of relevant this preferred embodiment is following.

See also Fig. 2, Fig. 3 and Fig. 4; Fig. 2 is the function block diagram of power model of the present invention; Fig. 3 is original minimum first sketch map of exporting electric energy and the minimum output of output electric energy for the operating time losser circuit receives, and Fig. 4 is second sketch map of original minimum output electric energy of operating time losser circuit reception and output minimum output electric energy.Power model 200 of the present invention is imported electric energy Vin in order to receive one from external power source, and transmits minimum output electric energy Voa according to this, and min, this power model 200 comprise cross liabilities periodic Control unit 21 and operating time losser circuit 22.

Electric energy Vin is imported in order to receive in cross liabilities periodic Control unit 21, and the cross liabilities cycle is set to a lower limit cross liabilities cycle, and so as to the initial operating time in operation period, beginning is with the original minimum output electric energy Va of high potential output; With Fig. 3 is example; The time of each operation period is Ta; And the cross liabilities cycle is set to a lower limit cross liabilities during cycle when cross liabilities periodic Control unit 21, if the temporal summation of an interior high potential of operation period is Tb, then the lower limit cross liabilities cycle is Tb/Ta.

Operating time losser circuit 22 is electrically connected at cross liabilities periodic Control unit 21 to receive original minimum output electric energy Va; And postpone the initial operating time; So as to utilize one less than the last phase in lower limit cross liabilities cycle to responsibility cycle, the minimum output of output electric energy Voa, min; With Fig. 3 is example; The initial operating time of original minimum output electric energy Va is time 0 and time T a originally; If operating time losser circuit 22 is with initial on-time delay Tc, then minimum is exported electric energy Voa, and the initial operating time of min then is time T c and time T a+Tc; And minimum output electric energy Voa, min exports responsibility cycle (Tb-Tc)/Ta with the last phase less than lower limit cross liabilities cycle T b/Ta.

Further, be example with Fig. 4, when operating time losser circuit 22 surpasses Tb with the original minimum initial on-time delay of exporting electric energy Va; Then minimum output electric energy Voa, the last phase of min is 0 then to responsibility cycle, changes to say it; Minimum output electric energy Voa, the magnitude of voltage of min is 0.

In order to realize power model of the present invention, the operating time losser circuit can have numerous embodiments, here only with a preferred embodiment as explanation, see also Fig. 5, Fig. 5 is the first example structure figure of operating time losser circuit.In this preferred embodiment, operating time losser circuit 22 can have in order to receive original minimum exports the input of electric energy Va, and exports electric energy Voa in order to export minimum, the output of min, and comprise diode D, resistance R and capacitor C; Diode D has anode and negative electrode, and anode is electrically connected at output, and negative electrode is electrically connected at input; Resistance R is electrically connected between output and the input, and is parallelly connected with diode D; Capacitor C then is electrically connected at output and earth terminal; Therefore when original minimum output electric energy Va after the input of operating time losser circuit 22 is imported; Capacitor C then begins to accumulate electric energy; And accumulation voltage surpasses the reference voltage V of high potential when the time arrives Tc and Ta+Tc ', and when original minimum output electric energy Va when time T b is in electronegative potential, then conducting and capacitor C is discharged and make the minimum electric energy Voa that exports of diode D; Min is in electronegative potential equally when time T b; The initial on-time delay Tc of electric energy Va be can original minimum be exported thus, and responsibility cycle (Tb-Tc)/Ta output minimum electric energy Voa, min exported with last phase less than lower limit cross liabilities cycle T b/Ta.

Comprehensively the above sees also Fig. 6, and Fig. 6 is the power supply unit sketch map of a plurality of power models of the present invention of series connection.When power supply unit 300 had been connected three

power model

200a, 200b and 200c, if cross liabilities

periodic Control unit

21a, 21b and 21c all are set to a lower limit cross liabilities cycle with the cross liabilities cycle, then three

power model

200a, 200b and 200c can export minimum output electric energy Voa respectively; Min, Vob, min and Voc, min; And the minimal accumulated of power supply unit 300 output electric energy Vo, min promptly equal minimum output electric energy Voa, min, Vob; Min and Voc, the summation of min; Wherein, minimum output electric energy Voa, min, Vob, min and Voc, the minimum value of min is 0, looks closely the design of operating time

losser circuit

22a, 22b and 22c and decides, with the example of Fig. 5 then be apparent resistance R resistance value and capacitor C electric capacity matter and decide.

Can know discovery; Compared to existing power model 100, the present invention utilizes an operating time losser circuit 22, so as to postponing the initial operating time of original minimum output electric energy Va; Therefore the last phase less than the lower limit cross liabilities cycle capable of using is to responsibility cycle; Output is less than the minimum output electric energy Voa of original minimum output electric energy Va, and min changes to say it; When power supply unit 300 series connection a plurality of power model 200a of the present invention, 200b and 200c; Can make minimal accumulated output electric energy Vo, the minimum value of min is exported the accumulated value of electric energy less than the original minimum of each

power model

200a, 200b and 200c, and is able to power supply unit 300 is applied in the purposes of low-voltage output.

Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. a power model is imported electric energy in order to receive one from an external power source, and transmits a minimum output electric energy according to this, it is characterized in that this power model comprises:

One cross liabilities periodic Control unit; Should import electric energy in order to receive; And the cross liabilities cycle of this cross liabilities periodic Control unit in each operation period be set to a lower limit cross liabilities cycle; So as to the initial operating time in this operation period, beginning is exported an original minimum output electric energy with a high potential; And

One operating time losser circuit; Be electrically connected at this cross liabilities periodic Control unit in order to receive this original minimum output electric energy; And postpone this initial operating time, so as to utilize one less than the last phase in this lower limit cross liabilities cycle to responsibility cycle, output should minimum be exported electric energy.

2. power model according to claim 1 is characterized in that, this operating time losser circuit has in order to receive this original minimum exports an input of electric energy, and exports an output of electric energy in order to export this minimum, and comprises:

One diode has an anode and a negative electrode, and this anode is electrically connected at this output, and this negative electrode is electrically connected at this input;

One resistance is electrically connected between this output and this input, and is parallelly connected with this diode; And

One electric capacity is electrically connected at this output and an earth terminal.

3. power supply unit; Comprise a plurality of power models as claimed in claim; It is characterized in that these a plurality of power models are series connection each other, should import electric energy to receive from this external power source respectively; And transmit respectively and should minimum export electric energy, form minimal accumulated output electric energy so as to a output in this power supply unit.