CN1835364A - Switching circuit of d.c. power source - Google Patents
Switching circuit of d.c. power source Download PDFInfo
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- CN1835364A CN1835364A CN 200510055170 CN200510055170A CN1835364A CN 1835364 A CN1835364 A CN 1835364A CN 200510055170 CN200510055170 CN 200510055170 CN 200510055170 A CN200510055170 A CN 200510055170A CN 1835364 A CN1835364 A CN 1835364A
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Abstract
The switching circuit of dc power supply includes following parts: a first converter is in use for inputting a first clock from its input end; a second converter is in use for inputting a second clock from its input end; the control end of first switch is connected to the output end of first converter, and the input end of first switch is in use for inputting a power source; the control end of second switch is connected to the output end of second converter, and the input end of second switch is in use for connecting to the output end of the first switch, and increased voltage being at the output end; one end of first capacitance is connected to the output end of first switch, and the other is in use for inputting the second clock; one end of the second capacitance is connected to the output end of second switch, and the other end is connected to a shared ground potential electrically. The invention generates an effect of voltage increase for dc power source.
Description
Technical field
The present invention is a kind of direct-current power supply converting circuit, is applied in the electronic installation, and in order to produce the power supply of different voltage potentials, it is in particular a kind of booster type direct-current power supply converting circuit of controlling by transducer.
Background technology
Prosperity along with electronic industry, consumption electronic products are more and more for popularizing, especially after the extensive use of the prosperity of network and Information technology, the product that electronic information is relevant becomes the main product in market especially, for example: Thin Film Transistor-LCD, organic light emitting diode display etc.Usually these electronic products all need the various different voltages source, to provide inner disparate modules circuit to use, for example: the drive circuit of the drive circuit of scanning of a display signal, display data signal, backlight liquid crystal display power supply or other control circuit etc., the required operating voltage of its action is all inequality.
DC-DC converter (DC/DC Converter) is the present the most frequently used a kind of power-switching circuit that produces various different demand voltages, known common DC-DC converter has two kinds of voltage-dropping type (Buck) and booster types (Boost), with Fig. 1 is example, it is that a direct current boosts and reduction voltage circuit, it is by first and second clock (CLK1, CLK2) to drive different shift circuit (Level Shift) (LS1, LS2, LS3), again by shift circuit (LS1, LS2, LS3) output is controlled the different switch (SW1 of many groups respectively, SW2, SW3), those switches (SW1 again, SW2, SW3) be coupled to different electric capacity (C1, C2), and in order to control this electric capacity (C1, C2) its carrying out that discharges and recharges, as electric capacity (C1, C2) (SW1 left by the switch of input, SW2, when SW3) opening, electric capacity (C1, C2) begin charging, and this moment this electric capacity (C1, C2) the other end is in order to import the one the 3rd or the 4th clock (CLK3, CLK4), and the 3rd or the 4th clock (CLK3, CLK4) also has a voltage potential, so electric capacity (C1, C2) charging voltage the 3rd or the 4th clock (CLK3 that connects, CLK4) voltage potential, and produce a voltage that boosts.Boost again finish after, the switch of electric capacity (C1, C2) input can cut out, and the switch of electric capacity (C1, C2) output can be opened, and makes this booster voltage to export smoothly.
Yet above-mentioned DC boosting and reduction voltage circuit, use shift circuit (LS1, LS2, LS3) with control switch (SW1, SW2, SW3), because shift circuit (LS1, LS2, LS3) have the phenomenon of phase delay, therefore for guaranteeing the correct of phase place to reach the conversion efficiency of expection, in the time will adjusting (boosting or step-down) primary voltage, just need three groups of clocks to move at least, and in the time will adjusting (boosting or step-down) secondary voltage, then must could move by four groups of clocks, thereby the settings that cause needed clock generator also must organize more, the clock signal that those clock generators produced again, on display generally by soft printed circuit board (Flexible Print Circuit, FPC) being connected to this boosts and reduction voltage circuit, therefore the winding displacement number of this soft printed circuit board is also essential and then increases, and the winding displacement of clock generator and soft printed circuit board is counted the cost that increase will inevitably increase the manufacturing.
In addition when using shift circuit (LS1, LS2, LS3) as the controller of switch (SW1, SW2, SW3), this shift circuit (LS1, LS2, LS3) generally is made of a plurality of transistor, therefore can produce higher power consumption, therefore can cause the decay of integrated circuit electric charge on the contrary, the conversion efficiency of output is restricted.
Summary of the invention
Purpose of the present invention is to make booster circuit under the state that only uses two groups of clocks by the action of simple Nverter circuit with control switch, can when boosting, also can keep a high electric current under the situation of low consumpting power.
For reaching above-mentioned purpose, technical scheme of the present invention realizes like this:
A kind of direct-current power supply converting circuit comprises: one first transducer has an input in order to import one first clock; One second transducer has an input in order to import a second clock; One first switch has one in order to import the input of a power supply, and one is electrically connected at the control end of the output of this first transducer, and one in order to export the output of this power supply; One first electric capacity, it has a termination and is subjected to this second clock, is connected the output of this first switch with the other end, and sets up first voltage that is higher than the current potential of this power supply; One second switch has the output that an input connects this first switch, and one is electrically connected at the control end of the output of this second transducer, and the output of this first voltage of output; And one second electric capacity, it has an end and is connected to an earthing potential of sharing, and the other end connects the output of this second switch.
Wherein, the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of this first transducer.Wherein, the input of this push-pull type transducer is electrically connected at this first clock, and having the control end that an output is electrically connected at first switch, a high potential link is electrically connected at the output of first switch, and an electronegative potential link is electrically connected at the earthing potential that this is shared.Wherein, the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of this second transducer.Wherein, the input of this push-pull type transducer is electrically connected at this second clock, and having the control end that an output is electrically connected at second switch, a high potential link is electrically connected at the output of second switch, and an electronegative potential link is electrically connected at an earthing potential of sharing.Wherein, the diode of the further forward bias voltage drop in parallel of this first switch.
A kind of direct-current power supply converting circuit promotes in order to the voltage of making second order, and this direct-current power supply converting circuit comprises: one first transducer has an input in order to import one first clock; One second transducer has an input in order to import a second clock; One first switch has one in order to import the input of a power supply, and one is electrically connected at the control end of the output of this first transducer, and one in order to export the output of this power supply; One first electric capacity, it has a termination and is subjected to this second clock, is connected the output of this first switch with the other end, and sets up first voltage that is higher than the current potential of this power supply; One second switch has the output that an input connects this first switch, and one is electrically connected at the control end of the output of this second transducer, and the output of this first voltage of output; And one second electric capacity, it has an end and is connected to this first clock, and the other end connects output 1 the 3rd transducer of this second switch, has an input in order to import this first clock; One the 3rd switch has the output that an input connects this second switch, and a control end is in order to being electrically connected at the output of the 3rd transducer, and an output; And one the 3rd electric capacity, it has an end and connects the earthing potential that this is shared, and the other end is electrically connected at the output of the 3rd switch.
Wherein, the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of the 3rd transducer.Wherein, the input of this push-pull type transducer is electrically connected at this first clock, and it has the control end that an output is electrically connected at the 3rd switch, and a high potential link is electrically connected at the output of the 3rd switch, and an electronegative potential link is electrically connected at an earthing potential of sharing.
A kind of apparatus for converting DC power promotes in order to the voltage of making single order, and it comprises: one first conversion equipment, for input one first clock; One second conversion equipment is for input one second clock; One first headstock gear, in order to receiving a power supply, and newspaper is controlled passing through of this power supply according to the output signal of this first conversion equipment; One increasing apparatus in order to according to this second clock and this power supply of being passed through by this first headstock gear, and makes this first headstock gear output one be higher than first voltage of this power supply potential; One second headstock gear, in order to receiving this first voltage, and according to the output signal of this second conversion equipment, and control passing through of this first voltage; And a stored voltage device, in order to store the voltage that this second headstock gear is exported.
The invention provides a kind of direct-current power supply converting circuit, it comprises two groups of transducers, two groups of switches and two electric capacity are formed, push-pull type (Push-Pull) transducer that those transducers are made of a P type metal oxide semiconductor field effect transistor (MOSFET) and a N type metal oxide semiconductor field effect transistor especially, the effect that it has low consumpting power and can provide useful signal to amplify again, therefore can not consume too much power, and because of it does not have serious phase delay problem, make the known direct-current power supply converting circuit of wanting four groups of clocks to operate, simplified as long as two groups of clocks can operate.
Those switches are subjected to the output of those transducers and control, and the on off state of two switches presents the state of phase inverse correspondence, when just being unlatching as if a switch, another switch then must be for cutting out the direction that those switches are mainly exported in order to its carrying out that discharges and recharges of control capacitance and electric charge.
One of them is (Flying) electric capacity that goes at express speed for these two electric capacity, the one termination is subjected to those clocks and sets up a reference potential, the other end of electric capacity then receives a charging potential, by reference potential and both series connection effects of charging potential, and reach the effect that voltage promotes, another electric capacity then is a storage capacitors, and the one end is electrically connected at the output after voltage promotes, and the other end then is connected to an earthing potential.
In order to make direct-current power supply converting circuit of the present invention, charge efficiency when beginning to start is more quick, can be on first switch diode in parallel, characteristic by the unidirectional conducting of diode, when transducer does not drive this first switch as yet, one charging circuit can be provided fast, first electric capacity can be charged rapidly.
By enforcement of the present invention, can reach following progressive effect at least:
One,, can reduce the quantity of clock, thereby make the design of circuit more simplify and reduce cost by enforcement of the present invention.
Two, by enforcement of the present invention, can reduce the winding displacement number of soft printed circuit board, except reducing cost, more can reduce the problem of part electromagnetic interference (EMI, Electromagnetic Interference).
Three, by enforcement of the present invention, use of the action of push-pull type transducer with control switch, it has the characteristic of the simple and low consumption electric power of circuit, and therefore the driving force that can promote direct-current power supply converting circuit has high electric current simultaneously.
For making purpose of the present invention, structural feature and function thereof there are further understanding, now are described in detail as follows in conjunction with related embodiment and accompanying drawing:
Description of drawings
Fig. 1 is a known DC boosting and a reduction voltage circuit.
Fig. 2 implements illustration for the direct-current power supply converting circuit that single order boosts.
The main waveform schematic diagram that Fig. 3 boosts for single order.
Fig. 4 implements illustration for the direct-current power supply converting circuit that second order boosts.
The main waveform schematic diagram that Fig. 5 boosts for second order.
Wherein, description of reference numerals is as follows:
The direct-current power supply converting circuit that 10 single orders boost
11 first transducers
12 second transducers
13 the 3rd transducers
The direct-current power supply converting circuit that 20 second orders boost
C1 first electric capacity
C2 second electric capacity
C3 the 3rd electric capacity
CLK1 first clock
The CLK2 second clock
CLK3 the 3rd clock
CLK4 the 4th clock
The D diode
SW1 first switch
The SW2 second switch
SW3 the 3rd switch
The control end of G1 first switch
The control end of G2 second switch
The control end of G3 the 3rd switch
The GND earthing potential
The output of N1 first switch
The output of N2 second switch
The output of N3 the 3rd switch
T1 N type metal oxide semiconductor field effect transistor
T2 P type metal oxide semiconductor field effect transistor
The Vcc power supply
LS 1, LS2, LS3 shift circuit
Embodiment
Direct-current power supply converting circuit of the present invention is applied in the display circuit, and in order to produce a booster power, it can be divided into, and single order boosts, second order boosts ... N boosts on rank etc.Wherein boosting of each rank all can promote circuit to reach by one group, and each group promotes the electric capacity (end of electric capacity be connected in a clock) of circuit by two groups of transducers, two groups of switches and a tool boost function, and the output after boosting connects the electric capacity (end of electric capacity is a ground connection) of a tool stored voltage function more again.When desiring to carry out second order and boost, the circuit that can single order boosts is the basis, whenever sets up one group and promotes circuit, and the power supply that can double (Vcc) below will boost and second order boosts and specifies respectively according to single order.
＜single order the embodiment that boosts 〉
As shown in Figures 2 and 3, the direct-current power supply converting circuit that boosts for the present embodiment single order (10) is implemented the main waveform schematic diagram that illustration and single order boost.Direct-current power supply converting circuit (10) comprising: one first transducer (11), have one first translation function, and its input is in order to import one first clock (CLK1); One second transducer (12) has one second translation function, and its input is in order to import a second clock (CLK2); One first switch (SW1) has one first and opens and closes function, and the control end (G1) of this first switch (SW1) is electrically connected at the output of this first transducer (11), and the input of this first switch (SW1) is in order to import a power supply (Vcc) again; One second switch (SW2), have one second and open and close function, the control end (G2) of this second switch (SW2) is electrically connected at the output of this second transducer (12), the input of second switch (SW2) is electrically connected at the output (N1) of this first switch (SW1) again, and its output (N2) is a output after boosting; One first electric capacity (C1) has one first boost function, and the one end is electrically connected at the output of this first switch (SW1), and the other end is then in order to import this second clock (CLK2); And one second electric capacity (C2), having a stored voltage function, the one end is electrically connected at the output of this second switch (SW2), and the other end then is electrically connected at an earthing potential (GND) of sharing.
Above-mentioned direct-current power supply converting circuit (10), wherein the push-pull type transducer that constituted by a P type metal oxide semiconductor field effect transistor (T2) and a N type metal oxide semiconductor field effect transistor (T1) of this first transducer (11).The input of this push-pull type transducer is in order to import this first clock (CLK1), output then is electrically connected at the control end (G1) of first switch (SW1), and the high potential link of push-pull type transducer is electrically connected at the output (N1) of first switch (SW1), and the electronegative potential link of push-pull type transducer is electrically connected at an earthing potential (GND) of sharing again.
Above-mentioned direct-current power supply converting circuit (10), wherein the push-pull type transducer that constituted by a P type metal oxide semiconductor field effect transistor (T2) and a N type metal oxide semiconductor field effect transistor (T1) of this second transducer (12).So the input of this push-pull type transducer is in order to import this second clock (CLK2), and output is electrically connected at the control end (G2) of second switch (SW2), and the high potential link of push-pull type transducer is electrically connected at the output (N2) of second switch (SW2), and the electronegative potential link of push-pull type transducer is electrically connected at an earthing potential (GND) of sharing again.
First electric capacity (C1) is the electric capacity that goes at express speed, the one termination is received a charging potential that comes from first switch (SW1), the other end is then in order to import a second clock (CLK2), and obtain a reference potential, by connecting of charging potential and reference potential, and reach the effect that voltage promotes, another second electric capacity (C2) is a storage capacitors, the one end is electrically connected at the output (N2) of this second switch (SW2), and the other end is electrically connected to earthing potential (GND), thus so that a galvanic current source to be provided.
When the direct-current power supply converting circuit (10) of present embodiment during in initial condition, because first transducer (11) must be subjected to just can moving after the triggering of first clock (CLK1) signal, and just can make first electric capacity (C1) begin charging after must controlling first switch (SW1) after it triggers again once more, therefore have the phenomenon of delay, in order to improve this delay phenomenon, present embodiment can further be gone up the diode (D) of a forward bias voltage drop in parallel in this first switch (SW1), characteristic by the unidirectional conducting of diode (D), make present embodiment in the initial at the beginning stage, this diode (D) promptly is subjected to the effect of power supply (Vcc) and forward conducting, and immediately a charging circuit easily is provided, first electric capacity (C1) can be charged rapidly.This diode (D) can give short circuit with the gate of a N type metal oxide semiconductor field effect transistor (T1) and source electrode and form again.
As shown in Figure 3, main waveform schematic diagram for present embodiment, cooperate the circuit description of Fig. 2 as follows again: the Vcc voltage that present embodiment provided is+5V, and first clock (CLK1) and second clock (CLK2) are 0V to Vcc (+5V) clock for phase phasic difference 180 degree and its voltage potential again.
Present embodiment is reached by first transducer (11), second transducer (12), first switch (SW1), second switch (SW2) and first electric capacity (C1) when doing the boosting of phase I.The carrying out that cooperates clock again, when first clock (CLK1) is positioned at a low voltage potential 0V, behind first transducer (11), has anti-phase characteristic by transducer, making the output of the transducer of winning (11) is a high voltage potential, and triggers first switch (SW1) and make its unlatching (this moment second switch be closed condition).
After first switch (SW1) is opened, input power supply+5Vcc charges to+5V first electric capacity (C1), second clock (CLK2) is one high voltage potential+5V at the same time, voltage+5V after voltage potential+5V of this second clock (CLK2) and first electric capacity (C1) boost is in series, therefore produce the booster voltage of one+10V (2Vcc), first clock (CLK1) transfers one high voltage potential+5V to afterwards, and make first switch (SW1) close (this moment, second switch was an opening), the voltage of the exportable one+10V of dimension (2Vcc).(SW2) is opening when second switch, and when exporting the voltage of one+10V (2Vcc), stores this voltage by one second electric capacity (C2), thereby can obtain a stable+10V direct voltage.
The voltage of second transducer (12) intercepting N2 is its high potential link, therefore when second transducer (12) reception, first clock (CLK2), anti-phase and amplify after, make the output of second transducer (12), just the control end (G2) of second switch (SW2) also produces the clock of a 0V to 10V (2Vcc), and the open and close of control second switch (SW2).
＜second order the embodiment that boosts 〉
As shown in Figure 4, the direct-current power supply converting circuit that boosts for the present embodiment second order (20) is implemented illustration.When desire of the present invention produces the voltage lifting of second stage, the direct-current power supply converting circuit (10) that can single order boosts this moment is the basis, set up one group again and promote circuit, different is, need second electric capacity (C2) originally was connected in the end of earth terminal, change is connected in one first clock (CLK1), this lifting circuit of setting up again, the voltage lifting circuit of itself and phase I, its share partly be one second transducer (12) and second switch (SW2) and with this second electric capacity (C2) by the boost annexation of usefulness of the annexation of storage capacitors instead, also therefore make this second electric capacity (C2) convert to and have one second boost function by having a stored voltage function.It increases part and comprises one the 3rd transducer (13), one the 3rd switch (SW3) and one the 3rd electric capacity (C3).The 3rd transducer (13) has one the 3rd translation function, and its input is in order to import one first clock (CLK1); The 3rd switch (SW3) has one the 3rd and opens and closes function, its control end (G3) is electrically connected at the output of the 3rd transducer (13), the input of the 3rd switch (SW3) is electrically connected at the output (N2) of this second switch (SW2) and electrically connects one second electric capacity (C2) again, and the other end of second electric capacity (C2) is in order to import one first clock (CLK1), the 3rd electric capacity (C3) has a stored voltage function again, the one end is electrically connected at the output of the 3rd switch (SW3), and the other end then is electrically connected at an earthing potential (GND) of sharing.
The 3rd transducer (13) is the push-pull type transducer that is made of a P type metal oxide semiconductor field effect transistor (T2) and a N type metal oxide semiconductor field effect transistor (T1) in present embodiment.So the input of this push-pull type transducer is electrically connected at this first clock (CLK1), and output is electrically connected at the control end (G3) of the 3rd switch (SW3), and the high potential link of push-pull type transducer is electrically connected at the output (N3) of the 3rd switch (SW3), and the electronegative potential link of push-pull type transducer is electrically connected at an earthing potential (GND) of sharing again.
As shown in Figure 5, the main waveform schematic diagram that boosts for second order, cooperate the circuit description of Fig. 4 as follows again: when present embodiment carries out boosting of second rank, the voltage that first rank are risen, reach by second transducer (12), the 3rd transducer (13), second switch (SW2), the 3rd switch (SW3) and second electric capacity (C2) again, store by the 3rd electric capacity (C3) more at last.The carrying out that cooperates clock, the state that the above-mentioned single order that continues boosts, the voltage of N1 position is+voltage of 10V (2Vcc), second switch (SW2) is for opening, but because the 3rd transducer (13) all is connected in identical first clock (CLK1) with first transducer (11), therefore the 3rd switch (SW3) is a closing state, the voltage of former being somebody's turn to do+10V (2Vcc) can charge to+10V second electric capacity (C2), first clock (CLK1) is one high voltage potential+5V at the same time, therefore first clock (CLK1) voltage potential+5V connect this second electric capacity (C2)+10V and produce the booster voltage of one+15V (3Vcc).Back second clock (CLK2) transfer one low voltage potential+0V to, and make second electronics close (this moment the 3rd switch be opening), the voltage of the exportable one+15V of dimension.
Because electric capacity has the characteristic of store charge, therefore when first clock (CLK1) transfers low voltage potential+0V to, second electric capacity (C2) still can maintain+voltage potential of 10V, therefore can produce the voltage pulse of one+10V (2Vcc) to+15V (3Vcc) in the position of N2, again because second transducer (12) intercepting N2 is its high-tension input, therefore second transducer (12) receives second clock (CLK2), with it anti-phase and amplify after, make the output of second transducer (12), just the control end (G2) of second switch (SW2) produces the clock of a 0V to 15V (3Vcc), and the open and close of control second switch (SW2).
When the 3rd switch (SW3) is an opening, the voltage of exportable one+15V (3Vcc), and can obtain a stable+15V direct voltage by the storage of one the 3rd electric capacity (C3), the 3rd transducer (13) intercepting N3 is the input of its voltage again, therefore the 3rd transducer (13) receives first clock (CLK1), anti-phase and amplify after, make the output of the 3rd transducer (13), just the control end (G3) of the 3rd switch (SW3) also produces the clock of a 0V to 15V (3Vcc), and controls the open and close of the 3rd switch (SW3).
First switch (SW1) of the above single order booster circuit and second order booster circuit, second switch (SW2) and the 3rd switch (SW3) are made of a metal oxide semiconductor field effect transistor (MOSFET).Those metal oxide semiconductor field effect transistors are if be replaced into thin-film transistor (Thin Film Transistor) or general transistor (NPN or PNP transistor) also has identical effect, so be equivalent replacement of the present invention again.
Again, except above-mentioned second-order circuit, the present invention also can go down according to the practice superposition of second-order circuit with respect to firstorder circuit, and becomes three rank, quadravalence circuit etc.Therefore, the above only is preferred embodiment of the present invention, when can not with limit the scope of the invention.Promptly the equalization of doing according to claims of the present invention generally changes and modifies, and will not lose main idea of the present invention place, and also without departing from the spirit or scope of the invention, the former capital should be considered as further execution mode of the present invention.
Claims (10)
1. direct-current power supply converting circuit is characterized in that comprising:
One first transducer has an input in order to import one first clock;
One second transducer has an input in order to import a second clock;
One first switch has one in order to import the input of a power supply, and one is electrically connected at the control end of the output of this first transducer, and one in order to export the output of this power supply;
One first electric capacity, it has a termination and is subjected to this second clock, is connected the output of this first switch with the other end, and sets up first voltage that is higher than the current potential of this power supply;
One second switch has the output that an input connects this first switch, and one is electrically connected at the control end of the output of this second transducer, and the output of this first voltage of output;
And
One second electric capacity, it has an end and is connected to an earthing potential of sharing, and the other end connects the output of this second switch.
2. direct-current power supply converting circuit as claimed in claim 1, wherein the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of this first transducer.
3. direct-current power supply converting circuit as claimed in claim 2, wherein the input of this push-pull type transducer is electrically connected at this first clock, and has a control end that an output is electrically connected at first switch, one high potential link is electrically connected at the output of first switch, and an electronegative potential link is electrically connected at the earthing potential that this is shared.
4. direct-current power supply converting circuit as claimed in claim 1, wherein the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of this second transducer.
5. direct-current power supply converting circuit as claimed in claim 4, wherein the input of this push-pull type transducer is electrically connected at this second clock, and has a control end that an output is electrically connected at second switch, one high potential link is electrically connected at the output of second switch, and an electronegative potential link is electrically connected at an earthing potential of sharing.
6. direct-current power supply converting circuit as claimed in claim 1, the wherein diode of the further forward bias voltage drop in parallel of this first switch.
7. a direct-current power supply converting circuit promotes in order to the voltage of making second order, it is characterized in that this direct-current power supply converting circuit comprises:
One first transducer has an input in order to import one first clock;
One second transducer has an input in order to import a second clock;
One first switch has one in order to import the input of a power supply, and one is electrically connected at the control end of the output of this first transducer, and one in order to export the output of this power supply;
One first electric capacity, it has a termination and is subjected to this second clock, is connected the output of this first switch with the other end, and sets up first voltage that is higher than the current potential of this power supply;
One second switch has the output that an input connects this first switch, and one is electrically connected at the control end of the output of this second transducer, and the output of this first voltage of output;
And
One second electric capacity, it has an end and is connected to this first clock, and the other end connects the output of this second switch
One the 3rd transducer has an input in order to import this first clock;
One the 3rd switch has the output that an input connects this second switch, and a control end is in order to being electrically connected at the output of the 3rd transducer, and an output; And
One the 3rd electric capacity, it has an end and connects the earthing potential that this is shared, and the other end is electrically connected at the output of the 3rd switch.
8. direct-current power supply converting circuit as claimed in claim 7, wherein the push-pull type transducer that constituted by a P transistor npn npn and a N transistor npn npn of the 3rd transducer.
9. direct-current power supply converting circuit as claimed in claim 8, wherein the input of this push-pull type transducer is electrically connected at this first clock, and it has the control end that an output is electrically connected at the 3rd switch, one high potential link is electrically connected at the output of the 3rd switch, and an electronegative potential link is electrically connected at an earthing potential of sharing.
10. an apparatus for converting DC power promotes in order to the voltage of making single order, it is characterized in that comprising:
One first conversion equipment is for input one first clock;
One second conversion equipment is for input one second clock;
One first headstock gear, in order to receiving a power supply, and newspaper is controlled passing through of this power supply according to the output signal of this first conversion equipment;
One increasing apparatus in order to according to this second clock and this power supply of being passed through by this first headstock gear, and makes this first headstock gear output one be higher than first voltage of this power supply potential;
One second headstock gear, in order to receiving this first voltage, and according to the output signal of this second conversion equipment, and control passing through of this first voltage;
And
One stored voltage device is in order to store the voltage that this second headstock gear is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100551700A CN100405718C (en) | 2005-03-18 | 2005-03-18 | Switching circuit of d.c. power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100551700A CN100405718C (en) | 2005-03-18 | 2005-03-18 | Switching circuit of d.c. power source |
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| Publication Number | Publication Date |
|---|---|
| CN1835364A true CN1835364A (en) | 2006-09-20 |
| CN100405718C CN100405718C (en) | 2008-07-23 |
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| CNB2005100551700A Expired - Fee Related CN100405718C (en) | 2005-03-18 | 2005-03-18 | Switching circuit of d.c. power source |
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| CN (1) | CN100405718C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249831A (en) * | 2015-06-05 | 2016-12-21 | 李东升 | Power supply conversion circuit capable of being applied to external hard disk |
| CN111053975A (en) * | 2020-01-03 | 2020-04-24 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing device, storage medium, power supply apparatus, and output voltage control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026003A (en) * | 1998-12-18 | 2000-02-15 | Motorola, Inc. | Charge pump circuit and method for generating a bias voltage |
| TW564434B (en) * | 2002-02-22 | 2003-12-01 | Ememory Technology Inc | Charge pump circuit without body effects |
| JP2004357345A (en) * | 2003-05-27 | 2004-12-16 | Nec Kansai Ltd | Dc-dc converter |
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2005
- 2005-03-18 CN CNB2005100551700A patent/CN100405718C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249831A (en) * | 2015-06-05 | 2016-12-21 | 李东升 | Power supply conversion circuit capable of being applied to external hard disk |
| CN106249831B (en) * | 2015-06-05 | 2019-04-19 | 宸定科技股份有限公司 | Power supply conversion circuit capable of being applied to external hard disk |
| CN111053975A (en) * | 2020-01-03 | 2020-04-24 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing device, storage medium, power supply apparatus, and output voltage control method |
| CN111053975B (en) * | 2020-01-03 | 2023-09-29 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing device, storage medium, power supply device, and output voltage control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100405718C (en) | 2008-07-23 |
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