CN102130574B - Multi-output voltage-reduction type conversion device with controllable energy release function - Google Patents
Multi-output voltage-reduction type conversion device with controllable energy release function Download PDFInfo
- Publication number
- CN102130574B CN102130574B CN 201010001142 CN201010001142A CN102130574B CN 102130574 B CN102130574 B CN 102130574B CN 201010001142 CN201010001142 CN 201010001142 CN 201010001142 A CN201010001142 A CN 201010001142A CN 102130574 B CN102130574 B CN 102130574B
- Authority
- CN
- China
- Prior art keywords
- main
- output
- buck type
- buck
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a multi-output voltage-reduction type conversion device with a controllable energy release function. The multi-output voltage-reduction type conversion device comprises a main voltage-reduction type converter and at least one auxiliary voltage-reduction type converter for offering a plurality of output power supplies. The multi-output voltage-reduction type conversion device further consists of an energy release unit and an abnormal voltage signal generation unit. When the multi-output voltage-reduction type conversion device shuts down, the abnormal voltage signal generation unit can generate a control signal for controlling a switching element of the energy release unit to close, so as to release energy stored by the auxiliary voltage-reduction type converter via the energy release unit, and prevent the stored energy from returning to the main voltage-reduction type converter to result in sudden rise of a main output voltage.
Description
Technical field
The present invention is relevant a kind of voltage-dropping type conversion equipment, espespecially a kind of many groups output buck type conversion equipment of tool controllable energy release function.
Background technology
In the computer system application technology, due to the loading demand of computer system, not to only have single group output usually; therefore; power supply can use buck converter that original single group output voltage is reduced to the required voltage value, to realize the requirement of many group outputs for the needs of many group out-put supplies are provided usually.When power supply provides many groups of stable outputs, then coordinate the sequential action that meets the mainboard requirement, computer system is normally operated.But, due to the born characteristic of buck converter, when shutdown, input and output institute role can exchange, making originally to become the transducer of booster type (boost) for the transducer of voltage-dropping type (buck), is the situation that the output voltage inputted bounces up and cause originally.Under this situation, abnormal output voltage will cause the desired sequential of computer system to make a mistake, and makes computer system normally to shut down.
Therefore, how to provide under the use of many group out-put supplies at power supply, design a kind of many groups output buck type conversion equipment of tool controllable energy release function, when this many group output buck type conversion equipment shutdown, can effectively eliminate the problem that these main output voltages of organizing output buck type conversion equipments bounce up more, solution can't normal shutdown situation, this is the technical problem that the present invention will overcome and solve.
Summary of the invention
How to provide under the use of many group out-put supplies at power supply, design a kind of many groups output buck type conversion equipment of tool controllable energy release function, when this many group output buck type conversion equipment shutdown, can effectively eliminate the problem that these main output voltages of organizing output buck type conversion equipments bounce up more, solution can't normal shutdown situation, this is the technical problem that the present invention will overcome and solve.
In order to address the above problem, the invention provides a kind of many groups output buck type conversion equipment of tool controllable energy release function.Many group output buck type conversion equipments comprise main buck converter and secondary buck type transducer, so that many group out-put supplies to be provided.Wherein, main buck converter has main output, so that the main output voltage of relative reference earth terminal to be provided.Secondary buck type transducer is electrically connected main buck converter, and has auxiliary output, so that the auxiliary output voltage of relative reference earth terminal to be provided.Many groups output buck type conversion equipment of tool controllable energy release function more comprises energy releasing unit and abnormal voltage signal generation unit.
The energy releasing unit is electrically connected the auxiliary output of secondary buck type transducer and with reference between earth terminal.The energy releasing unit comprises diode, active load and switch element.The anode tap of diode is electrically connected the auxiliary output of secondary buck type transducer, with the forward guiding path that provides secondary buck type converter energy to discharge.Switch element is connected in series active load, and the end that switch element is connected with active load is electrically connected the cathode terminal of diode, and the other end is electrically connected with reference to earth terminal.
Abnormal voltage signal generation unit is electrically connected the input of main buck converter, to produce control signal.When many groups output buck type conversion equipment shut down, control signal was high levle by the low level transition, and is closed with the control switch element.
With this, control signal control switch element is closed, can be with the stored energy of secondary buck type transducer, and the path that provides via the energy releasing unit discharges, and prevents that stored energy is recycled to main buck converter, and causes main output voltage to bounce up.
In order to address the above problem, the invention provides a kind of many groups output buck type conversion equipment of tool controllable energy release function.Many group output buck type conversion equipments comprise main buck converter and reach secondary buck type transducer at least, so that many group out-put supplies to be provided.Wherein, main buck converter has main output, so that the main output voltage of relative reference earth terminal to be provided.Secondary buck type transducer is electrically connected main buck converter, and has auxiliary output, so that the auxiliary output voltage of relative reference earth terminal to be provided.Many groups output buck type conversion equipment of tool controllable energy release function more comprises energy release-push element and abnormal voltage signal generation unit.
Energy release-push element is electrically connected between the input and main buck converter of secondary buck type transducer.
Abnormal voltage signal generation unit is electrically connected the input of main buck converter, to produce control signal.When many groups output buck type conversion equipment shut down, control signal was low level by the high levle transition, to control energy release-push element open circuit.
With this, control signal is controlled energy release-push element open circuit, can to prevent the stored energy of secondary buck type transducer, be recycled to main buck converter, and cause main output voltage to bounce up.
The present invention has advantages of following:
1, when this many group output buck type conversion equipment shutdown, control this switch element closed, can be with the stored energy of those secondary buck type transducers, discharge via the path that provides, and prevent that stored energy is recycled to this main buck converter, and cause this main output voltage to bounce up, these many group output buck type conversion equipments are shut down normally.
2, when this many group output buck type conversion equipment shutdown, control this energy release-push element open circuit, can be to prevent the stored energy of those secondary buck type transducers, be recycled to this main buck converter, and cause this main output voltage to bounce up, these many group output buck type conversion equipments are shut down normally.
Reach in order further to understand the present invention technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, when getting thus one deeply and concrete understanding, yet accompanying drawing only provide with reference to and explanation use, be not to the present invention's limitr in addition.
Description of drawings
Figure 1A is the first embodiment circuit diagram of many groups output buck type conversion equipment of tool controllable energy release function of the present invention;
Figure 1B is the shutdown sequential charts that should organize output buck type conversion equipments of first embodiment of the invention more;
Fig. 2 A is the second embodiment circuit diagram of many groups output buck type conversion equipment of tool controllable energy release function of the present invention; And
Fig. 2 B is the shutdown sequential charts that should organize output buck type conversion equipments of second embodiment of the invention more.
Description of reference numerals
10 first buck converters
Arm switch on 30 transformers 102 first
40 first voltage detection unit 104 first times arm switches
50 second voltage detecting unit 106 first outputting inductances
70 abnormal voltage signal generation unit 108 first output capacitances
The 80 auxiliary outputs of main buck converter Vb1 first
802 Your Majesty's arm switch 20 second buck converters
Arm switch on 804 main lower arm switches 202 second
204 second times arm switches of 806 main outputting inductances
808 main output capacitance 206 second outputting inductances
810 auxiliary induction 208 second output capacitances
The 812 auxiliary outputs of auxiliary capacitor Vb2 second
Vo1 master's output 90 energy releasing units
902 first diode 904 second diodes
906 active loads
908 switch elements
910 energy release-push elements
The St control signal
Ld11 the first discharge path
Ld12 the second discharge path
Ld13 the 3rd discharge path
Ld14 the 4th discharge path
Ld21 the first discharge path
Ld22 the second discharge path
Ld23 the 3rd discharge path
Ld24 the 4th discharge path
The Vac AC power
Vb primary side voltage
Vs secondary side voltage
Vt1 first threshold voltage
Vt2 Second Threshold voltage
Th holds time
Embodiment
Relevant the technical content and a detailed description coordinate description of drawings as follows:
See also Figure 1A and Figure 1B, be respectively the first embodiment circuit diagram of many groups output buck type conversion equipment of tool controllable energy release function of the present invention and this first embodiment should many group output buck type conversion equipments shutdown sequential charts.Should comprise a main buck converter 80 and at least one secondary buck type transducer by many group output buck type conversion equipments, in order to many group out-put supplies to be provided.In the present embodiment, take two groups of secondary buck type transducers as the example explanation.Also namely, these many group output buck type conversion equipments comprise one first secondary buck type transducer 10 and one second secondary buck type transducer 20.This main buck converter 80 has a main output end vo 1, in order to one relative one main output voltage with reference to earth terminal (not indicating) (not indicating) to be provided.This first secondary buck type transducer 10 is electrically connected this main buck converter 80, and has one first auxiliary output Vb1, wherein, this main output voltage of this main buck converter 80 is higher than this first auxiliary output voltage of this first secondary buck type transducer 10 in order to relative this one first auxiliary output voltage with reference to earth terminal (indicating) to be provided.In addition, this the second secondary buck type transducer 20 is electrically connected this main buck converter 80, and has one second auxiliary output Vb2, in order to one second auxiliary output voltage (indicating) that relatively is somebody's turn to do with reference to earth terminal to be provided, wherein, this main output voltage of this main buck converter 80 is higher than this second auxiliary output voltage of this second secondary buck type transducer 20.
Many groups output buck type conversion equipment of this tool controllable energy release function more comprises an energy releasing unit 90.This energy releasing unit 90 comprises one first diode 902, one second diode 904, an active load 906 and a switch element 908.One anode tap of this first diode 902 (not indicating) is electrically connected this first auxiliary output Vb1 of this first buck converter 10, in order to provide this first buck converter 10 exergonic forward guiding path.One anode tap of this second diode 904 (not indicating) is electrically connected this second auxiliary output Vb2 of this second buck converter 20, in order to provide this second buck converter 20 exergonic forward guiding path.And a cathode terminal of this first diode 902 (not indicating) is electrically connected a cathode terminal (not indicating) of this second diode 904.This active load 906 is connected in series with this switch element 908, and, the end that this switch element is connected with this active load is electrically connected this cathode terminal (i.e. this cathode terminal of this second diode 904) of this first diode 902, and an other end is electrically connected this with reference to earth terminal.
Many groups output buck type conversion equipment of this controllable energy release function more comprises an abnormal voltage signal generation unit 70, and this abnormal voltage signal generation unit 70 produces a control signal St.As shown in Figure 1A, a prime transformer 30 is electrically connected this main buck converter 80, in order to the use as power conversion between primary side input and secondary side output.
A kind of embodiment is: one first voltage detection unit 40 is electrically connected the primary side of this transformer 30, in order to detect the primary side voltage Vb of this transformer 30.This abnormal voltage signal generation unit 70 is electrically connected this first voltage detection unit 40, and receives this primary side voltage Vb, in order to compare (referring to Figure 1B) with a first threshold voltage (threshold voltage) Vt1.When this many group output buck type conversion equipment shutdown, an external ac power source Vac stop supplies power supply, because the electric capacity of system is kept voltage effects, therefore, after keeping the time (hold-up time) Th through one, this primary side voltage Vb reduces gradually.During lower than this first threshold voltage Vt1, this control signal St that this abnormal voltage signal generation unit 70 produces is high levle by the low level transition, and controls this switch element 908 closures (closed) as this primary side voltage Vb.
Another kind of embodiment is: a second voltage detecting unit 50 is electrically connected the secondary side of this transformer 30, in order to detect the secondary side voltage Vs of this transformer 30.This abnormal voltage signal generation unit 70 is electrically connected this second voltage detecting unit 50, and receives this secondary side voltage Vs, in order to compare (referring to Figure 1B) with a Second Threshold voltage (threshold voltage) Vt2.When this many group output buck type conversion equipment shutdown, this external ac power source Vac stop supplies power supply, because the electric capacity of system is kept voltage effects, therefore, after keeping the time (hold-up time) Th through one, this secondary side voltage Vs reduces gradually.During lower than this Second Threshold voltage Vt2, this control signal St that this abnormal voltage signal generation unit 70 produces is high levle by the low level transition, and controls this switch element 908 closures (closed) as this secondary side voltage Vs.
Yet therefore different topology (topology) framework because switched-mode power supply develops, is not limited with above-mentioned two kinds of embodiment in order to the circuit as voltage detecting.
As shown in Figure 1A, this main buck converter 80 mainly comprises Your Majesty's arm switch 802, a main lower arm switch 804, a main outputting inductance 806, a main output capacitance 808, an auxiliary induction 810 and an auxiliary capacitor 812.This first buck converter 10 mainly comprises arm switch 102 on one first, one first time arm switch 104, one first outputting inductance 106 and one first output capacitance 108.This second buck converter 20 mainly comprises arm switch 202 on one second, one second time arm switch 204, one second outputting inductance 206 and one second output capacitance 208.
Therefore, when this many group output buck type conversion equipment shutdown, energy for this first output capacitance 108 that is stored in this first buck converter 10, can stored energy be discharged via one first discharge path Ld11, and avoid the stored energy of this first output capacitance 108, be recycled to this main output end vo 1 via one the 3rd discharge path Ld13.In addition, the energy that this first secondary buck type transducer 10 is stored, the path that also can provide by these the first secondary buck type transducer 10 external service loads simultaneously (not indicating) discharges.It is worth mentioning that, this first discharge path Ld11 forms via this first output capacitance 108, this first diode 902, this active load 906 and this switch element 908.And, the 3rd discharge path Ld13 via this first output capacitance 108, this first outputting inductance 106, this on first arm switch 102, this auxiliary induction 810, this main outputting inductance 806 and this main output capacitance 808 form.
Similarly, when this many group output buck type conversion equipment shutdown, energy for this second output capacitance 208 that is stored in this second buck converter 20, can stored energy be discharged via one second discharge path Ld12, and avoid the stored energy of this second output capacitance 208, be recycled to this main output end vo 1 via one the 4th discharge path Ld14.In addition, the stored energy of this second secondary buck type transducer 20 path that also can provide by these the second secondary buck type transducer 20 external service loads simultaneously (indicating) discharges.It is worth mentioning that, this second discharge path Ld12 forms via this second output capacitance 208, this second diode 904, this active load 906 and this switch element 908.And, the 4th discharge path Ld14 via this second output capacitance 208, this second outputting inductance 206, this on second arm switch 202, this auxiliary induction 810, this main outputting inductance 806 and this main output capacitance 808 form.
The electric connection position of this active load 906 and this switch element 908 is not limited to above-mentioned the exposure; as long as can provide energy to discharge; and prevent that energy is recycled to the electric connection position of this main buck converter 80; even adopt a plurality of these active loads 906 and this switch element 908, all can be contained in protection scope of the present invention.
In brief, when this many group output buck type conversion equipment shutdown, this control signal St that this abnormal voltage signal generation unit 70 produces, be high levle by the low level transition, and control this switch element 908 closures, can be with this first secondary buck type transducer 10 and the stored energy of this second secondary buck type transducer 20, the path that provides via this energy releasing unit 90 discharges, and prevent that stored energy is recycled to this main buck converter 80, and cause this main output voltage to bounce up.
See also Fig. 2 A and Fig. 2 B, be respectively the second embodiment circuit diagram of many groups output buck type conversion equipment of tool controllable energy release function of the present invention and this second embodiment should many group output buck type conversion equipments shutdown sequential charts.Should comprise a main buck converter 80 and at least one secondary buck type transducer by many group output buck type conversion equipments, in order to many group out-put supplies to be provided.In the present embodiment, take two groups of secondary buck type transducers as the example explanation.That is, these many group output buck type conversion equipments comprise one first secondary buck type transducer 10 and one second secondary buck type transducer 20.This main buck converter 80 has a main output end vo 1, in order to one relative one main output voltage with reference to earth terminal (not indicating) (not indicating) to be provided.This first secondary buck type transducer 10 is electrically connected this main buck converter 80, and has one first auxiliary output Vb1, wherein, this main output voltage of this main buck converter 80 is higher than this first auxiliary output voltage of this first secondary buck type transducer 10 in order to relative this one first auxiliary output voltage with reference to earth terminal (indicating) to be provided.In addition, this the second secondary buck type transducer 20 is electrically connected this main buck converter 80, and has one second auxiliary output Vb2, in order to one second auxiliary output voltage (indicating) that relatively is somebody's turn to do with reference to earth terminal to be provided, wherein, this main output voltage of this main buck converter 80 is higher than this second auxiliary output voltage of this second secondary buck type transducer 20.
Many groups output buck type conversion equipment of this tool controllable energy release function more comprises an energy release-push element 910.This energy release-push element 910 is electrically connected between an input and this main buck converter 80 of this first secondary buck type transducer 10.
Many groups output buck type conversion equipment of this tool controllable energy release function more comprises an abnormal voltage signal generation unit 70, and this abnormal voltage signal generation unit 70 produces a control signal St.As shown in Fig. 2 A, a prime transformer 30 is electrically connected this main buck converter 80, in order to the use as power conversion between primary side input and secondary side output.
A kind of embodiment is: one first voltage detection unit 40 is electrically connected the primary side of this transformer 30, in order to detect the primary side voltage Vb of this transformer 30.This abnormal voltage signal generation unit 70 is electrically connected this first voltage detection unit 40, and receives this primary side voltage Vb voltage, in order to compare (referring to Fig. 2 B) with a first threshold voltage (threshold voltage) Vt1.When this many group output buck type conversion equipment shutdown, one external ac power source Vac stop supplies power supply is because the electric capacity of system is kept voltage effects, therefore, after keeping the time (hold-up time) Th through one, this primary side voltage Vb voltage reduces gradually.During lower than this first threshold voltage Vt1, this control signal St that this abnormal voltage signal generation unit 70 produces is low level by the high levle transition when this primary side voltage Vb voltage, and controls this energy release-push element 910 open circuits (open).
Another kind of embodiment is: a second voltage detecting unit 50 is electrically connected the secondary side of this transformer 30, in order to detect the secondary side voltage Vs of this transformer 30.This abnormal voltage signal generation unit 70 is electrically connected this second voltage detecting unit 50, and receives this secondary side voltage Vs voltage, in order to compare (referring to Fig. 2 B) with a Second Threshold voltage (threshold voltage) Vt2.When this many group output buck type conversion equipment shutdown, this external ac power source Vac stop supplies power supply is because the electric capacity of system is kept voltage effects, therefore, after keeping the time (hold-up time) Th through one, this secondary side voltage Vs voltage reduces gradually.During lower than this Second Threshold voltage Vt2, this control signal St that this abnormal voltage signal generation unit 70 produces is low level by the high levle transition when this secondary side voltage Vs voltage, and controls this energy release-push element 910 open circuits (open).
Yet therefore different topology (topology) framework because switched-mode power supply develops, is not limited with above-mentioned two kinds of embodiment in order to the circuit as voltage detecting.
As shown in Fig. 2 A, this main buck converter 80 mainly comprises Your Majesty's arm switch 802, a main lower arm switch 804, a main outputting inductance 806, a main output capacitance 808, an auxiliary induction 810 and an auxiliary capacitor 812.This first buck converter 10 mainly comprises arm switch 102 on one first, one first time arm switch 104, one first outputting inductance 106 and one first output capacitance 108.This second buck converter 20 mainly comprises arm switch 202 on one second, one second time arm switch 204, one second outputting inductance 206 and one second output capacitance 208.
Therefore, when this many group output buck type conversion equipment shutdown, energy for this first output capacitance 108 that is stored in this first buck converter 10, can stored energy be discharged via one first discharge path Ld21, and avoid the stored energy of this first output capacitance 108, be recycled to this main output end vo 1 via one the 3rd discharge path Ld23.It is worth mentioning that, this first discharge path Ld21 forms via this first output capacitance 108, this first outputting inductance 106 and this first time arm switch 104.And, the 3rd discharge path Ld23 via this first output capacitance 108, this first outputting inductance 106, this on first arm switch 102, this auxiliary induction 810, this energy release-push element 910, this main outputting inductance 806 and this main output capacitance 808 form.
Similarly, when this many group output buck type conversion equipment shutdown, energy for this second output capacitance 208 that is stored in this second buck converter 20, can stored energy be discharged via one second discharge path Ld22, and avoid the stored energy of this second output capacitance 208, be recycled to this main output end vo 1 via one the 4th discharge path Ld24.It is worth mentioning that, this second discharge path Ld22 forms via this second output capacitance 208, this second outputting inductance 206 and this second time arm switch 204.And, the 4th discharge path Ld24 via this second output capacitance 208, this second outputting inductance 206, this on second arm switch 202, this energy release-push element 910, this auxiliary induction 810, this main outputting inductance 806 and this main output capacitance 808 form.
The electric connection position of this energy release-push element 910 is not limited to above-mentioned the exposure; as long as can provide the blocking-up energy to be recycled to the electric connection position of this main buck converter 80; even adopt a plurality of these energy release-push elements 910, all can be contained in protection scope of the present invention.
In brief, when this many group output buck type conversion equipment shutdown, this control signal St that this abnormal voltage signal generation unit 70 produces, be low level by the high levle transition, open a way and control this energy release-push element 910, can to prevent this first secondary buck type transducer 10 and the stored energy of this second secondary buck type transducer 20, be recycled to this main buck converter 80, and cause this main output voltage to bounce up.
Except, the present invention more can be the voltage-dropping type conversion equipment that more groups of auxiliary outputs are provided, and the energy discharge paths of the auxiliary output of groups many according to those, this above-mentioned energy releasing unit 90 or the electric connection position of this energy release-push element 910 and the quantity of employing can be done moderately according to actual system and adjust.
In sum, the present invention has advantages of following:
1, when this many group output buck type conversion equipment shutdown, control this switch element closed, can be with the stored energy of those secondary buck type transducers, discharge via the path that provides, and prevent that stored energy is recycled to this main buck converter, and cause this main output voltage to bounce up, these many group output buck type conversion equipments are shut down normally.
2, when this many group output buck type conversion equipment shutdown, control this energy release-push element open circuit, can be to prevent the stored energy of those secondary buck type transducers, be recycled to this main buck converter, and cause this main output voltage to bounce up, these many group output buck type conversion equipments are shut down normally.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those familiar with ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. many groups output buck type conversion equipment of a tool controllable energy release function, comprise a main buck converter and at least one secondary buck type transducer, so that many group out-put supplies to be provided; Wherein, this main buck converter has a main output, so that a main output voltage of relative reference earth terminal to be provided; This secondary buck type transducer is electrically connected this main buck converter, and has an auxiliary output, so that an auxiliary output voltage of relative reference earth terminal to be provided; Should more comprise by many group output buck type conversion equipments:
One energy releasing unit, be electrically connected this secondary buck type transducer should auxiliary output and with reference between earth terminal, this energy releasing unit comprises:
One diode, an anode tap of this diode are electrically connected the auxiliary output of being somebody's turn to do of this secondary buck type transducer, with the forward guiding path that provides this secondary buck type converter energy to discharge;
One active load; And
One switch element, an end of this switch element connects an end of this active load, and the other end of this switch element is electrically connected with reference to earth terminal, and the other end of this active load is electrically connected a cathode terminal of this diode; And
One abnormal voltage signal generation unit is electrically connected an input of this main buck converter, to produce a control signal; When this many group output buck type conversion equipment shutdown, this control signal is high levle by the low level transition, and is closed to control this switch element;
With this, it is closed that this control signal is controlled this switch element, can with the stored energy of this secondary buck type transducer, discharge via this energy releasing unit, and prevent that stored energy is recycled to this main buck converter, and cause this main output voltage to bounce up.
2. according to claim 1 many groups output buck type conversion equipment of tool controllable energy release function, wherein this main output voltage of this main buck converter is higher than this auxiliary output voltage of this secondary buck type transducer.
3. according to claim 1 many groups output buck type conversion equipment of tool controllable energy release function, wherein this abnormal voltage signal generation unit by this input terminal voltage of this main buck converter relatively lower than a voltage threshold, be high levle and trigger this control signal by the low level transition, closed to control this switch element.
4. according to claim 1 many groups output buck type conversion equipment of tool controllable energy release function, wherein the stored energy of this secondary buck type transducer can discharge by the path that the external service load of this secondary buck type transducer provides.
5. many groups output buck type conversion equipment of a tool controllable energy release function, comprise a main buck converter and at least one secondary buck type transducer, so that many group out-put supplies to be provided; Wherein, this main buck converter has a main output, so that a main output voltage of relative reference earth terminal to be provided; This secondary buck type transducer is electrically connected this main buck converter, and has an auxiliary output, so that an auxiliary output voltage of relative reference earth terminal to be provided; Should more comprise by many group output buck type conversion equipments:
One energy release-push element is electrically connected an input of this secondary buck type transducer and an input of this main buck converter simultaneously; And
One abnormal voltage signal generation unit is electrically connected this input of this main buck converter, to produce a control signal; When this many group output buck type conversion equipment shutdown, this control signal is low level by the high levle transition, to control this energy release-push element open circuit;
With this, this control signal is controlled this energy release-push element open circuit, can to prevent the stored energy of this secondary buck type transducer, be recycled to this main buck converter, and cause this main output voltage to bounce up.
6. according to claim 5 many groups output buck type conversion equipment of tool controllable energy release function, wherein this main output voltage of this main buck converter is higher than this auxiliary output voltage of this secondary buck type transducer.
7. according to claim 5 many groups output buck type conversion equipment of tool controllable energy release function, wherein this abnormal voltage signal generation unit by this input terminal voltage of this main buck converter relatively lower than a voltage threshold, be low level and trigger this control signal by the high levle transition, to control this energy release-push element open circuit.
8. according to claim 5 many groups output buck type conversion equipment of tool controllable energy release function, wherein the stored energy of this secondary buck type transducer can discharge by the path that the external service load of this secondary buck type transducer provides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010001142 CN102130574B (en) | 2010-01-13 | 2010-01-13 | Multi-output voltage-reduction type conversion device with controllable energy release function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010001142 CN102130574B (en) | 2010-01-13 | 2010-01-13 | Multi-output voltage-reduction type conversion device with controllable energy release function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102130574A CN102130574A (en) | 2011-07-20 |
| CN102130574B true CN102130574B (en) | 2013-06-19 |
Family
ID=44268501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010001142 Expired - Fee Related CN102130574B (en) | 2010-01-13 | 2010-01-13 | Multi-output voltage-reduction type conversion device with controllable energy release function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102130574B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579720B (en) * | 2018-06-08 | 2022-08-30 | 台达电子工业股份有限公司 | Power supply monitor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930677A (en) * | 2004-03-23 | 2007-03-14 | 罗姆股份有限公司 | Semiconductor integrated circuit device and switching power source device using the same |
| US7301312B2 (en) * | 2003-10-08 | 2007-11-27 | Rohm Co., Ltd. | Switching power supply unit for generating an output voltage stepped up from an input voltage |
| CN101404452A (en) * | 2008-10-23 | 2009-04-08 | 崇贸科技股份有限公司 | Control circuit of electric power converter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4651832B2 (en) * | 2001-03-05 | 2011-03-16 | 富士通セミコンダクター株式会社 | Overvoltage protection device for power system |
| JP4691404B2 (en) * | 2005-06-24 | 2011-06-01 | 三洋電機株式会社 | Switching control circuit, self-excited DC-DC converter |
-
2010
- 2010-01-13 CN CN 201010001142 patent/CN102130574B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7301312B2 (en) * | 2003-10-08 | 2007-11-27 | Rohm Co., Ltd. | Switching power supply unit for generating an output voltage stepped up from an input voltage |
| CN1930677A (en) * | 2004-03-23 | 2007-03-14 | 罗姆股份有限公司 | Semiconductor integrated circuit device and switching power source device using the same |
| CN101404452A (en) * | 2008-10-23 | 2009-04-08 | 崇贸科技股份有限公司 | Control circuit of electric power converter |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-262544A 2002.09.13 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102130574A (en) | 2011-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6369461B1 (en) | High efficiency power conditioner employing low voltage DC bus and buck and boost converters | |
| US10056780B2 (en) | Power supply system, uninterruptible power supply system, and power supply method | |
| US8363438B2 (en) | Multi-output buck converting apparatus with controllable energy-releasing function | |
| WO2008040225A1 (en) | Electric vehicle charging system | |
| EP3859959A1 (en) | Lightning surge protection circuit, method and system, and storage medium and electronic apparatus | |
| US9564797B2 (en) | Indirect matrix converter | |
| CN103929048B (en) | A kind of zero cross detection circuit of Switching Power Supply | |
| CN108649792B (en) | Boost circuit, switching power supply, power supply system and control method | |
| US20230341459A1 (en) | Power-loss delay circuit and detection control circuit thereof | |
| CN104426236A (en) | Power supply conversion system and control method thereof | |
| CN102520276A (en) | Integrated testing circuit for modular multi-level converter valve and control method of integrated testing circuit | |
| CN102130574B (en) | Multi-output voltage-reduction type conversion device with controllable energy release function | |
| US8299769B2 (en) | Multi-output buck converting apparatus with shutdown protection | |
| CN102270858A (en) | Charging device | |
| CN109980709B (en) | Charging power supply system with low standby power consumption and control method thereof | |
| CN202421352U (en) | Integrated testing circuit for modular multi-level converter valve | |
| US9960636B2 (en) | Power supply system and direct-current converter thereof | |
| CN102130573B (en) | Multi-group output voltage-reduction conversion device having power-off protection function | |
| US10992152B2 (en) | Uninterruptible power supply and method of operating the same | |
| KR101578339B1 (en) | Hybrid energy storage apparatus | |
| KR101043402B1 (en) | Improved bi-directional flyback converter | |
| CN202696464U (en) | High-efficiency direct current/direct current (DC/DC) converter system | |
| KR20160062834A (en) | Apparatus and method for controlling power transformer with light load | |
| TWI755647B (en) | Fuel cell system and control method thereof | |
| TWI808871B (en) | Trip circuit of circuit breaker using power converter and rechargeable battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20160113 |