CN104166449A - Multiple power source parallel operation device and method - Google Patents
Multiple power source parallel operation device and method Download PDFInfo
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- CN104166449A CN104166449A CN201410307207.3A CN201410307207A CN104166449A CN 104166449 A CN104166449 A CN 104166449A CN 201410307207 A CN201410307207 A CN 201410307207A CN 104166449 A CN104166449 A CN 104166449A
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Abstract
The invention discloses a multiple power source parallel operation device and method. The device comprises an input power source, a first power source switching module and a second power source switching module, wherein the input end of the first power source switching module and the input end of the second power source switching module are both connected with the input power source, the output end of the first power source switching module and the output end of the second power source switching module are connected with an output voltage module through a first diode and a second diode, detection pins are connected with the output voltage module through a first resistor and a second resistor, the output end of the first power source switching module and the output end of the second power source switching module are connected with the positive pole of the first diode and the positive pole of the second diode respectively, and the negative pole of the first diode and the negative pole of the second diode are connected with the output voltage module; the hardware circuit of the first power source switching module and the hardware circuit of the second power source switching module are identical, and the first resistor and the second resistor are used for enabling a first output voltage output by the first power source switching module to be identical to a second output voltage output by the second power source switching module. According to the multiple power source parallel operation device and method, when parallel output is conducted by two or more power sources, equal-voltage and equal-current output between the multiple power source modules can be achieved by adopting isolation diodes, selecting a feedback point and setting a reasonable resistance value, and then power source design difficulty is reduced and power source cost is reduced.
Description
Technical field
The present invention relates to computer motherboard Power Management Design field, be specifically related to a kind of device and method of many power supplys parallel running.
Background technology
Along with the lifting of integrated circuit production technology, integrated more transistor in unit area, when chip functions is powerful, power consumption is also rising, also more and more higher to the power requirement of input.The solution of traditional DC-DC (DC-DC) is: when electric current becomes large, during Power Management Design, just from the single-phase two-phase that is upgraded to, when demand increases again, power source design just becomes three-phase, four phases, by that analogy.
The consequence of doing is like this that the cost of Power Management Design can be very high, and it is 6 times of a single phase poaer supply control chip that the price of six phase power supply control chips runs far deeper than; Second shortcoming is the many a kind of materials in BOM (Bill of Material (BOM), Bill of Material) the inside, increases the risk of maintenance and procurement cycle.And if simply directly two or more power supply parallel connections are provided to large electric current, can produce voltage inequality, current unevenness such as flows, pours in down a chimney at the problem.
Summary of the invention
Technical matters to be solved by this invention is, the invention provides a kind of device and method of many power supplys parallel running, and the method can realize between multi-power module and all pressing, current-sharing output, and reduces Power Management Design cost.
In order to address the above problem, the invention provides a kind of device of many power supplys parallel running, this device comprises:
Comprise: input power, first, second power transfer module, input end is connected with described input power respectively; It is characterized in that, also comprise:
First, second diode, first, second resistance, output voltage module;
The output terminal of the first power transfer module is connected with output voltage module by the first diode, and detecting (SENSE) pin is connected with output voltage module by the first resistance; The output terminal of second source modular converter is connected with output voltage module by the second diode, and detecting (SENSE) pin is connected with output voltage module by the second resistance;
Wherein, the output terminal of each power transfer module connects with the positive pole of be connected diode, and the negative pole of each diode is connected with output voltage module,
Described the first power transfer module is identical with the hardware circuit of second source modular converter;
Described first, second resistance, for equating the first output voltage of described the first power transfer module output and the second output voltage of second source modular converter output.
Preferably, described device also has following characteristics:
Described input power is the first input voltage module,
The first input voltage module, for being respectively described first, second power transfer module power supply.
Preferably, described device also has following characteristics:
Also comprise: soft-start circuit;
Described in the first input voltage module is respectively, first, second power transfer module power supply refers to by being respectively first, second power transfer module after soft-start circuit and powers.
Preferably, described device also has following characteristics:
The detecting of first, second power transfer module (SENSE) pin is used for detecting described first, second output voltage.
Preferably, described device also has following characteristics:
The resistance of described first, second resistance is 5～10 ohm.
In order to address the above problem, the present invention also provides a kind of method of many power supplys parallel running, is applied in said apparatus, and the method comprises:
By regulating respectively first, second resistance, the first output voltage of the first power transfer module output and the second output voltage of second source modular converter output are equated.
Preferably, described method also comprises:
By same input voltage module, being respectively first, second power transfer module powers.
Preferably, described method also comprises:
By same input voltage module, being respectively the power supply of the first power transfer module, second source modular converter comprises:
Described input voltage module is respectively first, second power transfer module power supply after soft-start circuit.
Preferably, described method also comprises:
By detecting (SENSE) pin of first, second power transfer module, described first, second output voltage of detecting.
Preferably, described method also comprises:
The resistance of described first, second resistance is 5～10 ohm.
To sum up, the device and method of above-mentioned many power supplys parallel running, compared with prior art, its beneficial effect is: when the output in parallel of a kind of two or more power supplys, by adopting, isolating diode, feedback point are selected, reasonably resistance value arranges, all pressure, current-sharing output between multi-power module be can realize, thereby Power Management Design difficulty, reduction power supply cost reduced.
Accompanying drawing explanation
Figure 1 shows that many power supplys of embodiment of the present invention parallel running and realize all device schematic diagram of pressure, current-sharing of output.
Embodiment
Below with reference to drawings and Examples, describe embodiments of the present invention in detail, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.It should be noted that, if do not conflicted, each feature in the embodiment of the present invention and embodiment mutually all within protection scope of the present invention.
Embodiments of the invention provide a kind of device of many power supplys parallel running, and as shown in Figure 1, this device comprises:
Input power, first, second power transfer module, input end is connected with described input power respectively; It is characterized in that, also comprise:
First, second diode, first, second resistance, output voltage module;
The output terminal of the first power transfer module is connected with output voltage module by the first diode, and detecting (SENSE) pin is connected with output voltage module by the first resistance; The output terminal of second source modular converter is connected with output voltage module by the second diode, and detecting (SENSE) pin is connected with output voltage module by the second resistance;
Wherein, the output terminal of each power transfer module connects with the positive pole of be connected diode, and the negative pole of each diode is connected with output voltage module,
Described the first power transfer module is identical with the hardware circuit of second source modular converter;
Described first, second resistance, for equating the first output voltage of described the first power transfer module output and the second output voltage of second source modular converter output.
Alternatively, described input power is the first input voltage module,
The first input voltage module, for being respectively described first, second power transfer module power supply.
Alternatively, also comprise: soft-start circuit;
Described in the first input voltage module is respectively, first, second power transfer module power supply refers to by being respectively first, second power transfer module after soft-start circuit and powers.
Alternatively, the detecting of first, second power transfer module (SENSE) pin is used for detecting described first, second output voltage.
Alternatively, the resistance of described first, second resistance is 5～10 ohm.
Based on said apparatus, the embodiment of the present invention also provides a kind of many power supplys parallel running method, in application said apparatus; Described method comprises:
By regulating respectively first, second resistance, the first output voltage of the first power transfer module output and the second output voltage of second source modular converter output are equated.
Alternatively, also comprise: by same input voltage module, be respectively first, second power transfer module and power.
Alternatively, by same input voltage module, being respectively the power supply of the first power transfer module, second source modular converter comprises:
Described input voltage module is respectively first, second power transfer module power supply after soft-start circuit.
Alternatively, also comprise:
By detecting (SENSE) pin of first, second power transfer module, described first, second output voltage of detecting.
Alternatively, also comprise:
The resistance of described first, second resistance is 5～10 ohm.
According to said method and device, known at two and during with the in parallel output of power source, by employing isolating diode, feedback point selection, rational resistance value, arrange, can realize all pressure, current-sharing output between multi-power module, thereby reduce Power Management Design difficulty, reduction power supply cost.
For the ease of better understanding said apparatus of the present invention and method, with specific embodiment, illustrate below.
(1), the input end of first, second power transfer module is connected in parallel;
(2), " the first input voltage " through soft-start circuit output " the second input voltage ", " the second input voltage " gives first, second power transfer module power supply;
The effect of soft-start circuit is to prevent surge current, protection rear module;
(3), for preventing, pour in down a chimney, the output terminal of two power modules is by " the first diode " and " the second diode " and be linked together;
(4), output voltage module is connected to respectively SENSE (detecting) pin of first, second power transfer module by first, second resistance, be used for adjusting the output voltage of first, second power transfer module;
(5), while supposing " the first resistance "=" the second resistance "=0 ohm, first, second power transfer module adjust first, second output voltage with the output voltage that guarantees output voltage module for reaching required level;
Now the voltage of " the first output voltage ", " the second output voltage " is a little more than actual " output voltage of output voltage module ", and due to the otherness of device, " the first output voltage " and " the second output voltage " can not definitely equate;
(6), suppose that " the first output voltage " is higher than " the second output voltage ", by the output voltage after the first diode also a little more than by the output voltage after the second diode, therefore " output voltage of output voltage module " depends on the output voltage of " the first diode ";
If do not adjust resistance size, " the second resistance " draws back " the first diode " output voltage at the SENSE end of second source modular converter, after the settings of the voltage that second source modular converter is found load end higher than oneself, close output, cause in two parallel modules, only there is the first power transfer module work;
So the resistance value of first and second resistance is increased to 5-10 ohm, by the dividing potential drop of first, second resistance, avoid the difference of device itself, thereby realize the mean allocation of two power transfer module to load end level, to realize real parallel running.
From above-described embodiment, the device and method of many power supplys parallel running that the present invention proposes, includes but not limited to following advantage:
1, general common many power supplys output circuit in parallel does not have reverse-filling measure, and when one group of power transfer module starts slowly or breaks down, the electricity of other power modules can be filled with into and be caused module damage, and the present invention does not exist this problem;
2, modules can normally be exported by feedback resistance separately, does not exist because the module that the otherness of device has has output, and some modules are the situation of output no, thereby realize, output is all pressed, the function of current-sharing;
3, owing to adopting identical supply module can realize High-current output, than leggy power supply control chip scheme, there is good cost advantage, reduce Power Management Design difficulty.
Although the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technician in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1. a device for the parallel running of power supply more than, comprising: input power, and first, second power transfer module, input end is connected with described input power respectively; It is characterized in that, also comprise:
First, second diode, first, second resistance, output voltage module;
The output terminal of the first power transfer module is connected with output voltage module by the first diode, and detecting (SENSE) pin is connected with output voltage module by the first resistance; The output terminal of second source modular converter is connected with output voltage module by the second diode, and detecting (SENSE) pin is connected with output voltage module by the second resistance;
Wherein, the output terminal of each power transfer module connects with the positive pole of be connected diode, and the negative pole of each diode is connected with output voltage module,
Described the first power transfer module is identical with the hardware circuit of second source modular converter;
Described first, second resistance, for equating the first output voltage of described the first power transfer module output and the second output voltage of second source modular converter output.
2. device as claimed in claim 1, is characterized in that, described input power is the first input voltage module,
The first input voltage module, for being respectively described first, second power transfer module power supply.
3. device as claimed in claim 2, is characterized in that, also comprises: soft-start circuit;
Described in the first input voltage module is respectively, first, second power transfer module power supply refers to by being respectively first, second power transfer module after soft-start circuit and powers.
4. device as claimed in claim 1, is characterized in that,
The detecting of first, second power transfer module (SENSE) pin is used for detecting described first, second output voltage.
5. device as claimed in claim 1, is characterized in that,
The resistance of described first, second resistance is 5～10 ohm.
6. the parallel running of power supply a more than method, is applied in the device as described in any one in claim 1-5; It is characterized in that, described method comprises:
By regulating respectively first, second resistance, the first output voltage of the first power transfer module output and the second output voltage of second source modular converter output are equated.
7. method as claimed in claim 6, is characterized in that, also comprises: by same input voltage module, be respectively first, second power transfer module and power.
8. method as claimed in claim 7, is characterized in that, is respectively the power supply of the first power transfer module, second source modular converter comprises by same input voltage module:
Described input voltage module is respectively first, second power transfer module power supply after soft-start circuit.
9. method as claimed in claim 6, is characterized in that, also comprises:
By detecting (SENSE) pin of first, second power transfer module, described first, second output voltage of detecting.
10. method as claimed in claim 6, is characterized in that, also comprises:
The resistance of described first, second resistance is 5～10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410307207.3A CN104166449A (en) | 2014-06-30 | 2014-06-30 | Multiple power source parallel operation device and method |
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| CN201410307207.3A CN104166449A (en) | 2014-06-30 | 2014-06-30 | Multiple power source parallel operation device and method |
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| CN104166449A true CN104166449A (en) | 2014-11-26 |
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| CN201410307207.3A Pending CN104166449A (en) | 2014-06-30 | 2014-06-30 | Multiple power source parallel operation device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045363A (en) * | 2015-06-29 | 2015-11-11 | 浪潮电子信息产业股份有限公司 | Method for solving problem of multiple VR output current flow-backwards |
| CN108306490A (en) * | 2017-01-12 | 2018-07-20 | 中兴通讯股份有限公司 | Power supply output control circuit and method |
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| US5319536A (en) * | 1991-12-17 | 1994-06-07 | International Business Machines Corporation | Power system for parallel operation of AC/DC convertrs |
| US5428523A (en) * | 1993-03-30 | 1995-06-27 | Ro Associates | Current sharing signal coupling/decoupling circuit for power converter systems |
| CN101753048A (en) * | 2008-12-19 | 2010-06-23 | 方大集团股份有限公司 | Control power supply for subway safety door system |
| CN102222905A (en) * | 2011-06-20 | 2011-10-19 | 浙江工业大学 | Plug-in multi-passage current sharing interface circuit |
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2014
- 2014-06-30 CN CN201410307207.3A patent/CN104166449A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319536A (en) * | 1991-12-17 | 1994-06-07 | International Business Machines Corporation | Power system for parallel operation of AC/DC convertrs |
| US5428523A (en) * | 1993-03-30 | 1995-06-27 | Ro Associates | Current sharing signal coupling/decoupling circuit for power converter systems |
| CN101753048A (en) * | 2008-12-19 | 2010-06-23 | 方大集团股份有限公司 | Control power supply for subway safety door system |
| CN102222905A (en) * | 2011-06-20 | 2011-10-19 | 浙江工业大学 | Plug-in multi-passage current sharing interface circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045363A (en) * | 2015-06-29 | 2015-11-11 | 浪潮电子信息产业股份有限公司 | Method for solving problem of multiple VR output current flow-backwards |
| CN108306490A (en) * | 2017-01-12 | 2018-07-20 | 中兴通讯股份有限公司 | Power supply output control circuit and method |
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Application publication date: 20141126 |
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