CN102455769A - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN102455769A CN102455769A CN2010105129078A CN201010512907A CN102455769A CN 102455769 A CN102455769 A CN 102455769A CN 2010105129078 A CN2010105129078 A CN 2010105129078A CN 201010512907 A CN201010512907 A CN 201010512907A CN 102455769 A CN102455769 A CN 102455769A
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- unit
- power supply
- supply unit
- pwm
- current
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Abstract
The invention discloses a power supply device which is used for supplying power to an electronic device. The power supply device comprises a power supply unit, a PWM (Pulse Width Modulation) unit, a sampling circuit and a display module, wherein the display module, the PWM unit, the sampling circuit and the power supply unit are sequentially and electrically connected, the PWM unit is provided with a plurality of current detection pins connected to the sampling circuit, and the PWM unit is used for detecting current flowing through the sampling circuit through the current detection pins so as to measure the current output by the power supply unit and the measured current value is transmitted to the display module so that the display module displays the measured current value.
Description
Technical field
The present invention relates to a kind of supply unit, relate in particular to a kind of supply unit of measuring the supply current size.
Background technology
The power supply of multiple electronic installation such as computing machine normally carries out civil power after step-down is handled the electronic installation internal load to be supplied power through a buck-converter; The user generally need utilize survey instrument just can record power supply to the size of current that load provides, and is not easy to the user and monitors the electronic device power power supply situation at any time.Especially now the power consumption of new computer modules such as processor is increasing, needs stronger working current, so the use of polyphase current is increasingly extensive.Compare with the single phase power supply electric current, the monitoring of polyphase current is difficulty more.
Summary of the invention
In view of above content, be necessary to provide a kind of supply unit that can in time detect supply unit output current size.
A kind of supply unit; In order to electronic installation is supplied power; This supply unit comprises power supply unit, PWM unit, sample circuit and demonstration module; Show that module, PWM unit, sample circuit and power supply unit electrically connect successively, the PWM unit has some current detecting pins that are connected to sample circuit, and the size of current of power supply unit output is measured through the electric current that the current detecting pin detects the sample circuit of flowing through in the PWM unit; And the current value that records is sent to the demonstration module, with current value through showing that module displays goes out to record.
Above-mentioned supply unit does not need extra measuring equipment can in time record the electric current of this supply unit output, and comes out through the demonstration module displays, so that the power supply situation of the timely monitoring power supply device of user.
Description of drawings
Combine embodiment that the present invention is done further description with reference to the accompanying drawings.
Fig. 1 is the functional block diagram of the supply unit of preferred embodiments of the present invention.
The main element symbol description
The first phase power supply 11
The second phase power supply 13
PWM unit 30
Control of Voltage pin Gate
Current detecting pin Isen
Electric current output pin Iout
Show module 70
First display unit 71
The 3rd display unit 75
Embodiment
Please with reference to Fig. 1; Preferred embodiments of the present invention provides a kind of supply unit 100; It comprises power supply unit 10, PWM (Pulse Width Modulation, pulse-length modulation) unit 30, sample circuit 50 and shows module 70, the voltage of PWM unit 30 control power supply units, 10 outputs; And cooperate sample circuit 50 to detect the current parameters of power supply unit 10 outputs, demonstrate the current parameters that records through demonstration module 70 then.
Show that module 70 is electrically connected to PWM unit 30, in order to the current value that shows that PWM unit 30 records.In embodiment of the present invention; This demonstration module 70 comprises first display unit 71, second display unit 73 and the 3rd display unit 75; And first display unit 71 is connected to the first phase power supply, 11 current corresponding output pin Iout; Second display unit 73 is connected to the second phase power supply, 13 current corresponding output pin Iout, in order to show the first phase power supply 11 record and second electric current exported of power supply 13 mutually respectively.The 3rd display unit 75 is in order to show this first phase power supply 11 and the second electric current summation of power supply 13 output mutually, the i.e. electric current of power supply unit 10 outputs.
In embodiment of the present invention; This supply unit 100 also comprises an AD conversion unit 90; Show that module 70 is electrically connected to the electric current output pin Iout of PWM unit 30 through AD conversion unit 90; Analog signal conversion in order to PWM unit 30 is recorded becomes digital signal, is resent to show module 70.In embodiment of the present invention; AD conversion unit 90 is sent to first display unit 71 and second display unit 73 respectively after the current value of power supply 13 outputs converts digital signal to mutually with second with the detected first phase power supply 11; And with the first phase power supply 11 with second mutually the current value of power supply 13 output add with after convert digital signal to; Be sent to the 3rd display unit 75, make through first display unit 71, second display unit 73 and the 3rd display unit 75 and can read first electric current of power supply 11, the second phase power supply 13 and this power supply unit 10 outputs mutually respectively.
Be appreciated that to show that module 70 can be independent display structures such as digital display tube, also can be integrated on this computing machine.
When 100 work of this supply unit, its principle is following: the first phase power supply 11 of the pulse width modulating signal control power supply unit 10 of PWM unit 30 outputs and second voltage exported of power supply 13 mutually, and with to being connected to the power supplies such as load of this supply unit 100.In this process, PWM unit 30 detects respectively through current detecting pin Isen and is connected to the first phase power supply 11 and second electric current on the circuit unit 51 of power supply 13 mutually, and this electric current i.e. the first phase power supply 11 and second electric current exported of power supply 13 mutually.Then; The current value that PWM unit 30 records is exported to the output pin In of AD conversion unit 90 again by electric current output pin Iout; Export first display unit 71 and second display unit 73 to by output pin Out respectively after converting digital signal to the value that PWM unit 30 is recorded through AD conversion unit 90; And with the current value that PWM unit 30 records add with after convert digital signal to; Export the 3rd display unit 75 to by output pin Out again, make win display unit 71 and second display unit 73 show first electric current of power supply 11 and 13 outputs of the second phase power supply mutually respectively, 75 of the 3rd display units show the first phase power supply 11 and second total current of power supply 13 outputs (being the electric current that power supply unit 10 is exported) mutually; So, can be at any time by showing that module 70 reads the electric current of power supply unit 10 outputs.
Obviously; Supply unit 100 of the present invention does not need extra measuring equipment can in time record the electric current of these supply unit 100 outputs; And when being a polyphase source as if this supply unit 100; Also can in time record the electric current of each phase power supply output respectively, and through showing that module 70 shows, so that the power supply situation of the timely monitoring power supply device 100 of user.
Claims (6)
1. supply unit; In order to electronic installation is supplied power; This supply unit comprises power supply unit, it is characterized in that: this supply unit also comprises PWM unit, sample circuit and demonstration module, shows that module, PWM unit, sample circuit and power supply unit electrically connect successively; The PWM unit has some current detecting pins that are connected to sample circuit; The size of current of power supply unit output is measured through the electric current that the current detecting pin detects the sample circuit of flowing through in the PWM unit, and the current value that records is sent to the demonstration module, with the current value through showing that module displays goes out to record.
2. supply unit as claimed in claim 1; It is characterized in that: this supply unit also comprises the AD conversion unit that is electrically connected between PWM unit and the demonstration module, and this AD conversion unit is sent to the demonstration module after converting the detected current value in PWM unit to digital signal.
3. supply unit as claimed in claim 2 is characterized in that: the demonstration module is a digital indicator.
4. supply unit as claimed in claim 2; It is characterized in that: this power supply unit is a polyphase source; Comprise the first phase power supply and second power supply mutually, sample circuit has some circuit units, the first phase power supply with second mutually power supply connect a circuit unit and a current sample pin respectively successively; The PWM unit detects the first phase power supply and second electric current of power supply output mutually simultaneously, and is sent to AD conversion unit.
5. supply unit as claimed in claim 4; It is characterized in that: show that module comprises first display unit and second display unit that is electrically connected on AD conversion unit; First display unit is in order to show the electric current of first phase power supply output, and second display unit is in order to show the electric current of second phase power supply output.
6. supply unit as claimed in claim 5; It is characterized in that: show that module also comprises the 3rd display unit; AD conversion unit with the detected first phase power supply with second mutually the electric current of power supply output add with; And be sent to the 3rd display unit after converting digital signal to, with electric current through the output of the 3rd display unit display power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105129078A CN102455769A (en) | 2010-10-20 | 2010-10-20 | Power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105129078A CN102455769A (en) | 2010-10-20 | 2010-10-20 | Power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102455769A true CN102455769A (en) | 2012-05-16 |
Family
ID=46039031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105129078A Pending CN102455769A (en) | 2010-10-20 | 2010-10-20 | Power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102455769A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300985A (en) * | 2015-06-01 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of current equalizing method controlling input current and circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000284863A (en) * | 1999-03-29 | 2000-10-13 | Nec Kofu Ltd | Redundant power supply |
| CN1462510A (en) * | 2000-09-18 | 2003-12-17 | 国际整流器公司 | Current detection IC |
| CN101021553A (en) * | 2007-03-16 | 2007-08-22 | 三一重工股份有限公司 | PWM current measuring method |
| CN201196778Y (en) * | 2008-04-09 | 2009-02-18 | 卢文标 | Power display equipment |
| EP2042880A2 (en) * | 2007-09-28 | 2009-04-01 | Rockwell Automation Technologies, Inc. | Method and apparatus for diagnosing inverter linkages |
| GB2432008B (en) * | 2005-11-07 | 2009-09-30 | Omnicharge Ltd | Current sensor |
-
2010
- 2010-10-20 CN CN2010105129078A patent/CN102455769A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000284863A (en) * | 1999-03-29 | 2000-10-13 | Nec Kofu Ltd | Redundant power supply |
| CN1462510A (en) * | 2000-09-18 | 2003-12-17 | 国际整流器公司 | Current detection IC |
| GB2432008B (en) * | 2005-11-07 | 2009-09-30 | Omnicharge Ltd | Current sensor |
| CN101021553A (en) * | 2007-03-16 | 2007-08-22 | 三一重工股份有限公司 | PWM current measuring method |
| EP2042880A2 (en) * | 2007-09-28 | 2009-04-01 | Rockwell Automation Technologies, Inc. | Method and apparatus for diagnosing inverter linkages |
| CN201196778Y (en) * | 2008-04-09 | 2009-02-18 | 卢文标 | Power display equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300985A (en) * | 2015-06-01 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of current equalizing method controlling input current and circuit |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |