CN105450012A - Consumer electronic product test power supply system - Google Patents
Consumer electronic product test power supply system Download PDFInfo
- Publication number
- CN105450012A CN105450012A CN201510824881.3A CN201510824881A CN105450012A CN 105450012 A CN105450012 A CN 105450012A CN 201510824881 A CN201510824881 A CN 201510824881A CN 105450012 A CN105450012 A CN 105450012A
- Authority
- CN
- China
- Prior art keywords
- cpu
- power supply
- terminal
- ldo
- connects
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Voltage And Current In General (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a consumption electronic product test power supply system, comprising an LDO, a DC/DC, a difference amplifier and a CPU. The DC/DC is connected to the power supply terminal, the LDO, a sampling resistor, a grounding thermistor, a power supply anode of a detected product, a CPU enabling terminal and a non-inverting terminal of a difference amplifier; the other terminal of the sampling resistor is connected to the inverting terminal of the difference amplifier, an ADC terminal of a CPU and a power supply anode of the detected product; the output terminal of the difference amplifier is connected to a second ADC port of the CPU; the CPU is connected to a serial data input, an enabling input and an overload sign output; and the LDO is connected to the VCC terminal of the CPU The consumer electronic product test power supply system is small in size, low in cost, easy in production, high in yield, compensates the voltage drop generated by the lead connection, has the overcurrent protection current which can be set, and increases output current to 6A.
Description
Technical field
The present invention relates to a kind of test macro, specifically a kind of consumer electronics product testing power.
Background technology
Any power equipment all need one reliablely and stablely electric power system provide electric energy for it, so electric power system is self-evident for the importance of power equipment, each electric power system has to pass through strict test could drop into industrial application.
Current power supply mainly contains two large classes: 1, DC power supply equipment.The use program is powered, and output voltage regulates precisely (0 ~ 30V0.2%+3mV), and output current regulates precisely (0 ~ 3000mA0.2%+3mA), ripple: 3mV; 2, power supply adaptor is powered, line regulation: 1%, ripple: 50mV, overload: export more than 300% pulse protection.
But all there is following problem in this two large class: can produce Line Attenuation when causing load end by wire; Power supply unit is huge, and electric current is limited; Overcurrent protection function can not set.
Summary of the invention
The object of the present invention is to provide a kind of consumer electronics product testing power, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of consumer electronics product testing power, comprise LDO, DC/DC, differential amplifier and CPU, described DC/DC connects feeder ear respectively, LDO, sampling resistor, ground connection thermistor, test product positive source, CPU Enable Pin and differential amplifier in-phase end, the sampling resistor other end connects differential amplifier end of oppisite phase respectively, an ADC port of CPU and test product positive source, differential amplifier output connects second ADC port of CPU, CPU also connects serial date transfer, enable input and overload mark export, described LDO also connects the VCC end of CPU.
As the present invention's further scheme: described feeder ear voltage is 5 ~ 21V.
Compared with prior art, the invention has the beneficial effects as follows: consumer electronics product testing power volume of the present invention little (only having 5% size of existing product), cost low (only having 15% of existing product), compensate for due to wire connect produce voltage drop, easily produce, output is high, overcurrent protection electric current can set, output current is promoted to 6A.
Accompanying drawing explanation
Fig. 1 is the structural representation of consumer electronics product testing power.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, a kind of consumer electronics product testing power, comprise LDO, DC/DC, differential amplifier and CPU, described DC/DC connects feeder ear respectively, LDO, sampling resistor, ground connection thermistor, test product positive source, CPU Enable Pin and differential amplifier in-phase end, the sampling resistor other end connects differential amplifier end of oppisite phase respectively, an ADC port of CPU and test product positive source, differential amplifier output connects second ADC port of CPU, CPU also connects serial date transfer, enable input and overload mark export, described LDO also connects the VCC end of CPU.
Described feeder ear voltage is 5 ~ 21V.
Operation principle of the present invention is: the input of 5 ~ 21V power supply exports setting voltage after DC/DC conversion, then outputs to load end through sampling resistor (0.1%); Current signal is converted to the ADC input that voltage signal is transported to CPU through differential amplifier by sampling resistor; The enable pin of CPU control DC/DC controls to export, and by the output detections to the voltage detecting exported and differential amplifier, distinguishes and whether exports fault, overcurrent.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a consumer electronics product testing power, comprise LDO, DC/DC, differential amplifier and CPU, it is characterized in that, described DC/DC connects feeder ear respectively, LDO, sampling resistor, ground connection thermistor, test product positive source, CPU Enable Pin and differential amplifier in-phase end, the sampling resistor other end connects differential amplifier end of oppisite phase respectively, an ADC port of CPU and test product positive source, differential amplifier output connects second ADC port of CPU, CPU also connects serial date transfer, enable input and overload mark export, described LDO also connects the VCC end of CPU.
2. consumer electronics product testing power according to claim 1, is characterized in that, described feeder ear voltage is 5 ~ 21V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824881.3A CN105450012A (en) | 2015-11-24 | 2015-11-24 | Consumer electronic product test power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824881.3A CN105450012A (en) | 2015-11-24 | 2015-11-24 | Consumer electronic product test power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105450012A true CN105450012A (en) | 2016-03-30 |
Family
ID=55559899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510824881.3A Pending CN105450012A (en) | 2015-11-24 | 2015-11-24 | Consumer electronic product test power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105450012A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08168237A (en) * | 1994-12-15 | 1996-06-25 | Fujitsu Ltd | Stabilized direct-current power supply |
| CN201821142U (en) * | 2010-10-21 | 2011-05-04 | 艾利和电子科技(中国)有限公司 | Portable electronic product power supply system |
| CN102148494A (en) * | 2010-02-10 | 2011-08-10 | 艾默生网络能源系统北美公司 | Bridge arm conduction protection circuit and rectification circuit |
| CN102158066A (en) * | 2011-03-30 | 2011-08-17 | 天津市三源电力设备制造有限公司 | Direct-current (DC) power supply for guaranteeing fully stored energy of stored energy motors of breaker and load switch |
| JP2011259653A (en) * | 2010-06-11 | 2011-12-22 | Fujitsu Ltd | Power management circuit, and high-frequency circuit ic including the same |
| CN102545155A (en) * | 2012-03-02 | 2012-07-04 | 南开大学 | Active reverse connection prevention and protection circuit of solar cell |
| CN203967995U (en) * | 2014-07-17 | 2014-11-26 | 南京机电职业技术学院 | A kind of controlled rectification D.C. regulated power supply |
| CN204644703U (en) * | 2014-11-28 | 2015-09-16 | 青岛海尔科技有限公司 | A kind of energy-saving control circuit for washing machine and washing machine |
-
2015
- 2015-11-24 CN CN201510824881.3A patent/CN105450012A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08168237A (en) * | 1994-12-15 | 1996-06-25 | Fujitsu Ltd | Stabilized direct-current power supply |
| CN102148494A (en) * | 2010-02-10 | 2011-08-10 | 艾默生网络能源系统北美公司 | Bridge arm conduction protection circuit and rectification circuit |
| JP2011259653A (en) * | 2010-06-11 | 2011-12-22 | Fujitsu Ltd | Power management circuit, and high-frequency circuit ic including the same |
| CN201821142U (en) * | 2010-10-21 | 2011-05-04 | 艾利和电子科技(中国)有限公司 | Portable electronic product power supply system |
| CN102158066A (en) * | 2011-03-30 | 2011-08-17 | 天津市三源电力设备制造有限公司 | Direct-current (DC) power supply for guaranteeing fully stored energy of stored energy motors of breaker and load switch |
| CN102545155A (en) * | 2012-03-02 | 2012-07-04 | 南开大学 | Active reverse connection prevention and protection circuit of solar cell |
| CN203967995U (en) * | 2014-07-17 | 2014-11-26 | 南京机电职业技术学院 | A kind of controlled rectification D.C. regulated power supply |
| CN204644703U (en) * | 2014-11-28 | 2015-09-16 | 青岛海尔科技有限公司 | A kind of energy-saving control circuit for washing machine and washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |