GB2591200A - Power supply circuit, controlling method and lighting driver - Google Patents
Power supply circuit, controlling method and lighting driver Download PDFInfo
- Publication number
- GB2591200A GB2591200A GB2104801.2A GB202104801A GB2591200A GB 2591200 A GB2591200 A GB 2591200A GB 202104801 A GB202104801 A GB 202104801A GB 2591200 A GB2591200 A GB 2591200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- controller
- terminal
- input port
- circuit
- 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.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A power supply circuit, a controlling method and a lighting equipment. The power supply circuit includes: a set of input ports; a set of output ports; a controller; a convertor; and a controlling circuit, configured to be connected to the set of input ports and the controller, the controller is configured to detect which function is used according to signals outputted from the controlling circuit, and generate signals inputted to the controlling circuit according to the detecting result. Therefore, the space of the circuit can be reduced, and cost down can be brought.
Claims (13)
1. A power supply circuit, comprising: a set of input ports, configured to comprise a first input port and a second input port, and be inputted input voltage or current; a set of output ports, configured to output supply voltage or current; a controller; a convertor, configured to convert the input voltage or current into the supply voltag e or current, under the controlling of the controller, wherein, the convertor is able to perform at least two functions, the at least two functions comprises dimming function and current selecti ng (Iselect) function; and a controlling circuit, configured to be connected to the set of input ports and the controller, the controller is configured to detect which function is used according to signals outputted from the controlling circuit, and generate signals inputted to the controlling circuit according to the detecting result, the power supply circuit is used to supply a lighting means, the current selecting function is used to choose correct supply current f or the lighting means.
2. The power supply circuit according to claim 1, wherein, the controlling circuit comprises: a first circuit, configured to comprise: an current selecting resistor connected between the first input port and the second input port, a first transistor connected between VDD and the first input port, and a second transistor connected between base of the first resistor and the second input port; and a second circuit, configured to comprise: a third transistor, a first resistor (R8) , and a forth transistor connecting in series between the first input port and the second input port, a first terminal of the controller connects to base of the second transist or, a second terminal of the controller connects to a first connecting node be tween the third transistor and the first resistor; a third terminal of the controller connects to base of the fourth transist or, a fourth terminal of the controller connects to a second connecting node b etween the first transistor and the current selecting resistor.
3. The power supply circuit according to claim 2, wherein, when the first terminal outputs low level signal and the third terminal ou tputs high level signal: if the second terminal inputs high level signal, the controller determines the dimming function is used; if the second terminal inputs low level signal, the controller determines the current selecting (Iselect) function is used.
4. The power supply circuit according to claim 3, wherein, when the controller determines the dimming function is used, after a first predetermined period of time, the controller outputs low level signal via the first terminal and output s low level signal via the third terminal.
5. The power supply circuit according to claim 3, wherein, when the controller determines the current select (Iselect) function is used, after a second predetermined period of time, the controller detects current inputted via the fourth terminal, and controls the convertor to generate the supply current according to th e detected current, so as to adjust the supply current.
6. The power supply circuit according to claim 5, wherein, the power supply circuit further comprises: a storage device, configured to store the supply current status.
7. A lighting driver, comprising the power supply circuit according to any one of claim 1 to cl aim 6.
8. A controlling method of a power supply circuit, the power supply circuit comprising: a set of input ports, configured to comprise a first input port and a second input port, and be inputted input voltage or current; a set of output ports, configured to output supply voltage or current; a controller; a convertor, configured to convert the input voltage or current into the supply voltag e or current, under the controlling of the controller, wherein, the convertor is able to perform at least two functions, the at least two functions comprises dimming function and current selecti ng (Iselect) function ; and a controlling circuit, configured to be connected to the input ports and the controller, the controlling method comprises: the controller detects which function is used according to signals outputt ed from the controlling circuit; and the controller generates signals inputted to the controlling circuit accor ding to the detecting result.
9. The controlling method according to claim 8, wherein, the controlling circuit comprises: a first circuit, configured to comprise: an current selecting resistor connected between the first input port and the second input port, a first transistor connected between VDD and the first input port, and a second transistor connected between base of the first resistor and the second input port; and a second circuit, configured to comprise: a third transistor, a first resistor (R8) , and a forth transistor connecting in series between the first input port and the second input port, a first terminal of the controller connects to base of the second transist or, a second terminal of the controller connects to a first connecting node be tween the third transistor and the first resistor; a third terminal of the controller connects to base of the fourth transist or, a fourth terminal of the controller connects to a second connecting node b etween the first transistor and the current selecting resistor.
10. The controlling method according to claim 8, the controller detects which function is used, comprises: when the first terminal outputs low level signal and the third terminal ou tputs high level signal: if the second terminal inputs high level signal, the controller determines the dimming function is used; if the second terminal inputs low level signal, the controller determines the current selecting (Iselect) function is used.
11. The controlling method according to claim 10, wherein, the controller generates signals inputted to the controlling circuit acco rding to the detected result comprises: when the controller determines the dimming function is used, after a first predetermined period of time, the controller outputs low level signal via the first terminal and output s low level signal via the third terminal.
12. The controlling method according to claim 10, wherein, the controller generates signals inputted to the controlling circuit acco rding to the detected result comprises: when the controller determines the current select (Iselect) function is used, after a second predetermined period of time, the controller detects current inputted via the fourth terminal, and controls the convertor to generate the supply current according to th e detected current, so as to adjust the supply current.
13. The controlling method according to claim 10, wherein, the method further comprises: storing the supply current status in a storage device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/115026 WO2020097754A1 (en) | 2018-11-12 | 2018-11-12 | Power supply circuit, controlling method and lighting driver |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB202104801D0 GB202104801D0 (en) | 2021-05-19 |
| GB2591200A true GB2591200A (en) | 2021-07-21 |
| GB2591200B GB2591200B (en) | 2022-07-27 |
Family
ID=70730941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2104801.2A Active GB2591200B (en) | 2018-11-12 | 2018-11-12 | Power supply circuit, controlling method and lighting driver |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2591200B (en) |
| WO (1) | WO2020097754A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202261910U (en) * | 2011-02-22 | 2012-05-30 | 鸿科电子实业有限公司 | Integrated system used for providing direct current and brightness adjustment for an LED |
| US20120280617A1 (en) * | 2009-08-07 | 2012-11-08 | Jack Josefowicz | Single-ended primary inductance converter (sepic) based power supply for driving multiple strings of light emitting diodes (leds) in roadway lighting fixtures |
| US20130091616A1 (en) * | 2010-06-18 | 2013-04-18 | Paul Hartmann Ag | Medical clothing item |
| CN204598413U (en) * | 2015-05-13 | 2015-08-26 | 深圳市垅运照明电器有限公司 | A kind of LED light adjusting circuit possessing multiple current and select |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI441428B (en) * | 2011-07-06 | 2014-06-11 | Macroblock Inc | Auto-selecting holding current circuit |
-
2018
- 2018-11-12 GB GB2104801.2A patent/GB2591200B/en active Active
- 2018-11-12 WO PCT/CN2018/115026 patent/WO2020097754A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120280617A1 (en) * | 2009-08-07 | 2012-11-08 | Jack Josefowicz | Single-ended primary inductance converter (sepic) based power supply for driving multiple strings of light emitting diodes (leds) in roadway lighting fixtures |
| US20130091616A1 (en) * | 2010-06-18 | 2013-04-18 | Paul Hartmann Ag | Medical clothing item |
| CN202261910U (en) * | 2011-02-22 | 2012-05-30 | 鸿科电子实业有限公司 | Integrated system used for providing direct current and brightness adjustment for an LED |
| CN204598413U (en) * | 2015-05-13 | 2015-08-26 | 深圳市垅运照明电器有限公司 | A kind of LED light adjusting circuit possessing multiple current and select |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2591200B (en) | 2022-07-27 |
| WO2020097754A1 (en) | 2020-05-22 |
| GB202104801D0 (en) | 2021-05-19 |
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