GB2622508A - Power supply circuit, driver and controlling method - Google Patents
Power supply circuit, driver and controlling method Download PDFInfo
- Publication number
- GB2622508A GB2622508A GB2318956.6A GB202318956A GB2622508A GB 2622508 A GB2622508 A GB 2622508A GB 202318956 A GB202318956 A GB 202318956A GB 2622508 A GB2622508 A GB 2622508A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- power supply
- supply circuit
- network
- output 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract 6
- 241001481828 Glyptocephalus cynoglossus Species 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
-
- 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/39—Circuits containing inverter bridges
Landscapes
- Dc-Dc Converters (AREA)
Abstract
A power supply circuit, a driver and a controlling method. The power supply circuit includes: a first switch network, configured to be connected between a first input port and a second input port, the first switch network comprising a first switch (Q1) and a second switch (Q2) in series connection; a second switch network, configured to be connected between the first input port and the second input port, the second switch network comprising a third switch (Q3) and a fourth switch (Q4) in series connection; a resonant circuit, configured to comprise a first capacitor (C1) and a first inductor (L1) in series connection, the first capacitor (C1) being connected to a connecting node between the first switch (Q1) and the second switch (Q2); a transformer, configured to comprise a primary coil and a secondary coil, the primary coil being connected between the first inductor (L1) and a connecting node between the third switch (Q3) and the fourth switch (Q4); an output circuit, configured to be connected to the secondary coil, and output an output voltage from an output port; and a controller, configured to control the first switch network and the second switch network to work under a full-bridge mode or a half-bridge mode, according to the output voltage.
Claims (13)
1. A power supply circuit, comprising: a first switch network, configured to be connected between a first input port and a second input port, the first switch network comprising a first switch (Q1) and a second switch (Q2) in series connection; a second switch network, configured to be connected between the first input port and the second in put port, the second switch network comprising a third switch (Q3) and a fourth switch (Q4) in series connection; a resonant circuit, configured to comprise a first capacitor (C1) and a first inductor (L1) in series connection, the first capacitor (C1) being connected to a connecting node between the first switch (Q1) and the second switch (Q2) ; a transformer, configured to comprise a primary coil and a secondary coil, the primary coil being connected between the first inductor (L1) and a connecting node between the third switch (Q3) and the fourth switch (Q4) ; an output circuit, configured to be connected to the secondary coil, and output an output voltage from an output port; and a first controller, configured to control the first switch network and the second switch netw ork to work under a full-bridge mode or a half-bridge mode, according to the output voltage.
2. The power supply circuit according to claim 1, wherein, when the output voltage is lower than a threshold, the first controller controls the third switch to keep off, and the fourth switch to keep on, so as to control the first switch network and the second witch network to work under the half-bridge mode.
3. The power supply circuit according to claim 1, wherein, when the output voltage is equal or higher than a threshold, the first controller controls the third switch and the fourth switch to b e periodically on and off.
4. The power supply circuit according to claim 3, wherein, a first controlling signal sent to the first switch (Q1) is the same as a fourth controlling signal sent to the fourth switch (Q4) , a second controlling signal sent to the second switch (Q2) is the same as a third controlling signal sent to the third switch (Q3) .
5. The power supply circuit according to claim 4, wherein, when the first switch (Q1) is on, the second switch (Q2) is off.
6. The power supply circuit according to claim 1, wherein, the power supply circuit further comprises: a voltage sensing circuit, configured to be connected between the output port and the first controll er, the voltage sensing circuit senses the output voltage and send the sensin g result to the first controller.
7. A driver, used for driving a lighting device, the driver comprises the power supply circuit according to any one of cla ims 1-6 and a control circuit, wherein, the power supply circuit providing power to the lighting device, the control circuit communicates with the power supply circuit, the control circuit communicates with a peripheral device.
8. A controlling method of a power supply circuit, the power supply circuit comprising: a first switch network, configured to be connected between a first input port and a second input port, the first switch network comprising a first switch (Q1) and a second switch (Q2) in series connection; a second switch network, configured to be connected between the first input port and the second in put port, the second switch network comprising a third switch (Q3) and a fourth switch (Q4) in series connection; a resonant circuit, configured to comprise a first capacitor (C1) and a first inductor (L1) in series connection, the first capacitor (C1) being connected to a connecting node between the first switch (Q1) and the second switch (Q2) ; a transformer, configured to comprise a primary coil and a secondary coil, the primary coil being connected between the first inductor (L1) and a connecting node between the third switch (Q3) and the fourth switch (Q4) ; an output circuit, configured to be connected to the secondary coil, and output an output voltage from an output port; and a first controller, the controlling method comprising: the first controller controlling the first switch network and the second s witch network to work under a full-bridge mode or a half-bridge mode, according to the output voltage.
9. The controlling method of the power supply circuit according to claim 8, wherein, the controlling comprises: when the output voltage is lower than a threshold, the first controller controls the third switch to keep off, and the fourth switch to keep on, so as to control the first switch network and the second witch network to work under the half-bridge mode.
10. The controlling method of the power supply circuit according to claim 8, wherein, the controlling comprises: when the output voltage is equal or higher than a threshold, the first controller controls the third switch and the fourth switch to b e periodically on and off.
11. The controlling method of the power supply circuit according to claim 10, wherein, a first controlling signal sent to the first switch (Q1) is the same as a fourth controlling signal sent to the fourth switch (Q4) , a second controlling signal sent to the second switch (Q2) is the same as a third controlling signal sent to the third switch (Q3) .
12. The controlling method of the power supply circuit according to claim 11, wherein, when the first switch (Q1) is on, the second switch (Q2) is off.
13. The controlling method of the power supply circuit according to claim 8, wherein, the controlling method further comprises: sensing the output voltage and sending the sensing result to the first con troller.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/105502 WO2023279377A1 (en) | 2021-07-09 | 2021-07-09 | Power supply circuit, driver and controlling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202318956D0 GB202318956D0 (en) | 2024-01-24 |
| GB2622508A true GB2622508A (en) | 2024-03-20 |
Family
ID=84800269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2318956.6A Pending GB2622508A (en) | 2021-07-09 | 2021-07-09 | Power supply circuit, driver and controlling method |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2622508A (en) |
| WO (1) | WO2023279377A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110094377A1 (en) * | 2008-07-04 | 2011-04-28 | Johannes Theodorus Nel | Recovery of a gaseous component from a mixture of gaseous compounds |
| US20140084802A1 (en) * | 2012-09-24 | 2014-03-27 | Exscitron Gmbh | Current source having an improved dimming device |
| WO2016177189A1 (en) * | 2015-08-31 | 2016-11-10 | 中兴通讯股份有限公司 | Synchronous rectification drive circuit used in llc resonant converter |
| US20170317524A1 (en) * | 2015-01-19 | 2017-11-02 | Jageson Electronic Technology (ShenZhen) Co.Ltd. | Digitalized double-excitation uninterrupted switching power supply |
| US10833594B2 (en) * | 2017-05-19 | 2020-11-10 | Infineon Technologies Austria Ag | System and method of controlling a power converter having an LC tank coupled between a switching network and a transformer winding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995025A (en) * | 2019-12-20 | 2020-04-10 | 矽力杰半导体技术(杭州)有限公司 | Switching power supply circuit |
-
2021
- 2021-07-09 WO PCT/CN2021/105502 patent/WO2023279377A1/en unknown
- 2021-07-09 GB GB2318956.6A patent/GB2622508A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110094377A1 (en) * | 2008-07-04 | 2011-04-28 | Johannes Theodorus Nel | Recovery of a gaseous component from a mixture of gaseous compounds |
| US20140084802A1 (en) * | 2012-09-24 | 2014-03-27 | Exscitron Gmbh | Current source having an improved dimming device |
| US20170317524A1 (en) * | 2015-01-19 | 2017-11-02 | Jageson Electronic Technology (ShenZhen) Co.Ltd. | Digitalized double-excitation uninterrupted switching power supply |
| WO2016177189A1 (en) * | 2015-08-31 | 2016-11-10 | 中兴通讯股份有限公司 | Synchronous rectification drive circuit used in llc resonant converter |
| US10833594B2 (en) * | 2017-05-19 | 2020-11-10 | Infineon Technologies Austria Ag | System and method of controlling a power converter having an LC tank coupled between a switching network and a transformer winding |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202318956D0 (en) | 2024-01-24 |
| WO2023279377A1 (en) | 2023-01-12 |
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