CN201937751U - Remotely-controlled standby and wakeup control circuit - Google Patents
Remotely-controlled standby and wakeup control circuit Download PDFInfo
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- CN201937751U CN201937751U CN2011200150782U CN201120015078U CN201937751U CN 201937751 U CN201937751 U CN 201937751U CN 2011200150782 U CN2011200150782 U CN 2011200150782U CN 201120015078 U CN201120015078 U CN 201120015078U CN 201937751 U CN201937751 U CN 201937751U
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Abstract
The utility model belongs to the field of set top boxes, and provides a remotely-controlled standby and wakeup control circuit, which comprises a rectification filter circuit, a transformer, a switch tube, four transformer secondary output channels and a double-MOS (metal oxide semiconductor) tube. The first transformer secondary output channel and the second transformer secondary output channel are connected with the double-MOS tube, the third transformer secondary output channel is connected with a signal end via a first triode and a second triode, and the fourth transformer secondary output channel is respectively connected with the first triode and a +20V power end. The novel remotely-controlled standby and wakeup circuit omits a second double-MOS tube and a power supply circuit of the second double-MOS tube, can realize closing of four output power sources by the aid of the double-MOS tube, realizes identical functions at lower cost, and accordingly achieves the purposes of saving cost and energy sources and prolonging expected service life of an integral machine.
Description
Technical field
The utility model relates to the set-top box technique field, relates in particular to a kind of remote control standby and wake-up control circuit.
Background technology
Current digital TV set-top box great majority are under holding state, only forbid the audio frequency and video output of set-top box, again indicator light being shown as holding state gets final product, the state of remaining part is identical when following operate as normal, this standby mode circuit design is simple, but stand-by power consumption is maximum, and almost the power consumption with STB working status is suitable, does not possess the idle function of low-power consumption.Standby in this state, the components and parts of set-top box inside are still in running order, reduced the life expectancy of complete machine and the waste of the energy like this.
In digital TV set-top box, existing for making things convenient for the remote control switch machine operation, a kind of new method of low-power consumption standby (less than 0.5W) set-top box standby of simplification is provided.Powered-down output after receiving standby signal changes the low-power consumption standby state over to and can in time wake up fast, lower power consumption when keeping standby.Utilize remote control control power supply output state, realized the low-power consumption standby of set-top box.Close current power supply (4 tunnel) output and adopt 4 metal-oxide-semiconductors mostly; Its circuit theory diagrams such as accompanying drawing 1.U2, U4 turn-off metal-oxide-semiconductor for output among the figure, adopt this method to realize turn-offing, and need to use more external component, the cost height, and production efficiency is low.
Summary of the invention
The purpose of this utility model is to provide a kind of remote control standby and wake-up control circuit.
The utility model purpose is achieved through the following technical solutions.
A kind of remote control standby and wake-up control circuit comprise: current rectifying and wave filtering circuit, transformer, switching tube, four tunnel outputs of transformer secondary; Also comprise two metal-oxide-semiconductors, described transformer secondary first via output, the second tunnel output link to each other with two metal-oxide-semiconductors, the output of its Third Road connects signal end through first triode, second triode, the four tunnel output of transformer secondary respectively with first triode and+the 20V power end links to each other.
Described, also comprise low-pass filter circuit, described low-pass filter circuit one termination power input, another termination current rectifying and wave filtering circuit.
Described, described switching tube one termination transformer, the other end links to each other with two metal-oxide-semiconductors through the PWM sampling.
Described, described first triode is the PNP triode, and described second triode is the NPN triode.
Described, described pair of metal-oxide-semiconductor is the inner integrated two-way metal-oxide-semiconductor of N-MOS.
The utility model embodiment compared with prior art, beneficial effect is: the utility model proposes a kind of new remote control standby and wake-up control circuit, the power supply circuits of two metal-oxide-semiconductor and metal-oxide-semiconductor have been saved, only can realize closing 4 road out-put supplies with 1 two metal-oxide-semiconductor, reach the lower cost of utilization, realize identical functions, thereby save the purpose of the life expectancy of cost and the energy and lifting complete machine.
Description of drawings
Fig. 1 is existing remote control standby and wake-up control circuit theory diagram;
Fig. 2 is the utility model schematic block circuit diagram;
Fig. 3 is the utility model circuit theory diagrams.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 2, shown in Figure 3, power input is through low-pass filter circuit (EMI filter circuit), current rectifying and wave filtering circuit and the former limit of transformer T input, four tunnel outputs of transformer T secondary, first, second output links to each other with two metal-oxide-semiconductor U3, the 3rd output meets signal end PWON through triode Q3, triode Q4, the 4th output respectively with triode Q3 and+the 20V power end links to each other; Switching tube one termination transformer T, the other end links to each other with two metal-oxide-semiconductor U3 through the PWM sampling.
U3 is two metal-oxide-semiconductors, and Q3 is the PNP triode, and Q4 is the NPN triode, and CON1 is an output line, is used to connect mainboard and power panel.
U3 is the inner integrated two-way metal-oxide-semiconductor of N-MOS, the extremely external high level conducting of G (GS=10V), and the S utmost point of U3 is received on the 5V, and the G utmost point is received on the 15V, can satisfy turn-on condition.P type triode Q3 goes here and there+the 15V output circuit in, N type triode Q4 general+5V converts the controllable level of MCU to, PWON receives on the I/O mouth of MCU.R29, R30 dividing potential drop, the dividing potential drop threshold values is for avoiding line drop or interference level gets final product.
When POWN is high level when receiving standby signal (being higher than R29, R30 dividing potential drop threshold values), Q4 ends, and the Q3 base stage is a high level, and Q3 ends.+ 15V ,+20V exports shutoff, and the G of U3 is low level very, and U3 ends.Have only when a little+S3.3V powers to MCU, and the output closing machine enters the low-power consumption standby state.
When POWN was low level when receiving starting-up signal, output began power supply immediately.When the PWON end was low level, Q4 began conducting R29, R30 dividing potential drop threshold values is higher than PWON and satisfies turn-on condition.This moment, the Q3 base stage was a low level.The Q3 conducting ,+15 ,+20V begins power supply output, and the G of U3 is high level very, the U3 conducting ,+5V ,+3.3V begins power supply output.The output normal power supply enters wake-up states.
Compared with the existing, adopt single pair of MOS circuit control, utilize the feature of transformer own, saved the power supply circuits of one tunnel two metal-oxide-semiconductors and metal-oxide-semiconductor.
In sum, adopt single pair of MOS circuit control, realized identical functions.Reduce the BOM cost, reduced the probability of fault simultaneously, had higher practical value.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. remote control standby and wake-up control circuit, comprise: current rectifying and wave filtering circuit, transformer, switching tube, four tunnel outputs of transformer secondary, it is characterized in that, also comprise two metal-oxide-semiconductors, described transformer secondary first via output, the second tunnel output link to each other with two metal-oxide-semiconductors, the output of its Third Road connects signal end through first triode, second triode, the four tunnel output of transformer secondary respectively with first triode and+the 20V power end links to each other.
2. remote control standby as claimed in claim 1 and wake-up control circuit is characterized in that, also comprise low-pass filter circuit, described low-pass filter circuit one termination power input, another termination current rectifying and wave filtering circuit.
3. remote control standby as claimed in claim 2 and wake-up control circuit is characterized in that, described switching tube one termination transformer, and the other end links to each other with two metal-oxide-semiconductors through the PWM sampling.
4. remote control standby as claimed in claim 2 and wake-up control circuit is characterized in that, described first triode is the PNP triode, and described second triode is the NPN triode.
5. remote control standby as claimed in claim 2 and wake-up control circuit is characterized in that, described pair of metal-oxide-semiconductor is the inner integrated two-way metal-oxide-semiconductor of N-MOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200150782U CN201937751U (en) | 2011-01-18 | 2011-01-18 | Remotely-controlled standby and wakeup control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200150782U CN201937751U (en) | 2011-01-18 | 2011-01-18 | Remotely-controlled standby and wakeup control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937751U true CN201937751U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200150782U Expired - Fee Related CN201937751U (en) | 2011-01-18 | 2011-01-18 | Remotely-controlled standby and wakeup control circuit |
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| CN (1) | CN201937751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280978A (en) * | 2013-06-28 | 2013-09-04 | 广州视源电子科技股份有限公司 | Low-power consumption standby circuit based on load mainboard feedback signal |
| CN109474853A (en) * | 2018-11-27 | 2019-03-15 | 深圳Tcl新技术有限公司 | A kind of television set wake-up circuit and the television set with it |
-
2011
- 2011-01-18 CN CN2011200150782U patent/CN201937751U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280978A (en) * | 2013-06-28 | 2013-09-04 | 广州视源电子科技股份有限公司 | Low-power consumption standby circuit based on load mainboard feedback signal |
| CN109474853A (en) * | 2018-11-27 | 2019-03-15 | 深圳Tcl新技术有限公司 | A kind of television set wake-up circuit and the television set with it |
| CN109474853B (en) * | 2018-11-27 | 2021-11-09 | 深圳Tcl新技术有限公司 | Television wake-up circuit and television with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District Yuquanlu Road Yizhe building 7 floor East Patentee after: Shenzhen AOK Polytron Technologies Inc Address before: 518052 Guangdong city of Shenzhen province Nanshan District Yuquanlu Road Yizhe building 7 floor East Patentee before: Shenzhen Sowell Technology Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20190118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |