CN201657145U - Low-power consumption circuit based on TSUMV26KU - Google Patents
Low-power consumption circuit based on TSUMV26KU Download PDFInfo
- Publication number
- CN201657145U CN201657145U CN201020133934XU CN201020133934U CN201657145U CN 201657145 U CN201657145 U CN 201657145U CN 201020133934X U CN201020133934X U CN 201020133934XU CN 201020133934 U CN201020133934 U CN 201020133934U CN 201657145 U CN201657145 U CN 201657145U
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- CN
- China
- Prior art keywords
- tsumv26ku
- wakeup
- synchronous buck
- master chip
- 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.)
- Expired - Fee Related
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model discloses a low-power consumption circuit based on a TSUMV26KU. The circuit is characterized in that: the circuit comprises the main chip TSUMV26KU and a synchronous buck regulator MP1484; the wakeup signal end WAKEUP of the main chip TSUMV26KU is connected with the enable end EN of the synchronous buck regulator MP1484; and the voltage output end OUT of the synchronous buck regulator MP1484 is connected with the AVDDA end, VPPP end and VDDC end of the main chip TSUMV26KU. The wakeup signal end WAKEUP of the main chip TSUMV26KU is connected with the power control end of a tuner intermediate frequency amplifier circuit. The application of the circuit can remarkably reduce the power consumption of a television in a standby state.
Description
Technical field
The utility model relates to a kind of low consumption circuit based on TSUMV26KU.
Background technology
Existing liquid crystal TV set, only has standby mode [being the Standby pattern], when remote controller or button are pressed " shutdown " is to have entered the Standby pattern in fact, television set enters holding state, mainboard, power panel also have power supply, and tuner [Tuner], power amplifier, internal memory also have power supply, and each IO mouth of master chip still is in detected state, program only is the liquid crystal display screen outage still in full speed running.Therefore, still need consume a part of electric energy, energy-saving effect is also not obvious.
The utility model content
The utility model wants the technical solution problem to provide low consumption circuit based on TSUMV26KU, and this circuit can significantly reduce the power consumption of television set when holding state.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be:
A kind of low consumption circuit based on TSUMV26KU is characterized in that, comprises master chip TSUMV26KU and synchronous buck pressurizer MP1484; The wake-up signal end (WAKEUP) of master chip TSUMV26KU joins with the Enable Pin (EN) of synchronous buck pressurizer MP1484; The voltage output end (OUT) of synchronous buck pressurizer MP1484 joins with the AVDDA of master chip TSUMV26KU end, VPPP end and VDDC end.
The wake-up signal end (WAKEUP) of described master chip TSUMV26KU joins with the power control terminal of tuner intermediate level circuit.
The beneficial effects of the utility model:
Use MStar chip TSUMV26KU, support two kinds of Mode S tandby and PM[power management] pattern.Chip consumes minimum current under the PM pattern, energy savings.Under this pattern master chip only P110 and P23 pin need power, peripheral button, remote control need be powered, other power amplifier, Flash, Tuner, liquid crystal display screen etc. all turn-off power supply.
The technical characterstic of this circuit is:
Under the PM pattern in the chip main program out of service, chip SAR0 only under the PM pattern, SAR1, SAR2, IRIN, WAKEUP, CEC, DDCA_DAT, DDCA_CLK, DDCD_SDA, DDCD_SCL is controlled, and other IO mouth all turn-offs, and does not need power supply, wake up under the PM pattern and can wake up through IR/CEC/KEYPAD/RTC/DDCD, the chip power consumption is extremely low.
Current sinking is little: P110 pin 3.3V 1.4mA, P23 pin 3.3V 6.8mA, add peripheral components required when 12V imports electric current be 18.85MA, the mainboard standby power is 0.226W, adds power panel consumption, idle function can be accomplished less than 0.5W.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model;
Fig. 2 is the connection diagram of the power end of the wake-up signal end of master chip TSUMV26KU and tuner intermediate level circuit.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1:
As shown in Figure 1, a kind of low consumption circuit based on TSUMV26KU is characterized in that, comprises master chip TSUMV26KU and synchronous buck pressurizer MP1484; The Enable Pin EN of the wake-up signal end WAKEUP of master chip TSUMV26KU and synchronous buck pressurizer MP1484 joins; The voltage output end OUT of synchronous buck pressurizer MP1484 and the AVDDA of master chip TSUMV26KU end, VPPP end and VDDC end join.The wake-up signal end WAKEUP of described master chip TSUMV26KU and the power control terminal of tuner intermediate level circuit join.
WAKEUP is a low level during PM pattern, and MP1484 does not work, and does not have 5V output, makes AVDDA, VDDP, AVDD_AU, AVDD_VIF, the VDDC of TSUMV26KU not power conversely, thereby effectively reduces power consumption.
As shown in Figure 2, during the PM pattern, WAKEUP is a low level, and metal-oxide-semiconductor AO3407 turn-offs, and+12V_PM is 0, cuts off the power supply of tuner intermediate-frequency strip.
Claims (2)
1. the low consumption circuit based on TSUMV26KU is characterized in that, comprises master chip TSUMV26KU and synchronous buck pressurizer MP1484; The wake-up signal end (WAKEUP) of master chip TSUMV26KU joins with the Enable Pin (EN) of synchronous buck pressurizer MP1484; The voltage output end (OUT) of synchronous buck pressurizer MP1484 joins with the AVDDA of master chip TSUMV26KU end, VPPP end and VDDC end.
2. the low consumption circuit based on TSUMV26KU according to claim 1 is characterized in that, the wake-up signal end (WAKEUP) of described master chip TSUMV26KU joins with the power control terminal of tuner intermediate level circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020133934XU CN201657145U (en) | 2010-03-17 | 2010-03-17 | Low-power consumption circuit based on TSUMV26KU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020133934XU CN201657145U (en) | 2010-03-17 | 2010-03-17 | Low-power consumption circuit based on TSUMV26KU |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657145U true CN201657145U (en) | 2010-11-24 |
Family
ID=43122373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020133934XU Expired - Fee Related CN201657145U (en) | 2010-03-17 | 2010-03-17 | Low-power consumption circuit based on TSUMV26KU |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657145U (en) |
-
2010
- 2010-03-17 CN CN201020133934XU patent/CN201657145U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20110317 |