CN201038741Y - Power management circuit and TV possessing the management circuit - Google Patents
Power management circuit and TV possessing the management circuit Download PDFInfo
- Publication number
- CN201038741Y CN201038741Y CNU2007200197208U CN200720019720U CN201038741Y CN 201038741 Y CN201038741 Y CN 201038741Y CN U2007200197208 U CNU2007200197208 U CN U2007200197208U CN 200720019720 U CN200720019720 U CN 200720019720U CN 201038741 Y CN201038741 Y CN 201038741Y
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- power source
- circuit
- managing chip
- modular
- main power
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Abstract
The utility model discloses a power supply management circuit and a TV set which has all the management circuits, comprising a main power supply, a main power supply management chip and a module circuit. The module circuit comprises a module power supply and a module power supply management chip. Wherein, the detecting terminal of the module power supply management chip is connected with the detected point of the module circuit, and the detecting terminal produces a corresponding control signal according to the detected signal and then transmits to the main power supply management chip; the switch control end of the main power supply management chip is connected with the switch circuit of the main power supply to control the opening and closing of the main power supply; and the switch control end of the module power supply management chip is connected with the switch circuit of the module power supply to control the opening and closing of the module power supply. The utility model adopts a double-layer power supply management mode, so that when the lower layer of module circuit is in abnormal state, a control signal is sent to the upper layer of main power supply management circuit so as to control the whole device into a hold mode, thereby not only increasing the reliability, but also being convenient for achieving the MUTE when stop the device with AC.
Description
Technical field
The utility model belongs to the power circuit technical field, specifically, relates to a kind of electric power management circuit that power supply is carried out fault detect and switch control.
Background technology
Generally all include main power source and the modular power source that is used to monitor power supply in existing television power circuit, traditional electric power management circuit adopts the individual layer management, realizes simple idle function.The greatest problem of conventional power source management circuit is to occur when unusual at the display module circuit, and machine system only is controlled to be the modular power source outage of display module circuit supply, and main power source does not turn-off.At this moment, display screen is closed, but the complete machine motherboard circuit still working on, and not only causes energy waste, but also might cause consumer's misoperation, and security performance can not get powerful guarantee.In addition, traditional television power circuit can not realize that when ac dump software is quiet, it is quiet to increase hardware circuit, for different power panels, need the different mute circuit of design, and need test the power-off sequential of power supply, the generation of abnormal sound causes the debugging work of mute circuit to waste time and energy when avoiding the television set power down.
The utility model content
Goal of the invention of the present utility model is to provide a kind of electric power management circuit that adopts the dual-level management pattern, occurs when unusual at the display module circuit, cuts off the complete machine main power source, and the control complete machine enters holding state, to improve the reliability of circuitry work.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
The utility model has at first proposed a kind of electric power management circuit, comprises main power source, main power source managing chip and modular circuit, is included as the modular power source and the modular power source managing chip of modular circuit power supply in described modular circuit; Wherein, the measuring point to be checked in the detection port link block circuit of described modular power source managing chip, and generate control signal corresponding according to detection signal and export to described main power source managing chip; The switch control end of described main power source managing chip connects the switching circuit of main power source, and main power source is carried out switch control; The switch control end of described modular power source managing chip connects the switching circuit of described modular power source, the switch of control module power supply.
Handle for the magnitude of voltage to modular power source output carries out step-down, with the input current potential requirement of matching module power management chip detection port, the detection port of described modular power source managing chip connects measuring point to be checked in the described modular circuit by bleeder circuit.
Wherein, the detection port of described modular power source managing chip is its analog-to-digital conversion port.
Further, described modular circuit is the display module circuit, and its measuring point to be checked is the voltage output end of drive circuit and/or addressing circuit in the display module circuit.
In order to realize the quiet control requirement that waits of shutting down, in described electric power management circuit, also include a primary processor, the set point that described modular power source managing chip presets the detected magnitude of voltage of its detection port and its inside compares, and then convert the high-low level signal to and export to described primary processor, by described primary processor to described main power source managing chip output control signal.
In order to finish complicated control, described main power source managing chip is connected communication with the modular power source managing chip by the I2C bus.
Technical characterictic in conjunction with above-mentioned electric power management circuit, the utility model has proposed a kind of television set again, its internal configurations has described electric power management circuit, wherein, described modular power source is the display module power supply in the television set, its detection port is by the voltage output end of drive circuit and/or addressing circuit in the bleeder circuit connection display module, and generate control signal corresponding according to detected magnitude of voltage and export to described main power source managing chip, and then realize switch control to main power source by described main power source managing chip.
Wherein, the detection port of described modular power source managing chip is its analog-to-digital conversion port, and the set point that detected magnitude of voltage and its inside are preset compares, and then generates the high-low level signal and export to primary processor; Described primary processor is when receiving the modular power source fault-signal that the modular power source managing chip sends, carry out various standby works of treatment such as quiet immediately, handle the back to main power source managing chip output control signal, cut off king's power supply relay, the control complete machine enters holding state.
Further, described main power source managing chip is connected communication with the modular power source managing chip by the I2C bus, finishes some complicated controls, as work such as increase output power of power supply.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by adopting double-deck powder source management mode, occur sending control signal to upper strata main power source management circuit when unusual at the lower module circuit, the notice upper strata cuts off main power source, the control complete machine enters standby or off-mode, thereby has effectively improved the complete machine reliability of operation; The quiet control of software when being applied to can also realize ac dump easily in the TV set circuit has reduced development cost, has saved manpower and materials, has shortened the construction cycle, has improved development efficiency.
Description of drawings
Fig. 1 is the electric power management circuit theory diagram that the utility model proposes.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Electric power management circuit of the present utility model adopts two-layer management mode, and the holistic management of complete machine power supply is finished on the upper strata, and lower floor finishes the power management of modular circuit; Controlled function such as standby, main power source break-make are realized on the upper strata, and lower floor monitors modular circuit, sends control signal to the upper strata when unusual, cut off the electricity supply in the notice upper strata, the standby of control complete machine.
Its primary structure comprises main power source, main power source managing chip and modular circuit, is included as the modular power source and the modular power source managing chip of modular circuit power supply in described modular circuit.Wherein, the measuring point to be checked in the detection port link block circuit of described modular power source managing chip, and generate control signal corresponding according to detection signal and export to described main power source managing chip; The switch control end of described main power source managing chip connects the switching circuit of main power source, and main power source is carried out switch control; The switch control end of described modular power source managing chip connects the switching circuit of described modular power source, the switch of control module power supply.
Described measuring point to be checked is set according to concrete test request concrete selection in modular circuit of developer.For TV set circuit, described modular circuit can be thought the display module circuit in the television set, and described measuring point to be checked can be the voltage output end of drive circuit or addressing circuit in the display module, and the utility model is not done concrete qualification to this.
Embodiment one, and the utility model is concrete structure and the operation principle that example is specifically set forth electric power management circuit with the plasma TV.As shown in Figure 1, plasma power supply adopts the design of two layer-managements, and the holistic management of complete machine power supply is finished on the upper strata, is finished by the main power source managing chip MCU1 on the signal-processing board.Lower floor finishes the power management of plasma module, is finished by the modular power source managing chip MCU2 on the module logic card.Standby, main power source on-off function are realized in the upper strata, and lower floor's article on plasma module monitors, sends control signal to the upper strata when unusual, cut off the electricity supply in the notice upper strata.Standby 5V power supply is adopted on the upper strata, and lower floor is powered by standby 3.3V.
Among Fig. 1, main power source managing chip MCU1 is the upper strata chip of power management, and the television set main power source is controlled, and can adopt model is the chip microcontroller of ATMEGA48V, has the online programming function, easy to use.Modular power source managing chip MCU2 is lower floor's chip of power management, can be provided with separately, also can be integrated among the rgb signal process chip MB87M8080.MB87M8080 is the high integrated process chip that FHP company releases, and carries microprocessor.Open five interfaces of MCU2: 1, receive the switch controlling signal of upper strata main power source, signal is exported to MCU2 from MCU1; 2, output module mains switch control signal, signal output to the switching circuit of modular power source from MCU2; 3, the detection signal of makeing mistakes of receiver module circuit, signal is exported to MCU2 by modular circuit; 4, notice tension management circuit when modular circuit breaks down, signal is defeated by the main process chip FLI8668 on upper strata by MCU2; 5, the I between MCU2 and the MCU1
2The C bus communication interface.
The startup and the shutoff of MCU1 control main power source, and switch controlling signal exported to first interface of MCU2, can select one of them GPIO mouth or ADC port among the MCU2 to realize.Described MCU2 is according to the start or the off signal that receive, by its second interface output high-low level control signal, control lower module power initiation or shutoff.Described second interface can select wherein one road GPI0 cause for gossip among the MCU2 existing.The addressing circuit and the drive circuit of described MCU2 control and monitoring modular power supply and plasma module, if detecting the addressing circuit of modular power source or plasma module and drive circuit state, the 3rd interface of MCU2 occurs when unusual, can send an abnormal signal to upper strata master's process chip FLI8668 immediately by its 4th interface (as the GPI0 mouth), the knife edge die block power supply is controlled the plasma module and is quit work simultaneously.Upper strata master's process chip FLI8668 is after receiving the abnormal signal that MCU2 sends, carry out various standbies processing such as quiet immediately, finish dealing with the back to high level standby signal of MCU1 transmission, and control MCU1 cuts off the relay of main power source, makes complete machine enter standby or off-mode.The 5th interface of MCU2 passes through I
2C bus and upper strata MCU1 carry out bus communication, finish some complicated controls, for example increase controls such as output power of power supply.Because the function and this patent relation of the 5th interface are little, do not remake here further and set forth.
Lower module power management chip MCU2 utilizes its analog-to-digital conversion port ADC as detection port, it is described the 3rd interface, connect the voltage output end of drive circuit in the plasma module or addressing circuit through bleeder circuit, perhaps simultaneously the output voltage of two circuit is detected.Described bleeder circuit can adopt resistance pressure-dividing network structure commonly used at present to come the magnitude of voltage of drive circuit or addressing circuit output is carried out the step-down sampling, and then the high-potential voltage conversion of signals of drive circuit or addressing circuit output become to meet the low-potential voltage signal that MCU2 analog-to-digital conversion port input current potential requires, output among the MCU2.
Described MCU2 determines the operating state of plasma module by the magnitude of voltage Vs that detects drive circuit in the plasma module.During operate as normal, Vs at 84V between the 88V.When MCU2 detects Vs and is lower than 70V; think that the plasma module breaks down; and then export control signal to modular power source by its second interface; turn-off the switching circuit in the modular power source; as parts such as switch relays; and then the driving voltage Vs and the addressing voltage Va of cut-out plasma module, the outage of control plasma module is shut down.
In order to occur in the work of plasma module when unusual, the control plasm TV enters complete machine standby or off-mode, to improve the reliability of television set work, described MCU2 is when receiving the abnormal signal of plasma modular circuit, send a high level fault signal by its 4th interface (GPIO mouth) to upper strata master's process chip FLI8668, main process chip FLI8668 is after receiving the high level signal that MCU2 sends, carry out the quiet standby processing that waits rapidly, and then to main power source output Opportunity awaiting control for linear signal, cut off the relay in the main power source, make whole set of television carry out holding state.
Adopt the foregoing circuit structure, the quiet control of software in the time that the television set ac dump can being realized easily.When television set carried out ac dump, MCU2 detected the speed of Vs power down generally less than one millisecond.When MCU2 detects Vs and is lower than 70V, cut off the driving voltage Vs and the addressing voltage Va of plasma module rapidly, and send a high level signal to main process chip FLI8668.Main process chip FLI8668 after receiving the high level signal that MCU2 sends, carry out rapidly quiet, finish operation such as image processing, the time of this process need is in 100ms; To main power source output standby signal, control the complete machine ac dump afterwards, generation of sonic boom has improved consumer's auditory effect when effectively having avoided the television set ac dump with this, helps to improve the complete machine quality of tv product.
Electric power management circuit of the present utility model has not only improved the fail safe and the reliability of tv product complete machine operation, and the quiet control of software when also having realized the television set ac dump simultaneously can be widely used in the TV set circuit of any model.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. an electric power management circuit comprises main power source, main power source managing chip and modular circuit, is included as the modular power source and the modular power source managing chip of modular circuit power supply in described modular circuit; It is characterized in that: the measuring point to be checked in the detection port link block circuit of described modular power source managing chip, and generate control signal corresponding according to detection signal and export to described main power source managing chip; The switch control end of described main power source managing chip connects the switching circuit of main power source, and main power source is carried out switch control; The switch control end of described modular power source managing chip connects the switching circuit of described modular power source, the switch of control module power supply.
2. electric power management circuit according to claim 1 is characterized in that: the detection port of described modular power source managing chip connects measuring point to be checked in the described modular circuit by bleeder circuit.
3. electric power management circuit according to claim 2 is characterized in that: the detection port of described modular power source managing chip is its analog-to-digital conversion port.
4. electric power management circuit according to claim 1 is characterized in that: described modular circuit is the display module circuit, and its measuring point to be checked is the voltage output end of drive circuit and/or addressing circuit in the display module circuit.
5. according to each described electric power management circuit in the claim 1 to 4, it is characterized in that: in described electric power management circuit, also include a primary processor, the set point that described modular power source managing chip presets the detected magnitude of voltage of its detection port and its inside compares, and then generate the high-low level signal and export to described primary processor, by described primary processor to described main power source managing chip output control signal.
6. electric power management circuit according to claim 4 is characterized in that: described main power source managing chip and modular power source managing chip pass through I
2The C bus connects communication.
7. television set, its internal configurations has electric power management circuit, comprises main power source, main power source managing chip in described electric power management circuit, is the modular power source and the modular power source managing chip of display module power supply; It is characterized in that: the detection port of described modular power source managing chip connects the voltage output end of drive circuit in the display module and/or addressing circuit by bleeder circuit, and generates control signal corresponding according to detected magnitude of voltage and export to described main power source managing chip; The switch control end of described main power source managing chip connects the switching circuit of main power source, and main power source is carried out switch control; The switch control end of described modular power source managing chip connects the switching circuit of described modular power source, the switch of control module power supply.
8. television set according to claim 7 is characterized in that: the detection port of described modular power source managing chip is its analog-to-digital conversion port.
9. according to claim 7 or 8 described television sets, it is characterized in that: in described electric power management circuit, also include a primary processor, the set point that described modular power source managing chip presets the detected magnitude of voltage of its detection port and its inside compares, and then convert the high-low level signal to and export to described primary processor, by described primary processor to described main power source managing chip output control signal.
10. television set according to claim 9 is characterized in that: described main power source managing chip and modular power source managing chip pass through I
2The C bus connects communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200197208U CN201038741Y (en) | 2007-03-19 | 2007-03-19 | Power management circuit and TV possessing the management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200197208U CN201038741Y (en) | 2007-03-19 | 2007-03-19 | Power management circuit and TV possessing the management circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201038741Y true CN201038741Y (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200197208U Expired - Fee Related CN201038741Y (en) | 2007-03-19 | 2007-03-19 | Power management circuit and TV possessing the management circuit |
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| Country | Link |
|---|---|
| CN (1) | CN201038741Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914987A (en) * | 2012-11-03 | 2013-02-06 | 福州福大海矽微电子有限公司 | Signal distribution isolation circuit applied to infrared signal standby control |
| CN103746431A (en) * | 2014-01-23 | 2014-04-23 | 青岛海信移动通信技术股份有限公司 | Dual-PMU (power management unit) power supplying system, power supplying method and mobile terminal |
| CN104155880A (en) * | 2013-05-15 | 2014-11-19 | 深圳富泰宏精密工业有限公司 | Electronic apparatus and application method thereof |
| CN108933425A (en) * | 2018-07-27 | 2018-12-04 | 苏州浪潮智能软件有限公司 | A kind of protection circuit, protection system and guard method |
-
2007
- 2007-03-19 CN CNU2007200197208U patent/CN201038741Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914987A (en) * | 2012-11-03 | 2013-02-06 | 福州福大海矽微电子有限公司 | Signal distribution isolation circuit applied to infrared signal standby control |
| CN104155880A (en) * | 2013-05-15 | 2014-11-19 | 深圳富泰宏精密工业有限公司 | Electronic apparatus and application method thereof |
| CN103746431A (en) * | 2014-01-23 | 2014-04-23 | 青岛海信移动通信技术股份有限公司 | Dual-PMU (power management unit) power supplying system, power supplying method and mobile terminal |
| CN108933425A (en) * | 2018-07-27 | 2018-12-04 | 苏州浪潮智能软件有限公司 | A kind of protection circuit, protection system and guard method |
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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: 20080319 Termination date: 20110319 |