Power supply circuit, power control circuit, power supply circuit and integrated circuit board

Abstract

The invention discloses a power supply circuit, a power control circuit, a power supply circuit and an integrated circuit board. The power supply circuit comprises a remote control transceiver module used for receiving a remote control signal; and the power supply control module is used for outputting a power supply voltage signal to the power control module when the remote control signal represents startup so as to enable the power control module to work in an electrified manner, and stopping outputting the power supply voltage signal so as to enable the power control module to stop working when the remote control signal represents shutdown. The power supply control module outputs the power supply voltage signal to the power control module according to the remote control signal representing startup so as to supply power to the power control module, and when the remote control signal represents shutdown, the power supply control module stops outputting the power supply voltage signal, so that the power control module stops working; therefore, the power control module in the power supply circuit and all loads at the rear stage of the power control module are turned off, and the standby power consumption is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a power supply circuit, a power control circuit, a power supply circuit and an integrated circuit board. Background Art

[0002] Current television (TV) driver boards can convert AC mains power into DC power to power a TV mainboard and backlight light-emitting diodes (LEDs).

[0003] With the increasing requirements for energy conservation and efficiency improvement, the conventional TV standby power consumption of 0.5W has gradually lost its advantage. How to achieve ultra-low standby power consumption such as 0.15W is a difficult problem that needs to be solved urgently.

[0004] In the related technology, a standby power consumption of 0.3W can be achieved by optimizing the power supply circuit. However, due to the operating load of the TV mainboard when it is shut down and the operating load of the power supply part when it is in standby mode, such as the influence of the power control chip, power device loss, absorption circuit loss, etc., the current power supply circuit still cannot achieve the standby power consumption requirement of less than 0.15W or even lower. Summary of the invention

[0005] In view of the above problems, the present application provides a power supply circuit, a power control circuit, a power supply circuit and an integrated circuit board to solve the above technical problems.

[0006] In a first aspect, the present application provides a power supply circuit for supplying power to a power control module in a power supply circuit, the power supply circuit comprising:

[0007] A remote control transceiver module, used for receiving remote control signals;

[0008] The power supply control module is connected to the remote control transceiver module and is used to output a power supply voltage signal to the power control module when the remote control signal indicates power on, so that the power control module can work with power on, and to stop outputting the power supply voltage signal when the remote control signal indicates power off, so that the power control module can stop working.

[0009] In a possible implementation of the present application, the power supply control module includes an auxiliary power supply unit and an auxiliary power supply control unit, and the auxiliary power supply control unit is respectively connected to the auxiliary power supply unit, the remote control transceiver module and the power control module;

[0010] An auxiliary power supply unit, used to receive a rectified voltage signal, and convert the rectified voltage signal into a first voltage signal and output it to the auxiliary power supply control unit to supply power to the auxiliary power supply control unit;

[0011] The auxiliary power supply control unit is used to generate a power supply voltage signal according to the first voltage signal and output it to the power control module when the remote control signal represents power on, and to stop generating the power supply voltage signal when the remote control signal represents power off.

[0012] In a possible implementation of the present application, the auxiliary power supply control unit includes a remote control control chip and a logic control unit, the power input end of the remote control control chip is respectively connected to the output end of the auxiliary power supply unit and the first end of the logic control unit, the control input end of the remote control control chip is connected to the output end of the remote control transceiver module, the control output end of the remote control chip is connected to the second end of the logic control unit, and the third end of the logic control unit is connected to the power control module;

[0013] A remote control chip, used for adjusting a first control signal output to a logic control unit according to a remote control signal;

[0014] The logic control unit is used to be turned on or off according to the first control signal, and when turned on, obtains a power supply voltage signal based on the first voltage signal and outputs it to the power control module.

[0015] In a possible implementation of the present application, the logic control unit includes a first switch tube and a first resistance circuit, the control end of the first switch tube is respectively connected to the control output end of the remote control chip and the first end of the first resistance circuit, the first end of the first switch tube is connected to the output end of the auxiliary power supply unit, the second end of the first switch tube is connected to the power control module, and the second end of the first resistance circuit is connected to the ground electrode.

[0016] In a possible implementation of the present application, the auxiliary power supply unit includes a step-down conversion circuit.

[0017] In a possible implementation of the present application, the auxiliary power supply unit includes a second resistance circuit, a first electrolytic capacitor and a first voltage-stabilizing diode, the first end of the second resistance circuit is connected to the output end of the rectified voltage signal, the second end of the second resistance circuit is respectively connected to the first end of the first electrolytic capacitor, the cathode of the first voltage-stabilizing diode and the auxiliary power supply control unit, and the second end of the first electrolytic capacitor and the anode of the first voltage-stabilizing diode are connected to the ground electrode.

[0018] In a possible implementation of the present application, the remote control transceiver module includes at least one of an infrared receiving module, a Bluetooth receiving module, and a network optical fiber receiving module.

[0019] On the second aspect, the present application also provides a power control circuit for controlling the operation of a power conversion module in a power supply circuit. The power control circuit includes a power control module and the above-mentioned power supply circuit. The power supply circuit is used to supply power to the power control module. The power control module is connected to the power conversion module and is used to output a second control signal to the power conversion module to control the operation of the power conversion module.

[0020] On the third aspect, the present application also provides a power supply circuit, including a power conversion module and the above-mentioned power control circuit, the power control circuit is used to control the operation of the power conversion module, and the power conversion module is used to convert the rectified voltage signal into a target voltage signal and output it to a load to power the load.

[0021] In a fourth aspect, the present application also provides an integrated circuit board, which includes a circuit board body and the above-mentioned power supply circuit arranged on the circuit board body.

[0022] From the above content, it can be concluded that the present application has the following beneficial effects:

[0023] The power supply circuit provided in the present application outputs a power supply voltage signal to the power control module according to a remote control signal representing startup, so as to supply power to the power control module. When the remote control signal represents shutdown, the power supply control module stops outputting the power supply voltage signal, so that the power control module stops working, thereby shutting down the power control module and all the loads of its subsequent stages in the power supply circuit, avoiding the loss of the running load of the TV mainboard when shutting down and the running load of the power supply part when in standby mode, and greatly reducing the standby power consumption.

[0024] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a module schematic diagram of a main power circuit in the related art;

[0027] Figure 2 It is a module schematic diagram of a power conversion circuit in the related art;

[0028] Figure 3 It is a circuit structure schematic diagram of a power supply circuit in the related art;

[0029] Figure 4 It is a structural schematic diagram of a power supply circuit provided in an embodiment of the present application;

[0030] Figure 5 is a structural schematic diagram of a power supply control module provided in an embodiment of the present application;

[0031] Figure 6is a structural schematic diagram of an auxiliary power supply control unit provided in an embodiment of the present application;

[0032] Figure 7 It is a structural schematic diagram of a logic control unit provided in an embodiment of the present application;

[0033] Figure 8 It is a circuit structure diagram of a logic control unit provided in an embodiment of the present application;

[0034] Fig. 9 is a structural schematic diagram of an auxiliary power supply unit provided in an embodiment of the present application;

[0035] Fig.10 is a circuit structure diagram of an auxiliary power supply unit provided in an embodiment of the present application;

[0036] Fig.11 is a circuit structure schematic diagram of a power supply circuit provided in an embodiment of the present application;

[0037] Fig.12 is a structural schematic diagram of a power control circuit provided in an embodiment of the present application;

[0038] Fig.13 is a structural schematic diagram of a power supply circuit provided in an embodiment of the present application;

[0039] Fig.14 It is a circuit structure schematic diagram of a power supply circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0042] In the embodiments of the present application, it should be noted that, in this article, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0043] Moreover, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of more restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or device comprising the element.

[0044] In the description of the embodiments of the present application, words such as "example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of the present application is not to be interpreted as being more preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to present relative concepts in a clear manner.

[0045] It should be noted that in the embodiments of the present application, "connection" can be understood as electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be either a direct connection between A and B or an indirect connection between A and B through one or more other electrical components.

[0046] Before introducing the power supply circuit, power control circuit, power supply circuit and integrated circuit board of the present application, the relevant background information of the embodiments of the present application is first introduced.

[0047] like Figure 1 As shown, it is a module schematic diagram of the main power circuit in the related technology. The main power circuit can convert the AC mains into DC power through an electromagnetic interference (EMI) filter, a rectifier bridge and a digital-to-analog converter (AC / DC) and power the TV mainboard and LED backlight driver at the same time.

[0048] With the increasing requirements for energy saving and efficiency improvement, the current conventional TV standby power consumption of 0.5W has gradually lost its advantage, and some manufacturers require ultra-low standby power consumption, such as within 0.15W. However, the current commonly used circuits generally have a standby power consumption of less than 0.5W, which can be reduced to 0.3W through circuit optimization, and cannot meet the standby power consumption requirements of less than 0.15W or even lower.

[0049] like Figure 2As shown, it is a module schematic diagram of a power conversion circuit in the related art, wherein the remote control transceiver module is used to receive infrared or Bluetooth commands issued by the remote control head to control the TV module to turn on or standby. Since the TV module still maintains some functions in standby mode, the TV module still has some load operation in standby mode. At present, the load of the TV module in standby mode in the industry is generally between 10-20mA, and the power consumption is about 120-240mW (calculated based on the output power supply of 12V). In addition, combined with the fact that the standby efficiency of the main power circuit is generally only 50%, the output power is calculated to be about 240-480mW. In addition, the power supply operation also consumes 40-80mW, so the standby power consumption will exceed 0.5W.

[0050] like Figure 3 As shown, it is a circuit structure schematic diagram of a power supply circuit in the related art, wherein the Vbridge voltage is the output voltage obtained after the AC mains voltage is rectified, and the transformer TB101, the MOS tube QB101, the diode DB101, the diode DB103, the electrolytic capacitor EB1, the electrolytic capacitor EB101, the electrolytic capacitor EB105 and the resistor RB140 together constitute a power conversion module, outputting the VBL voltage to power the backlight module and outputting the 12V voltage to power the TV module; the resistor RB101, the resistor RB102, the capacitor CB102, the electrolytic capacitor EB106, the diode DB104 and the resistor RB115 constitute an auxiliary power supply module to power the control chip UB101, Figure 3 The other components in the circuit shown constitute a power control module.

[0051] according to Figure 3 It can be seen that the current TV standby power consumption is mainly affected by 1. the operating load of the TV motherboard when it is turned off, and 2. the operating load of the power supply part in standby mode, such as the power control chip, power device loss, absorption circuit loss, etc., resulting in the power supply circuit still unable to achieve the standby power consumption requirement of less than 0.15W or even lower.

[0052] Based on this, the embodiments of the present application provide a power supply circuit, a power control circuit, a power supply circuit and an integrated circuit board, which are described in detail below.

[0053] See also Figure 4 , Figure 4 It is a structural schematic diagram of the power supply circuit provided in an embodiment of the present application. The power supply circuit 100 can be used to power the power control module 210 in the power supply circuit 200. The power supply circuit 100 may include a remote control transceiver module 110 and a power supply control module 120. The power supply control module 120 is connected to the remote control transceiver module 110.

[0054] Wherein, the remote control transceiver module 110 can be used to receive remote control signals;

[0055] The power supply control module 120 can be used to output a power supply voltage signal to the power control module 210 when the remote control signal represents power on, so that the power control module 210 can work with power on, and stop outputting the power supply voltage signal when the remote control signal represents power off, so that the power control module 210 can stop working.

[0056] In an embodiment of the present application, the remote control transceiver module 110 can be used to receive a remote control signal sent from the outside and transmit the remote control signal to the power supply control module 120. The power supply control module 120 can determine whether to output a power supply voltage signal to the power control module 210 based on the remote control signal, that is, determine whether the power control module 210 needs to be powered on to work based on the remote control signal.

[0057] Specifically, if the remote control signal represents power-on, the power supply control module 120 determines that the power control module 210 needs to work with power, and thus can output a power supply voltage signal to the power control module 210 to enable the power control module 210 to work with power; conversely, if the remote control signal represents power-off, the power supply control module 120 can determine that the power control module 210 does not need to work, and can shut down the power control module 210 to reduce standby power consumption. Therefore, the power supply control module 120 can stop outputting the power supply voltage signal to the power control module 210 to enable the power control module 210 to stop working.

[0058] Combination Figure 3 It can be known that the power control module 210 can control the operation of the power conversion module in the power supply circuit 200, and the power conversion module is connected to a load such as a TV module and a backlight module at the rear stage. In the related technology, when in standby mode, the power control module 210, the power conversion module, the TV module and the backlight module are still in a powered state, so there will be standby loss.

[0059] In the embodiment of the present application, when the remote control signal indicates shutdown, the power supply control module 120 does not output a power supply voltage signal, and the power control module 210 is powered off. When the power control module 210 is powered off, the power conversion module is turned off, and all loads such as the TV module and backlight module at the rear stage of the power conversion module are turned off, thereby achieving the purpose of reducing standby power consumption.

[0060] The power supply circuit 100 provided in the present application outputs a power supply voltage signal to the power control module 210 according to the remote control signal representing startup through the power supply control module 120, so as to supply power to the power control module 210, and when the remote control signal represents shutdown, the power supply control module 120 stops outputting the power supply voltage signal, so that the power control module 210 stops working, thereby shutting down the power control module 210 and all the loads of its subsequent stages in the power supply circuit 200, avoiding the loss of the running load of the TV mainboard when shutting down and the running load of the power supply part when in standby mode, thereby greatly reducing the standby power consumption.

[0061] Next, continue to Figure 4 Each unit module shown and the specific implementation methods that may be used in practical applications are explained in detail.

[0062] See also Figure 5 In some embodiments of the present application, the power supply control module 120 may include an auxiliary power supply unit 121 and an auxiliary power supply control unit 122, and the auxiliary power supply control unit 122 may be connected to the auxiliary power supply unit 121, the remote control transceiver module 110 and the power control module 210 respectively.

[0063] The auxiliary power supply unit 121 may be configured to receive a rectified voltage signal, and convert the rectified voltage signal into a first voltage signal and output it to the auxiliary power supply control unit 122 to supply power to the auxiliary power supply control unit 122 .

[0064] The auxiliary power supply control unit 122 can be used to generate a power supply voltage signal according to the first voltage signal and output it to the power control module 210 when the remote control signal represents power on, and stop generating the power supply voltage signal when the remote control signal represents power off.

[0065] In an embodiment of the present application, the auxiliary power supply unit 121 can be connected to the output end of the rectified voltage signal, such as the output end of the rectifier bridge, to receive the rectified voltage absorption signal, and can also convert the rectified voltage signal into a first voltage signal that is adapted to the working voltage of the auxiliary power supply control unit 122, and output the first voltage signal to the auxiliary power supply control unit 122, thereby powering the auxiliary power supply control unit 122.

[0066] When the auxiliary power supply control unit 122 receives a remote control signal representing startup, it can generate a power supply voltage signal that is adapted to the working voltage of the power control module 210 based on the first voltage signal, and output the power supply voltage signal to the power control module 210, thereby supplying power to the power control module 210; conversely, when the auxiliary power supply control unit 122 receives a remote control signal representing shutdown, it can stop generating the power supply voltage signal, so that the power control module 210 is shut down due to the absence of the power supply voltage signal.

[0067] like Figure 6 As shown, in some embodiments of the present application, the auxiliary power supply control unit 122 may include a remote control control chip U1 and a logic control unit 1221, the power input end of the remote control control chip U1 is respectively connected to the output end of the auxiliary power supply unit 121 and the first end of the logic control unit 1221, the control input end of the remote control control chip U1 is connected to the output end of the remote control transceiver module 110, the control output end of the remote control control chip U1 is connected to the second end of the logic control unit 1221, and the third end of the logic control unit 1221 is connected to the power control module 210.

[0068] The remote control chip U1 can be used to adjust the first control signal output to the logic control unit 1221 according to the remote control signal; the logic control unit 1221 can be used to turn on or off according to the first control signal, and when turned on, obtain a power supply voltage signal based on the first voltage signal and output it to the power control module 210.

[0069] In an embodiment of the present application, the remote control chip U1 can be configured to output a high-level first control signal when the remote control signal represents power on, and to output a low-level first control signal when the remote control signal represents power off; the logic control unit 1221 can be turned on in response to the high-level first control signal, and obtain a power supply voltage signal based on the first voltage signal and output it to the power control module 210; if the logic control unit 1221 receives a low-level first control signal, it can be disconnected, so that no power supply voltage signal is output to the power control module 210.

[0070] It can be understood that in some other examples, the remote control chip U1 can also be configured to output a low-level first control signal when the remote control signal represents power on, and output a high-level first control signal when the remote control signal represents power off; the logic control unit 1221 can be turned on in response to the low-level first control signal, and obtain a power supply voltage signal based on the first voltage signal and output it to the power control module 210; if the logic control unit 1221 receives a high-level first control signal, it can be disconnected, so that no power supply voltage signal is output to the power control module 210.

[0071] like Figure 7 As shown, in some embodiments of the present application, the logic control unit 1221 may include a first switch tube Q1 and a first resistance circuit, the control end of the first switch tube Q1 is respectively connected to the control output end of the remote control chip U1 and the first end of the first resistance circuit, the first end of the first switch tube Q1 is connected to the output end of the auxiliary power supply unit 121, the second end of the first switch tube Q1 is connected to the power control module 210, and the second end of the first resistance circuit is connected to the ground electrode SGND.

[0072] In an embodiment of the present application, the first switch tube Q1 can be a controllable switch tube such as a triode, an insulated gate bipolar transistor (IGBT), a metal-oxide-semiconductor field-effect transistor (MOSFET), etc., and the first resistance circuit can include one or more resistors connected in series.

[0073] like Figure 8 As shown, in a specific implementation, the first switch tube Q1 is a transistor, the first resistance circuit includes a first resistor R1, the power input terminal IN of the remote control chip U1 is connected to the auxiliary power supply unit 121, and receives the first voltage signal VCC1 output by the auxiliary power supply unit 121, the control input terminal HW of the remote control chip U1 is connected to the remote control signal output terminal of the remote control transceiver module 110, and receives the remote control signal, the control output terminal GATE of the remote control chip U1 is respectively connected to the gate of the first transistor Q1 and the first end of the first resistor R1, the collector of the first transistor Q1 is connected to the power input terminal IN of the remote control chip U1, and the emitter of the first transistor Q1 is connected to the power control module 210, and outputs the power supply voltage signal VCC.

[0074] When the remote control signal is set to be high level, it indicates power on, and when the remote control signal is set to be low level, it indicates power off. Then, when the control input terminal HW of the remote control chip U1 receives a high level remote control signal, the remote control chip U1 can respond to the high level remote control signal, and output a high level first control signal from the control output terminal GATE to the gate of the first switch tube Q1. The first switch tube Q1 is turned on in response to the high level first control signal, so that the first voltage signal VCC1 output by the auxiliary power supply unit 121 is subjected to the tube voltage drop of the first switch tube Q1, and the power supply voltage signal VCC is obtained and output to the power control module 210;

[0075] When the control input terminal HW of the remote control chip U1 receives a low-level remote control signal, the remote control chip U1 can respond to the low-level remote control signal and output a low-level first control signal from the control output terminal GATE to the gate of the first switch tube Q1, so that the first switch tube Q1 is turned off, thereby breaking the circuit and no power supply voltage signal VCC is output to the power control module 210.

[0076] In some embodiments of the present application, the auxiliary power supply unit 121 may include any existing step-down conversion circuit, such as a high-efficiency BUCK step-down circuit. The remote control transceiver module 110 may include at least one of an infrared receiving module, a Bluetooth receiving module, and a network optical fiber receiving module, which may be determined according to the actual application scenario and is not limited here.

[0077] like Fig. 9 As shown, in some embodiments of the present application, the auxiliary power supply unit 121 may include a second resistance circuit, a first electrolytic capacitor E1 and a first voltage-stabilizing diode D1, the first end of the second resistance circuit is connected to the output end of the rectified voltage signal, the second end of the second resistance circuit is respectively connected to the first end of the first electrolytic capacitor E1, the cathode of the first voltage-stabilizing diode D1 and the auxiliary power supply control unit 122, and the second end of the first electrolytic capacitor E1 and the anode of the first voltage-stabilizing diode D1 are connected to the ground electrode SGND.

[0078] It is understood that the second resistance circuit may include one or more resistors connected in series, such as Fig.10 As shown, the second resistor circuit includes a second resistor R2 and a third resistor R3 connected in series, wherein the first end of the second resistor R2 is connected to the output end of the rectified voltage signal Vbridge, and the second end of the third resistor R3 is connected to the auxiliary power supply control unit 122 to output the first voltage signal VCC1.

[0079] In the embodiment of the present application, the rectified voltage signal Vbridge is stepped down by the second resistor circuit and stabilized by the first voltage regulator diode D1 to obtain a first voltage signal VCC1 which is output to the auxiliary power supply control unit 122 to supply power to the auxiliary power supply control unit 122 and to generate a power supply voltage signal.

[0080] See also Fig.11 , is a circuit structure diagram of a power supply circuit provided in an embodiment of the present application. In the embodiment of the present application, after the rectified voltage signal Vbridge is stepped down by the second resistor R2 and the third resistor R3 and stabilized by the first voltage stabilizing diode D1, a first voltage signal VCC1 is obtained and output to the power input terminal IN of the remote control chip U1. When the control input terminal HW of the remote control chip U1 receives a remote control signal representing power-on, the remote control chip U1 can respond to the remote control signal and output a high-level first control signal from the control output terminal GATE to the gate of the first switch tube Q1. The first switch tube Q1 is turned on in response to the high-level first control signal, so that the first voltage signal VCC1 at the collector of the first switch tube Q1 is stepped down by the turned-on first switch tube Q1 to generate a power supply voltage signal VCC and output to the power control module 210;

[0081] When the control input terminal HW of the remote control chip U1 receives a remote control signal indicating shutdown, the remote control chip U1 can respond to the remote control signal and output a low-level first control signal from the control output terminal GATE to the gate of the first switch tube Q1, so that the first switch tube Q1 is turned off, thereby disconnecting the power supply circuit 100 and generating no power supply voltage signal VCC, so that the power control module 210 is turned off.

[0082] The power supply circuit of the embodiment of the present application has a simple structure, simple logic control, and low overall cost. When shutting down, no power supply voltage signal VCC is output to the power control module 210, so the power control module 210 is turned off, and then the power conversion module in the power supply circuit 200 is turned off, and the subsequent loads of the power conversion module such as the TV module, the backlight module, etc. are all turned off due to power failure and enter deep standby, which minimizes the standby loss as much as possible and meets the energy-saving requirements of ultra-low standby power consumption.

[0083] On the basis of the above embodiments, the present application also provides a power control circuit for controlling the operation of the power conversion module 220 in the power supply circuit 200. Fig.12 As shown, the power control circuit 300 may include a power control module 210 and Figures 4 to 11 The power supply circuit 100 in any corresponding embodiment can be used to supply power to the power control module 210, and the power control module 210 is connected to the power conversion module 220 to output a second control signal to the power conversion module 220 to control the operation of the power conversion module 220.

[0084] In an embodiment of the present application, when the power is turned on, the power supply circuit 100 can output a power supply voltage signal to power the power control module 210, and the power control module 210 can output a high-level second control signal to the power conversion module 220 to drive the power conversion module 220 to work; when the power is turned off, the power supply circuit 100 has no power supply voltage signal output, the power control module 210 is powered off and stops working, so that no second control signal is output to the power conversion module 220, and the power conversion module 220 is turned off, that is, stops working, so that the load at the subsequent stage is powered off and shut down, thereby reducing standby power consumption.

[0085] Based on the above embodiments, Fig.13 As shown, an embodiment of the present application also provides a power supply circuit, which power supply circuit 200 may include a power conversion module 220 and the above-mentioned power control circuit 300, and the power control circuit 300 can be used to control the operation of the power conversion module 220, and the power conversion module 220 can be used to convert the rectified voltage signal into a target voltage signal and output it to the load 400 to power the load 400.

[0086] In an embodiment of the present application, when the power is turned on, the power control circuit 300 can output a power supply voltage signal to power the power control module 210, and the power control module 210 can output a high-level second control signal to the power conversion module 220 to drive the power conversion module 220 to work, and convert the rectified voltage signal into a target voltage signal and output it to the load 400 to power the load 400; when the power is turned off, the power control circuit 300 stops working due to power failure and no second control signal is output, so no second control signal is output to the power conversion module 220, the power conversion module 220 stops working, and the subsequent loads all stop working, thereby reducing the standby loss of the entire circuit, thereby effectively reducing the standby power consumption of the circuit.

[0087] like Fig.14 As shown, the power control module 210 includes a control chip U2 and its peripheral components, and the power conversion module 220 includes a transformer T1, a second switch tube Q2, a fourth diode D4 and a fifth diode D5, etc. When the power is turned on, the power supply circuit 100 outputs a power supply voltage signal VCC to the power supply end of the control chip U2, and the control output end GATE of the control chip U2 outputs a high-level second control signal to the second switch tube Q2. The second switch tube Q2 is turned on in response to the high-level second control signal, and the branch path where the transformer T1 is located starts to work, and converts the rectified voltage signal Vbridge into a target voltage signal output adapted to the load. In this embodiment, the load includes a TV module and a backlight module. Therefore, the target voltage signal includes a first target voltage signal VBL adapted to the backlight module and a 12V second target voltage signal adapted to the TV module, that is, the first target voltage signal VBL is output to power the backlight module, and the 12V second target voltage signal is output to power the TV module, and the circuit works normally.

[0088] When shutting down, the power supply circuit 100 does not output the power supply voltage signal VCC to the power supply terminal of the control chip U2, the control chip U2 is turned off, the second switch tube Q2 is turned off, the branch where the transformer T1 is located is disconnected, and the transformer T1 stops working, so there is no first target voltage signal VBL to power the backlight module, and no 12V second target voltage signal to power the TV module. The backlight module and the TV module are completely powered off, which greatly reduces the standby loss of the entire circuit, allowing the circuit to be included in deep standby, thereby minimizing standby power consumption and meeting energy-saving requirements.

[0089] It can be understood that the power circuit of the present application can be applied not only to the application scenario of TV products, but also to other scenarios with similar deep standby requirements.

[0090] On the basis of the above-mentioned embodiment, the embodiment of the present application further provides an integrated circuit board, which may include a circuit board body and a power supply circuit as described above disposed on the circuit board body. The integrated circuit board may be a microcircuit, a microchip, a wafer / chip, and the chip may be, but is not limited to, a system-on-chip (SOC), a system-in-package (SIP) chip, etc.

[0091] Since the integrated circuit board is provided with the power supply circuit of the above embodiment, it has all the beneficial effects of the power supply circuit 200 in any of the above embodiments, which will not be described in detail here.

[0092] It can be understood that the integrated circuit board can be applied to various electronic devices, which may be but not limited to TV devices, smart wearable devices, mobile terminal devices, smart home devices, etc.

[0093] Among them, smart wearable devices include but are not limited to smart watches, smart bracelets, and cervical massagers. Mobile terminals include but are not limited to smart phones, laptops, tablets, and point of sales terminals (POS). Smart home devices include but are not limited to smart sweepers and smart lights.

[0094] Since the electronic device is provided with the power supply circuit 200 of the above embodiment, it has all the beneficial effects of the power supply circuit 100 in any of the above embodiments, which will not be described in detail here.

[0095] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A power supply circuit, characterized in that: Used to supply power to a power control module in a power supply circuit, the power supply circuit comprising: A remote control transceiver module, used for receiving remote control signals; The power supply control module is connected to the remote control transceiver module and is used to output a power supply voltage signal to the power control module when the remote control signal indicates power on, so that the power control module works with power on, and to stop outputting the power supply voltage signal when the remote control signal indicates power off, so that the power control module stops working.

2. The power supply circuit according to claim 1, characterized in that: The power supply control module includes an auxiliary power supply unit and an auxiliary power supply control unit, and the auxiliary power supply control unit is respectively connected to the auxiliary power supply unit, the remote control transceiver module and the power control module; The auxiliary power supply unit is used to receive a rectified voltage signal, and convert the rectified voltage signal into a first voltage signal and output it to the auxiliary power supply control unit to supply power to the auxiliary power supply control unit; The auxiliary power supply control unit is used to generate the power supply voltage signal according to the first voltage signal and output it to the power control module when the remote control signal represents power on, and to stop generating the power supply voltage signal when the remote control signal represents power off.

3. The power supply circuit according to claim 2, characterized in that: The auxiliary power supply control unit includes a remote control control chip and a logic control unit, the power input end of the remote control control chip is respectively connected to the output end of the auxiliary power supply unit and the first end of the logic control unit, the control input end of the remote control control chip is connected to the output end of the remote control transceiver module, the control output end of the remote control chip is connected to the second end of the logic control unit, and the third end of the logic control unit is connected to the power control module; The remote control chip is used to adjust the first control signal output to the logic control unit according to the remote control signal; The logic control unit is used to be turned on or off according to the first control signal, and when turned on, obtain the supply voltage signal based on the first voltage signal and output it to the power control module.

4. The power supply circuit according to claim 3, characterized in that: The logic control unit includes a first switch tube and a first resistance circuit, the control end of the first switch tube is respectively connected to the control output end of the remote control chip and the first end of the first resistance circuit, the first end of the first switch tube is connected to the output end of the auxiliary power supply unit, the second end of the first switch tube is connected to the power control module, and the second end of the first resistance circuit is connected to the ground electrode.

5. The power supply circuit according to claim 2, characterized in that: The auxiliary power supply unit includes a step-down conversion circuit.

6. The power supply circuit according to claim 2, characterized in that: The auxiliary power supply unit includes a second resistance circuit, a first electrolytic capacitor and a first voltage-stabilizing diode. The first end of the second resistance circuit is connected to the output end of the rectified voltage signal, the second end of the second resistance circuit is respectively connected to the first end of the first electrolytic capacitor, the cathode of the first voltage-stabilizing diode and the auxiliary power supply control unit, and the second end of the first electrolytic capacitor and the anode of the first voltage-stabilizing diode are connected to the ground electrode.

7. The power supply circuit according to any one of claims 1 to 6, characterized in that: The remote control transceiver module includes at least one of an infrared receiving module, a Bluetooth receiving module and a network optical fiber receiving module.

8. A power control circuit, characterized in that: Used to control the operation of a power conversion module in a power supply circuit, the power control circuit includes a power control module and a power supply circuit as described in any one of claims 1 to 7, the power supply circuit is used to power the power control module, the power control module is connected to the power conversion module, and is used to output a second control signal to the power conversion module to control the operation of the power conversion module.

9. A power supply circuit, characterized in that: It comprises a power conversion module and a power control circuit as described in claim 8, wherein the power control circuit is used to control the operation of the power conversion module, and the power conversion module is used to convert a rectified voltage signal into a target voltage signal and output it to a load to power the load.

10. An integrated circuit board, characterized in that: The invention comprises a circuit board body and the power supply circuit as claimed in claim 9 arranged on the circuit board body.

Images