Low-power-consumption remote controller circuit for frequency converter

Abstract

The utility model relates to the technical field of low-power-consumption circuits, in particular to a low-power-consumption remote controller circuit for a frequency converter, which comprises a power input circuit, a pull-up resistor R1, a pull-down resistor R21, a first boost low-power-consumption power converter and a second boost low-power-consumption power converter. The first boost type low-power-consumption power converter and the second boost type low-power-consumption power converter are connected to the power input circuit. The second boost type low-power-consumption power converter is connected with the power input circuit through a pull-up resistor R1, and the first boost type low-power-consumption power converter is grounded through a pull-down resistor R21. According to the utility model, the main control unit can control the closing of the first boost type low-power-consumption power converter through the enable signal, so that the dynamic management of the power consumption of the module supplied by the first boost type low-power-consumption power converter is realized, and the power consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to low power consumption circuit technical field, concretely is a low power consumption remote controller circuit for frequency converter. BACKGROUND

[0002] The remote controller powered by the battery needs to be as low power consumption as possible to prolong the endurance time of the product. The current conventional method is to use the battery to directly power the system, but the following problems may exist:

[0003] On the one hand, since the power supply is not distributed and managed, the unit circuit directly powered by the battery is in a continuous working state, and cannot be started or hibernated on demand, so the overall power consumption of the system is relatively high.

[0004] On the other hand, since the minimum working voltage of the system is usually higher than the cut-off discharge voltage of the battery, the system may stop working before the battery reaches the cut-off discharge voltage, causing the battery to still have some remaining power when the system is shut down. Obviously, the energy of the battery cannot be fully utilized, ultimately leading to a shorter overall endurance time of the product.

[0005] Therefore, there is an urgent need for a low power consumption remote controller circuit for frequency converter to greatly improve the endurance of the product. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the problems in the prior art, the utility model aims to provide a low power consumption remote controller circuit for frequency converter, which reduces power consumption and solves the problem that the system cannot work normally when the battery voltage is lower than 2.2V in the prior art, and greatly improves the endurance of the product.

[0007] To achieve the above object, the utility model provides the following technical scheme: a low power consumption remote controller circuit for frequency converter, comprising a power input circuit, a pull-up resistor R1, a pull-down resistor R21, a first boost type low power consumption power converter and a second boost type low power consumption power converter; the first boost type low power consumption power converter and the second boost type low power consumption power converter are connected to the power input circuit; the enable signal of the second boost type low power consumption power converter is connected to the power input circuit through the pull-up resistor R1, and the enable signal of the first boost type low power consumption power converter is grounded through the pull-down resistor R21.

[0008] The utility model further sets up: first boost type low -power supply converter including control chip U5, electric capacity C19, electric capacity C20, electric capacity C21, resistance R8, resistance R9 and inductance L4, one end of electric capacity C19 connects control chip U5's VIN pin, and the other end ground connection, one end of resistance R9 ground connection, the other end connects resistance R8, and the one end of resistance R8 far away from resistance R9 is connected at control chip U5's VOUT pin, and the FB pin of control chip U5 is connected between resistance R8 and resistance R9, control chip U5's VOUT pin still connects electric capacity C20, electric capacity C21 respectively, and the GND pin of electric capacity C20, electric capacity C21 and control chip U5 all ground connection,

[0009] The VIN pin of the control chip U5 is connected to the second boost type low-power supply converter and the power input circuit respectively.

[0010] The utility model further sets up: the EN pin of control chip U5 connects external main control unit, and one end of pull -down resistance R21 is accessed between the EN pin of control chip U5 and external main control unit, and the other end ground connection.

[0011] The utility model further sets up: one end of inductance L4 connects control chip U5's VIN pin, and the other end connects control chip U5's SW pin.

[0012] The utility model further sets up: one end of inductance L1 is connected at control chip U5's VOUT pin, and the other end of inductance L1 connects power output end VCC3. Inductance L1 plays the role of filtering.

[0013] The utility model further sets up: second boost type low -power supply converter including control chip U3, electric capacity C14, electric capacity C17, electric capacity C18, resistance R6, resistance R7 and inductance L2, one end of electric capacity C14 connects control chip U3's VIN pin, and the other end ground connection, one end of resistance R7 ground connection, the other end connects resistance R6, and the one end of resistance R6 far away from resistance R7 is connected at control chip U3's VOUT pin, and the FB pin of control chip U3 is connected between resistance R6 and resistance R7, control chip U3's VOUT pin still connects electric capacity C17, electric capacity C18 respectively, and the GND pin of electric capacity C17, electric capacity C18 and control chip U3 all ground connection,

[0014] The VIN pin of the control chip U3 is connected to the first boost type low-power supply converter and the power input circuit respectively.

[0015] The utility model further sets up: the EN pin of control chip U3 connects pull -up resistance R1, and pull -up resistance R1 connects power input circuit.

[0016] The utility model further sets up: one end of inductance L2 connects the VIN pin of control chip U3, the other end connects the SW pin of control chip U3.

[0017] The utility model further sets up: still respectively connect power output VCC2 and power output VCC1 at the VOUT pin of control chip U3, still have inductance L3 between the VOUT pin of control chip U3 and power output VCC1.

[0018] The utility model further sets up: the power input circuit includes power input VCC, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C37, resistance R2, resistance R3 and resistance R99;Power input VCC connects resistance R2, electric capacity C1, electric capacity C2, electric capacity C3 and battery power supply module respectively, and electric capacity C1, electric capacity C2, electric capacity C3 all ground connection;Resistance R2 connects external main control unit, electric capacity C37 and resistance R3 respectively;Resistance R3 connects resistance R99 and then ground connection;Electric capacity C37 ground connection;

[0019] The first boost type low-power power converter and the second boost type low-power power converter are connected between the electric capacity C2 and the electric capacity C3.

[0020] In summary, the beneficial effects of the above technical solutions of the utility model are as follows:

[0021] The utility model can realize that the main control unit controls the closing of the first boost type low-power power converter through the enable signal, thereby realizing the dynamic management of the module power consumption supplied by the first boost type low-power power converter, and reducing the power consumption to a certain extent.

[0022] Secondly, due to the addition of the boost type low-power power converter, the entire system can obtain stable 3.3V voltage, and even if the battery voltage is lower than the minimum working voltage 2.2V of the system, the entire system can still work normally, solving the problem that the system cannot work normally after the battery voltage is lower than 2.2V in the prior art, and greatly improving the endurance of the product. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0024] Figure 1 It is a low-power remote control circuit diagram for the frequency converter of the utility model;

[0025] Figure 2 The utility model discloses an embodiment power input circuit schematic diagram;

[0026] Figure 3 The utility model discloses an embodiment second boost type low -power consumption power supply converter partial circuit diagram, in the drawing B interface connects Figure 2 The A interface in;

[0027] Figure 4 The utility model discloses an embodiment first boost type low -power consumption power supply converter partial circuit diagram, in the drawing D interface connects Figure 3 The C interface in;

[0028] Figure 5 The utility model discloses an embodiment frequency converter system structure diagram.

[0029] In the drawing, the component list that each sign represents is as follows:

[0030] 100, main control unit, 200, first boost type low -power consumption power supply converter, 300, second boost type low -power consumption power supply converter, 400, pilot lamp, 500, keyboard, 600, wireless module, 700, encoder, 800, liquid crystal display. DETAILED DESCRIPTION

[0031] In order to make the personnel of the prior art better understand the technical scheme of the utility model, the technical scheme of the utility model is described clearly and completely below in combination with the drawings of the utility model, based on the embodiment in the application, other similar embodiments that the person skilled in the art obtains without making creative labor all should belong to the scope of protection of the application. In addition, the direction words mentioned in the following embodiments, for example "up", "down", "left", "right" and the like are only the direction of the drawing, therefore, the direction words used are used to explain and not limit the utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It should also be understood that the term "comprising" or "including" or "having" or the like, when used in this specification, specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, the term "comprising" as used in the specification includes any and all combinations of one or more of the associated items listed.

[0034] The utility model will be further described below in connection with the drawings and preferred embodiments.

[0035] Embodiment:

[0036] As Figures 1-4 shown, a kind of low-power remote controller circuit for frequency converter, including power input circuit, pull-up resistor R1, pull-down resistor R21, first boost type low-power power converter 200 and second boost type low-power power converter 300;First boost type low-power power converter 200 and second boost type low-power power converter 300 are connected on the power input circuit;The enable signal of the second boost type low-power power converter 300 is connected with the power input circuit by pull-up resistor R1, and the enable signal of the first boost type low-power power converter 200 is grounded by pull-down resistor R21.

[0037] As Figure 4 shown, the first boost type low-power power converter 200 includes control chip U5, capacitor C19, capacitor C20, capacitor C21, resistor R8, resistor R9 and inductance L4;One end of the capacitor C19 is connected with the VIN pin of control chip U5, and the other end is grounded;One end of resistor R9 is grounded, and the other end is connected with the resistor R8, and the end of resistor R8 away from resistor R9 is connected at the VOUT pin of control chip U5, and the FB pin of control chip U5 is connected between resistor R8 and resistor R9;Capacitor C20 and capacitor C21 are also respectively connected at the VOUT pin of control chip U5, and the GND pin of capacitor C20, capacitor C21 and control chip U5 are all grounded;

[0038] The VIN pin of control chip U5 is connected with second boost type low-power power converter 300 and power input circuit respectively.

[0039] The EN pin of control chip U5 is connected with external master control unit 100, one end of pull-down resistor R21 is connected between the EN pin of control chip U5 and external master control unit 100, and the other end is grounded.

[0040] One end of the inductance L4 is connected with the VIN pin of control chip U5, and the other end is connected with the SW pin of control chip U5.

[0041] One end of inductance L1 is connected at the VOUT pin of control chip U5, and the other end of inductance L1 is connected with power output terminal VCC3.The inductance L1 plays a filtering role.

[0042] As Figure 3As shown, the second boost type low-power power converter 300 includes a control chip U3, a capacitor C14, a capacitor C17, a capacitor C18, a resistor R6, a resistor R7 and an inductor L2; one end of the capacitor C14 is connected to the VIN pin of the control chip U3, and the other end is grounded; one end of the resistor R7 is grounded, and the other end is connected to the resistor R6, and the resistor R6 away from the resistor R7 is connected to the VOUT pin of the control chip U3, and the FB pin of the control chip U3 is connected between the resistor R6 and the resistor R7; the VOUT pin of the control chip U3 is also connected to the capacitor C17 and the capacitor C18, respectively, and the capacitor C17 and the capacitor C18 are grounded.

[0043] The VIN pin of the control chip U3 is connected to the first boost type low-power power converter 200 and the power input circuit.

[0044] The EN pin of the control chip U3 is connected to the pull-up resistor R1, and the pull-up resistor R1 is connected to the power input circuit.

[0045] One end of the inductor L2 is connected to the VIN pin of the control chip U3, and the other end is connected to the SW pin of the control chip U3.

[0046] The VOUT pin of the control chip U3 is also connected to the power output end VCC2 and the power output end VCC1, respectively, and the inductor L3 is further connected between the VOUT pin of the control chip U3 and the power output end VCC1.

[0047] As shown in Figure 2 The power input circuit includes a power input end VCC, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C37, a resistor R2, a resistor R3 and a resistor R99; the power input end VCC is connected to the resistor R2, the capacitor C1, the capacitor C2, the capacitor C3 and the battery power supply module, respectively, and the capacitor C1, the capacitor C2 and the capacitor C3 are grounded; the resistor R2 is connected to the external master control unit, the capacitor C37 and the resistor R3, respectively; the resistor R3 is connected to the resistor R99 and then grounded; and the capacitor C37 is grounded.

[0048] The first boost type low-power power converter 200 and the second boost type low-power power converter 300 are connected between the capacitor C2 and the capacitor C3.

[0049] In the working process, for the second boost type low power supply converter 300, when the battery is connected, the capacitor C14 starts to charge, because the EN pin is connected to high level through the resistor R1, the control chip U3 defaults to be in the working state, when the voltage of the VIN pin reaches the starting voltage of the control chip U3, the control chip U3 starts to work, and the capacitor C17 and the capacitor C18 also start to charge, the internal logic of the control chip U3 collects the voltage of the voltage dividing network composed of the resistor R6 and the resistor R7 through the FB pin, and the voltage of the VOUT pin is calculated through the voltage, when the voltage of the VOUT pin is greater than or equal to 3.3V, the SW pin is not in action and is in the static state, and the VIN pin and the VOUT pin are in the through state in the control chip U3, and the voltages of the VIN pin and the VOUT pin are equal.

[0050] When the voltage of the VOUT pin is less than 3.3V, the SW pin starts to act, and enters the periodic switching state, at this time, the voltage of the VOUT pin is equal to the sum of the induced electromotive force of the inductor L2 and the voltage of the VIN pin, the internal logic of the control chip U3 adjusts the induced electromotive force of the inductor L2 by controlling the switching time (the duty ratio of the PWM signal) of the SW, so as to adjust the voltage of the VOUT pin, and ensure that the voltage of the VOUT pin is not lower than 3.3V, when the voltage of the VIN pin is lower than the closing voltage of the control chip U3, the control chip U3 stops working.

[0051] For the first boost type low power supply converter 200, when the battery is connected, the capacitor C19 starts to charge, because the EN pin is connected to low level through the resistor R21, the control chip U5 defaults to be in the stop state, when the main control unit 100 is connected to high level, the control chip U5 starts to work, and the working principle is completely consistent with that of the second boost type low power supply converter 300.

[0052] As shown in Figure 5 As shown in FIG. 1, it is a system schematic diagram applied to the frequency converter of the utility model, and the frequency converter system comprises a main control unit 100, a liquid crystal display screen 800, a wireless module 600, a keyboard 500, an encoder 700, an indicator lamp 400, a first boost type low power supply converter 200 and a second boost type low power supply converter 300.

[0053] The first low-power voltage converter 200 is connected with the wireless module 600, and is used to provide stable power supply for the wireless module 600. The enable signal of the first low-power voltage converter 200 is connected with the main control unit 100 through I / O. The main control unit 100 controls the working state of the first low-power voltage converter 200 through the enable signal. When the enable signal is high, the first low-power voltage converter 200 is started to supply power for the wireless module 600. When the enable signal is low, the first low-power voltage converter 200 is stopped to supply power for the wireless module 600.

[0054] The second low-power voltage converter 300 is connected with the main control unit 100, the LCD 800, the keyboard 500, the encoder 700 and the indicator 400, and is used to provide stable power supply for these units. When the battery is connected, the second low-power voltage converter 300 is started immediately, and supplies power for the main control unit 100, the LCD 800, the keyboard 500, the encoder 700 and the indicator 400, so as to ensure the normal operation of the system.

[0055] When the system needs to start the wireless module 600 to communicate, the main control unit 100 controls the first low-power voltage converter 200 to start through the enable signal. The wireless module 600 starts to work immediately. When the work is finished, the main control unit 100 controls the first low-power voltage converter 200 to stop through the enable signal, so as to realize the dynamic management of the power consumption of the wireless module 600, and reduce the power consumption to a certain extent. In addition, due to the addition of the low-power voltage converter, the whole system can obtain stable 3.3V voltage. Even if the battery voltage is lower than the minimum working voltage 2.2V of the system, the whole system can still work normally. The problem that the system cannot work normally when the battery voltage is lower than 2.2V in the prior art is solved. The comprehensive effect is that the endurance of the product is greatly improved.

[0056] Finally, it should be noted that the above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A low-power remote control circuit for a frequency converter, characterized in that, It includes a power input circuit, a pull-up resistor R1, a pull-down resistor R21, a first boost-type low-power power converter, and a second boost-type low-power power converter; the first and second boost-type low-power power converters are connected to the power input circuit; the enable signal of the second boost-type low-power power converter is connected to the power input circuit through the pull-up resistor R1, and the enable signal of the first boost-type low-power power converter is grounded through the pull-down resistor R21.

2. The low-power remote control circuit for a frequency converter according to claim 1, characterized in that, The first boost-type low-power power converter includes a control chip U5, capacitors C19, C20, and C21, resistors R8 and R9, and an inductor L4. One end of capacitor C19 is connected to the VIN pin of control chip U5, and the other end is grounded. One end of resistor R9 is grounded, and the other end is connected to resistor R8. The end of resistor R8 furthest from resistor R9 is connected to the VOUT pin of control chip U5. The FB pin of control chip U5 is connected between resistors R8 and R9. Capacitors C20 and C21 are also connected to the VOUT pin of control chip U5. Capacitors C20 and C21, as well as the GND pin of control chip U5, are all grounded. The VIN pin of the control chip U5 is connected to the second boost-type low-power power converter and the power input circuit, respectively.

3. The low-power remote control circuit for a frequency converter according to claim 2, characterized in that, The EN pin of the control chip U5 is connected to the external main control unit. One end of the pull-down resistor R21 is connected between the EN pin of the control chip U5 and the external main control unit, and the other end is grounded.

4. The low-power remote control circuit for a frequency converter according to claim 3, characterized in that, One end of the inductor L4 is connected to the VIN pin of the control chip U5, and the other end is connected to the SW pin of the control chip U5.

5. A low-power remote control circuit for a frequency converter according to claim 4, characterized in that, The VOUT pin of the control chip U5 is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to the power output terminal VCC3.

6. The low-power remote control circuit for a frequency converter according to claim 1, characterized in that, The second boost-type low-power power converter includes a control chip U3, capacitors C14, C17, and C18, resistors R6 and R7, and an inductor L2. One end of capacitor C14 is connected to the VIN pin of control chip U3, and the other end is grounded. One end of resistor R7 is grounded, and the other end is connected to resistor R6. The end of resistor R6 away from resistor R7 is connected to the VOUT pin of control chip U3. The FB pin of control chip U3 is connected between resistors R6 and R7. Capacitors C17 and C18 are also connected to the VOUT pin of control chip U3. Capacitors C17 and C18 and the GND pin of control chip U3 are all grounded. The VIN pin of the control chip U3 is connected to the first boost-type low-power power converter and the power input circuit, respectively.

7. A low-power remote control circuit for a frequency converter according to claim 6, characterized in that, The EN pin of the control chip U3 is connected to the pull-up resistor R1, and the pull-up resistor R1 is connected to the power input circuit.

8. A low-power remote control circuit for a frequency converter according to claim 7, characterized in that, One end of the inductor L2 is connected to the VIN pin of the control chip U3, and the other end is connected to the SW pin of the control chip U3.

9. A low-power remote control circuit for a frequency converter according to claim 8, characterized in that, The VOUT pin of the control chip U3 is also connected to the power output terminals VCC2 and VCC1 respectively, and an inductor L3 is also connected between the VOUT pin of the control chip U3 and the power output terminal VCC1.

10. A low-power remote control circuit for a frequency converter according to claim 1, characterized in that, The power input circuit includes a power input terminal VCC, capacitors C1, C2, C3, and C37, resistors R2, R3, and R99. The power input terminal VCC is connected to resistor R2, capacitors C1, C2, and C3, and the battery power supply module. Capacitors C1, C2, and C3 are all grounded. Resistor R2 is connected to the external main control unit, capacitor C37, and resistor R3. Resistor R3 is connected to resistor R99 and then grounded. Capacitor C37 is grounded. The first boost low-power power converter and the second boost low-power power converter are connected between capacitor C2 and capacitor C3.

Images