16-60V electronic bathroom and water heater water pump driving circuit

Abstract

The utility model discloses a 16-60V electronic bathroom and water heater water pump drive circuit, which comprises a voltage reduction and stabilization power supply circuit, a main control circuit, a feedback circuit, a speed regulation circuit and an inverter circuit, and the main control circuit is respectively connected with the voltage reduction and stabilization power supply circuit, the feedback circuit, the speed regulation circuit and the inverter circuit. The main control circuit is powered on, enters a standby state, receives an SP instruction of the speed regulation circuit, outputs an inversion signal to control the inversion circuit, outputs three-phase power supply of the motor, operates the motor, monitors the state in real time, outputs a corresponding signal and feeds back the signal to a client through an FG signal of the feedback circuit. The voltage reduction and stabilization power supply circuit adopts an LDO voltage reduction scheme, can adapt to 24V / 36V systems at the same time, and is higher in adaptability, wider in application range and low in failure rate.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a 16-60V electronic bathroom and water heater pump drive circuit. Background Technology

[0002] With industrial development and improved living standards, electronic bathroom fixtures and water heaters are common household appliances.

[0003] Currently, traditional bathroom products are gradually transitioning to electronic bathroom products, and electronic bathroom products (such as smart toilets and smart bathtubs) are becoming increasingly popular.

[0004] Water heaters are common household appliances. During use, water from the tap enters the water heater through the inlet pipe, is heated, and then hot water is output from the outlet pipe.

[0005] Water pumps are used in both electronic bathroom fixtures and water heaters. A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. It can also transport liquid-gas mixtures and liquids containing suspended solids.

[0006] In the existing technology, the water pump drive circuit of electronic sanitary ware and water heater mainly uses 7815 / 12 linear step-down for power supply, or high-voltage-resistant chips are expensive and it is difficult to adapt to 24V / 36V power supply systems at the same time. Utility Model Content

[0007] In view of this, in order to solve the above-mentioned problems in the prior art, this utility model proposes a 16-60V electronic bathroom and water heater pump drive circuit, which adopts an LDO step-down scheme and can adapt to 24V / 36V systems at the same time, making it more adaptable.

[0008] This utility model solves the above problems through the following technical means:

[0009] A 16-60V electronic bathroom and water heater pump drive circuit includes a step-down and regulated power supply circuit, a main control circuit, a feedback circuit, a speed control circuit, and an inverter circuit. The main control circuit is connected to the step-down and regulated power supply circuit, the feedback circuit, the speed control circuit, and the inverter circuit.

[0010] Preferably, the step-down and voltage-regulated power supply circuit includes a voltage regulator chip U1. Pin 4 of the voltage regulator chip U1 is connected to one end of resistor R10 and one end of resistor R11. The other end of resistor R10 is connected to pin 5 of the voltage regulator chip U1, one end of capacitor C2, the positive terminal of polarized capacitor C1, and the power supply terminal V+. The other end of resistor R11 is connected to pin 2 of the voltage regulator chip U1, the other end of capacitor C2, the negative terminal of polarized capacitor C1, and the power supply terminal V-. Pin 1 of the voltage regulator chip U1 is connected to one end of capacitor C6. The other end of capacitor C6 is connected to pin 6 of the voltage regulator chip U1, the negative terminal of diode D2, and coil L1. One end of the coil L1 is connected to one end of resistor R13, one end of capacitor C8, one end of capacitor C9 and one end of resistor R18 respectively. The other end of resistor R13 is connected to pin 3 of voltage regulator chip U1 and one end of resistor R14 respectively. The other end of resistor R14 is connected to pin 2 of voltage regulator chip U1, the positive terminal of diode D2, the other end of capacitor C8, the other end of capacitor C9, one end of capacitor C10, pin 2 of chip U3 and one end of capacitor C16 respectively. The other end of resistor R18 is connected to the other end of capacitor C10 and pin 3 of chip U3 respectively. Pin 1 of chip U3 is connected to the other end of capacitor C16.

[0011] Preferably, the main control circuit includes chip U2. Pin 23 of chip U2 is connected to one end of capacitor C5 and pin 2 of voltage regulator chip U1. The other end of capacitor C5 is connected to the other end of coil L1 and pin 24 of chip U2. Pin 45 of chip U2 is connected to one end of resistor R17. The other end of resistor R17 is connected to pin 2 of terminal J2. Pin 43 of chip U2 is connected to one end of capacitor C11 and pin 1 of chip U3. The other end of capacitor C11 is connected to pin 40 and pin 23 of chip U2. Pin 42 of chip U2 is connected to pin 3 of terminal J1. Pin 41 of chip U2... Connect pin 4 of terminal J1; pin 2 of terminal J1 connects to pin 23 of chip U2; pin 1 of terminal J1 connects to pin 43 of chip U2; pin 36 of chip U2 connects to one end of capacitor C13 and the negative terminal of diode D3; the other end of capacitor C13 connects to pin 34 of chip U2; pin 33 of chip U2 connects to one end of capacitor C14 and the negative terminal of diode D4; the other end of capacitor C14 connects to pin 31 of chip U2; pin 30 of chip U2 connects to one end of capacitor C15 and the negative terminal of diode D5; the other end of capacitor C15 connects to pin 28 of chip U2; the positive terminal of diode D5... The terminals are connected to the positive terminals of diodes D4 and D3, and one end of resistor R22. The other end of resistor R22 is connected to pin 24 of chip U2. Pin 9 of chip U2 is connected to one end of resistor R6 and one end of capacitor C4. The other end of capacitor C4 is connected to pin 23 of chip U2. The other end of resistor R6 is connected to one end of resistor R4 and one end of resistor R5. The other end of resistor R4 is connected to the positive terminal of polarized capacitor C1. The other end of resistor R5 is connected to pin 23 of chip U2. Pin 13 of chip U2 is connected to one end of capacitor C7 and one end of resistor R12. The other end of capacitor C7 is connected to... Connect the other end of resistor R12 to pin 23 of chip U2. Connect the other end of resistor R12 to one end of resistor R15 and pin 14 of chip U2. Connect the other end of resistor R15 to one end of resistor R21 and pin 15 of chip U2. Connect the other end of resistor R21 to one end of capacitor C12 and pin 23 of chip U2. Connect the other end of capacitor C12 to one end of resistor R20. Connect the other end of resistor R20 to one end of resistor R16, one end of resistor R19 and pin 16 of chip U2. Connect the other end of resistor R16 to pin 43 of chip U2. Connect the other end of resistor R19 to pin 23 of chip U2.

[0012] Preferably, the feedback circuit includes transistors Q1 and Q2. The collector of transistor Q2 is connected to the base of transistor Q1, one end of resistor R8, and one end of resistor R9. The other end of resistor R9 is connected to pin 21 of chip U2. The other end of resistor R8 is connected to the emitter of transistor Q2, one end of resistor R1, and pin 23 of chip U2. The base of transistor Q2 is connected to the other end of resistor R1 and the emitter of transistor Q1. The collector of transistor Q1 is connected to one end of resistor R2 and terminal FG. The other end of resistor R2 is connected to pin 43 of chip U2.

[0013] Preferably, the speed control circuit includes a Zener diode D1, the negative terminal of which is connected to pin 20 of chip U2, one end of capacitor C3, one end of resistor R7 and one end of resistor R3, the other end of resistor R3 is connected to terminal SP, and the positive terminal of Zener diode D1 is connected to pin 23 of chip U2, the other end of capacitor C3 and the other end of resistor R7.

[0014] Preferably, the inverter circuit includes half-bridges Q3, Q4, and Q5. Pin 5 of half-bridge Q3 is connected to pin 6 of half-bridge Q3 and terminal W1. Pin 7 of half-bridge Q3 is connected to pins 8 of half-bridge Q3, 7 of half-bridge Q5, 8 of half-bridge Q5, 7 of half-bridge Q4, 8 of half-bridge Q4, and the other end of resistor R4. Pin 3 of half-bridge Q3 is connected to one end of resistor R30, one end of capacitor C17, the other end of capacitor C12, one end of resistor R23, pin 3 of half-bridge Q4, pin 3 of half-bridge Q5, one end of resistor R32, and capacitor C17. One end of C20, one end of resistor R31, and one end of capacitor C19 are connected to the other end of resistor R23, which is connected to pin 23 of chip U2. Pin 4 of half-bridge Q3 is connected to the other ends of resistor R30, capacitor C17, and resistor R25. The other end of resistor R25 is connected to pin 27 of chip U2. Pin 1 of half-bridge Q3 is connected to one end of resistor R33, capacitor C18, and pin 34 of chip U2. Pin 2 of half-bridge Q3 is connected to the other ends of resistor R33, capacitor C18, and resistor R24. Resistor R24... The other end is connected to pin 35 of chip U2. Pin 4 of half-bridge Q5 is connected to the other end of resistor R32, the other end of capacitor C20, and one end of resistor R29. The other end of resistor R29 is connected to pin 26 of chip U2. Pin 1 of half-bridge Q5 is connected to one end of resistor R35, one end of capacitor C22, and pin 31 of chip U2. Pin 2 of half-bridge Q5 is connected to the other end of resistor R35, the other end of capacitor C22, and one end of resistor R27. The other end of resistor R27 is connected to pin 32 of chip U2. Pin 5 of half-bridge Q5 is connected to pins of half-bridge Q5. Pin 6 and terminal V1, pin 5 of half-bridge Q4 are connected to pin 6 of half-bridge Q4 and terminal U4 respectively, pin 4 of half-bridge Q4 is connected to the other end of resistor R31, the other end of capacitor C19 and one end of resistor R28 respectively, the other end of resistor R28 is connected to pin 25 of chip U2, pin 1 of half-bridge Q4 is connected to one end of resistor R34, one end of capacitor C21 and pin 28 of chip U2 respectively, pin 2 of half-bridge Q4 is connected to the other end of resistor R34, the other end of capacitor C21 and one end of resistor R26 respectively, the other end of resistor R26 is connected to pin 29 of chip U2.

[0015] Preferably, the voltage regulator chip U1 is model PL88101.

[0016] Preferably, the chip U2 is model CMS32M5536.

[0017] Preferably, the chip U3 is model number 78L05.

[0018] Preferably, the half-bridges Q3, Q4, and Q5 are of the same model, namely JMTP170N06D.

[0019] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0020] This utility model's step-down and regulated power supply circuit adopts an LDO step-down scheme, which can adapt to 24V / 36V systems simultaneously, has stronger compatibility, a wider range of applications, and a low failure rate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is the schematic diagram of the 16-60V electronic sanitary ware and water heater pump drive circuit of this utility model;

[0023] Figure 2 This is a schematic diagram of the step-down and voltage-regulated power supply circuit of this utility model;

[0024] Figure 3 This is the schematic diagram of the main control circuit of this utility model;

[0025] Figure 4 This is a schematic diagram of the feedback circuit of this utility model;

[0026] Figure 5 This is the schematic diagram of the speed control circuit of this utility model;

[0027] Figure 6 This is the schematic diagram of the inverter circuit of this utility model. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the described embodiments are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] like Figure 1 As shown, this utility model provides a 16-60V electronic bathroom and water heater pump drive circuit, including a step-down and regulated power supply circuit, a main control circuit, a feedback circuit, a speed control circuit, and an inverter circuit. The main control circuit is connected to the step-down and regulated power supply circuit, the feedback circuit, the speed control circuit, and the inverter circuit.

[0030] like Figure 2As shown, the step-down voltage regulator circuit includes a voltage regulator chip U1, model PL88101. Pin 4 of voltage regulator chip U1 is connected to one end of resistor R10 and one end of resistor R11. The other end of resistor R10 is connected to pin 5 of voltage regulator chip U1, one end of capacitor C2, the positive terminal of polarized capacitor C1, and the power supply terminal V+. The other end of resistor R11 is connected to pin 2 of voltage regulator chip U1, the other end of capacitor C2, the negative terminal of polarized capacitor C1, and the power supply terminal V-. Pin 1 of voltage regulator chip U1 is connected to one end of capacitor C6. The other end of capacitor C6 is connected to pin 6 of voltage regulator chip U1, the negative terminal of diode D2, and coil L1. One end of the coil L1 is connected to one end of resistor R13, one end of capacitor C8, one end of capacitor C9 and one end of resistor R18 respectively. The other end of resistor R13 is connected to pin 3 of voltage regulator chip U1 and one end of resistor R14 respectively. The other end of resistor R14 is connected to pin 2 of voltage regulator chip U1, the positive terminal of diode D2, the other end of capacitor C8, the other end of capacitor C9, one end of capacitor C10, pin 2 of chip U3 and one end of capacitor C16 respectively. The other end of resistor R18 is connected to the other end of capacitor C10 and pin 3 of chip U3 respectively. Pin 1 of chip U3 is connected to the other end of capacitor C16. The model of chip U3 is 78L05.

[0031] like Figure 3As shown, the main control circuit includes chip U2, model CMS32M5536. Pin 23 of chip U2 is connected to one end of capacitor C5 and pin 2 of voltage regulator chip U1. The other end of capacitor C5 is connected to the other end of coil L1 and pin 24 of chip U2. Pin 45 of chip U2 is connected to one end of resistor R17. The other end of resistor R17 is connected to pin 2 of terminal J2. Pin 43 of chip U2 is connected to one end of capacitor C11 and pin 1 of chip U3. The other end of capacitor C11 is connected to pin 40 and pin 23 of chip U2. Pin 42 of chip U2 is connected to terminal J1. Pin 3 of chip U2 and pin 41 of chip U2 are connected to pin 4 of terminal J1. Pin 2 of terminal J1 is connected to pin 23 of chip U2. Pin 1 of terminal J1 is connected to pin 43 of chip U2. Pin 36 of chip U2 is connected to one end of capacitor C13 and the negative terminal of diode D3. The other end of capacitor C13 is connected to pin 34 of chip U2. Pin 33 of chip U2 is connected to one end of capacitor C14 and the negative terminal of diode D4. The other end of capacitor C14 is connected to pin 31 of chip U2. Pin 30 of chip U2 is connected to one end of capacitor C15 and the negative terminal of diode D5. The other end of capacitor C15 is connected to pin 28 of chip U2. The anode of diode D5 is connected to the anodes of diodes D4 and D3, and one end of resistor R22. The other end of resistor R22 is connected to pin 24 of chip U2. Pin 9 of chip U2 is connected to one end of resistor R6 and one end of capacitor C4. The other end of capacitor C4 is connected to pin 23 of chip U2. The other end of resistor R6 is connected to one end of resistor R4 and one end of resistor R5. The other end of resistor R4 is connected to the anode of polarized capacitor C1. The other end of resistor R5 is connected to pin 23 of chip U2. Pin 13 of chip U2 is connected to one end of capacitor C7 and one end of resistor R12. The other end is connected to pin 23 of chip U2. The other end of resistor R12 is connected to one end of resistor R15 and pin 14 of chip U2. The other end of resistor R15 is connected to one end of resistor R21 and pin 15 of chip U2. The other end of resistor R21 is connected to one end of capacitor C12 and pin 23 of chip U2. The other end of capacitor C12 is connected to one end of resistor R20. The other end of resistor R20 is connected to one end of resistor R16, one end of resistor R19 and pin 16 of chip U2. The other end of resistor R16 is connected to pin 43 of chip U2. The other end of resistor R19 is connected to pin 23 of chip U2.

[0032] like Figure 4As shown, the feedback circuit includes transistors Q1 and Q2. The collector of transistor Q2 is connected to the base of transistor Q1, one end of resistor R8, and one end of resistor R9. The other end of resistor R9 is connected to pin 21 of chip U2. The other end of resistor R8 is connected to the emitter of transistor Q2, one end of resistor R1, and pin 23 of chip U2. The base of transistor Q2 is connected to the other end of resistor R1 and the emitter of transistor Q1. The collector of transistor Q1 is connected to one end of resistor R2 and terminal FG. The other end of resistor R2 is connected to pin 43 of chip U2.

[0033] like Figure 5 As shown, the speed control circuit includes a Zener diode D1. The negative terminal of the Zener diode D1 is connected to pin 20 of chip U2, one end of capacitor C3, one end of resistor R7, and one end of resistor R3, respectively. The other end of resistor R3 is connected to terminal SP. The positive terminal of the Zener diode D1 is connected to pin 23 of chip U2, the other end of capacitor C3, and the other end of resistor R7, respectively.

[0034] like Figure 6As shown, the inverter circuit includes half-bridges Q3, Q4, and Q5; half-bridges Q3, Q4, and Q5 are all of the same model, JMTP170N06D; pin 5 of half-bridge Q3 is connected to pin 6 and terminal W1 respectively; pin 7 of half-bridge Q3 is connected to pin 8 of half-bridge Q3, pin 7 of half-bridge Q5, pin 8 of half-bridge Q5, pin 7 of half-bridge Q4, pin 8 of half-bridge Q4, and the other end of resistor R4; pin 3 of half-bridge Q3 is connected to one end of resistor R30, one end of capacitor C17, the other end of capacitor C12, one end of resistor R23, and half-bridge Q4. Pin 3 of the half-bridge Q5, one end of resistor R32, one end of capacitor C20, one end of resistor R31, and one end of capacitor C19 are connected to pin 23 of chip U2. Pin 4 of half-bridge Q3 is connected to the other end of resistor R30, the other end of capacitor C17, and one end of resistor R25. The other end of resistor R25 is connected to pin 27 of chip U2. Pin 1 of half-bridge Q3 is connected to one end of resistor R33, one end of capacitor C18, and pin 34 of chip U2. Pin 2 of half-bridge Q3 is connected to the other end of resistor R33 and the other end of capacitor C18. One end of resistor R24 ​​is connected to pin 35 of chip U2. Pin 4 of half-bridge Q5 is connected to the other end of resistor R32, the other end of capacitor C20, and one end of resistor R29. The other end of resistor R29 is connected to pin 26 of chip U2. Pin 1 of half-bridge Q5 is connected to one end of resistor R35, one end of capacitor C22, and pin 31 of chip U2. Pin 2 of half-bridge Q5 is connected to the other end of resistor R35, the other end of capacitor C22, and one end of resistor R27. The other end of resistor R27 is connected to pin 32 of chip U2. Pin 5 of half-bridge Q5 is connected to... Connect pin 6 of half-bridge Q5 to terminal V1. Connect pin 5 of half-bridge Q4 to pin 6 of half-bridge Q4 and terminal U4. Connect pin 4 of half-bridge Q4 to the other end of resistor R31, the other end of capacitor C19, and one end of resistor R28. Connect the other end of resistor R28 to pin 25 of chip U2. Connect pin 1 of half-bridge Q4 to one end of resistor R34, one end of capacitor C21, and pin 28 of chip U2. Connect pin 2 of half-bridge Q4 to the other end of resistor R34, the other end of capacitor C21, and one end of resistor R26. Connect the other end of resistor R26 to pin 29 of chip U2.

[0035] The working process of the water pump drive circuit of this utility model is as follows: When powered on, the main control circuit enters the standby state, receives the SP command from the speed control circuit, outputs the inverter signal to control the inverter circuit, the inverter circuit outputs three-phase power supply to the motor, the motor runs, the main control circuit performs real-time status monitoring and outputs corresponding signals to the customer through the FG signal of the feedback circuit.

[0036] This utility model's step-down and regulated power supply circuit adopts an LDO step-down scheme, which can adapt to 24V / 36V systems simultaneously, has stronger compatibility, a wider range of applications, and a low failure rate.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A 16-60V electronic bathroom and water heater pump driving circuit, characterized in that, Including step-down voltage stabilizing power supply circuit, main control circuit, feedback circuit, speed regulation circuit and inverter circuit, main control circuit connects step-down voltage stabilizing power supply circuit, feedback circuit, speed regulation circuit and inverter circuit respectively.

2. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 1, characterized in that, The step-down voltage stabilizing power supply circuit includes a voltage stabilizing chip U1, one end of the resistor R10 and one end of the resistor R11 are connected to the pin 4 of the voltage stabilizing chip U1, the other end of the resistor R10 is connected to the pin 5 of the voltage stabilizing chip U1, one end of the capacitor C2, the positive pole of the polar capacitor C1 and the power supply terminal V+, the other end of the resistor R11 is connected to the pin 2 of the voltage stabilizing chip U1, the other end of the capacitor C2, the negative pole of the polar capacitor C1 and the power supply terminal V-, one end of the capacitor C6 is connected to the pin 1 of the voltage stabilizing chip U1, the other end of the capacitor C6 is connected to the pin 6 of the voltage stabilizing chip U1, the negative pole of the diode D2 and one end of the coil L1, the other end of the coil L1 is connected to one end of the resistor R13, one end of the capacitor C8, one end of the capacitor C9 and one end of the resistor R18, the other end of the resistor R13 is connected to the pin 3 of the voltage stabilizing chip U1 and one end of the resistor R14, the other end of the resistor R14 is connected to the pin 2 of the voltage stabilizing chip U1, the positive pole of the diode D2, the other end of the capacitor C8, the other end of the capacitor C9, one end of the capacitor C10, the pin 2 of the chip U3 and one end of the capacitor C16, the other end of the resistor R18 is connected to the other end of the capacitor C10 and the pin 3 of the chip U3, one end of the capacitor C16 is connected to the pin 1 of the chip U3.

3. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 2, characterized in that, The main control circuit includes chip U2, the foot 23 of chip U2 is connected with one end of capacitor C5 and the foot 2 of voltage stabilizing chip U1 respectively, the other end of capacitor C5 is connected with the other end of coil L1 and the foot 24 of chip U2 respectively, the foot 45 of chip U2 is connected with one end of resistor R17, the other end of resistor R17 is connected with the foot 2 of terminal J2, the foot 43 of chip U2 is connected with one end of capacitor C11 and the foot 1 of chip U3 respectively, the other end of capacitor C11 is connected with the foot 40 of chip U2 and the foot 23 of chip U2 respectively, the foot 42 of chip U2 is connected with the foot 3 of terminal J1, the foot 41 of chip U2 is connected with the foot 4 of terminal J1, the foot 2 of terminal J1 is connected with the foot 23 of chip U2, the foot 1 of terminal J1 is connected with the foot 43 of chip U2, the foot 36 of chip U2 is connected with one end of capacitor C13 and the negative electrode of diode D3 respectively, the other end of capacitor C13 is connected with the foot 34 of chip U2, the foot 33 of chip U2 is connected with one end of capacitor C14 and the negative electrode of diode D4 respectively, the other end of capacitor C14 is connected with the foot 31 of chip U2, the foot 30 of chip U2 is connected with one end of capacitor C15 and the negative electrode of diode D5 respectively, the other end of capacitor C15 is connected with the foot 28 of chip U2, the positive electrode of diode D5 is connected with the positive electrode of diode D4, the positive electrode of diode D3 and one end of resistor R22 respectively, the other end of resistor R22 is connected with the foot 24 of chip U2, the foot 9 of chip U2 is connected with one end of resistor R6 and one end of capacitor C4 respectively, the other end of capacitor C4 is connected with the foot 23 of chip U2, the other end of resistor R6 is connected with one end of resistor R4 and one end of resistor R5 respectively, the other end of resistor R4 is connected with the positive electrode of polarity capacitor C1, the other end of resistor R5 is connected with the foot 23 of chip U2, the foot 13 of chip U2 is connected with one end of capacitor C7 and one end of resistor R12 respectively, the other end of capacitor C7 is connected with the foot 23 of chip U2, the other end of resistor R12 is connected with one end of resistor R15 and the foot 14 of chip U2 respectively, the other end of resistor R15 is connected with one end of resistor R21 and the foot 15 of chip U2 respectively, the other end of resistor R21 is connected with one end of capacitor C12 and the foot 23 of chip U2 respectively, the other end of capacitor C12 is connected with one end of resistor R20, the other end of resistor R20 is connected with one end of resistor R16, one end of resistor R19 and the foot 16 of chip U2 respectively, the other end of resistor R16 is connected with the foot 43 of chip U2, the other end of resistor R19 is connected with the foot 23 of chip U2.

4. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 3, characterized in that, The feedback circuit includes transistor Q1 and transistor Q2, the collector of transistor Q2 is connected with the base of transistor Q1, one end of resistor R8 and one end of resistor R9 respectively, the other end of resistor R9 is connected with the foot 21 of chip U2, the other end of resistor R8 is connected with the emitter of transistor Q2, one end of resistor R1 and the foot 23 of chip U2 respectively, the base of transistor Q2 is connected with the other end of resistor R1 and the emitter of transistor Q1 respectively, the collector of transistor Q1 is connected with one end of resistor R2 and terminal FG respectively, the other end of resistor R2 is connected with the foot 43 of chip U2.

5. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 3, characterized in that, The speed regulation circuit comprises a stabilizing diode D1, the negative pole of the stabilizing diode D1 is connected with the pin 20 of the chip U2, one end of the capacitor C3, one end of the resistor R7 and one end of the resistor R3 respectively, the other end of the resistor R3 is connected with the terminal SP, the positive pole of the stabilizing diode D1 is connected with the pin 23 of the chip U2, the other end of the capacitor C3 and the other end of the resistor R7 respectively.

6. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 3, characterized in that, The inverter circuit comprises a half bridge Q3, a half bridge Q4 and a half bridge Q5, the pin 5 of the half bridge Q3 is connected with the pin 6 of the half bridge Q3 and the terminal W1 respectively, the pin 7 of the half bridge Q3 is connected with the pin 8 of the half bridge Q3, the pin 7 of the half bridge Q5, the pin 8 of the half bridge Q5, the pin 7 of the half bridge Q4, the pin 8 of the half bridge Q4 and the other end of the resistor R4 respectively, the pin 3 of the half bridge Q3 is connected with one end of the resistor R30, one end of the capacitor C17, the other end of the capacitor C12, one end of the resistor R23, the pin 3 of the half bridge Q4, the pin 3 of the half bridge Q5, one end of the resistor R32, one end of the capacitor C20, one end of the resistor R31 and one end of the capacitor C19 respectively, the other end of the resistor R23 is connected with the pin 23 of the chip U2, the pin 4 of the half bridge Q3 is connected with the other end of the resistor R30, the other end of the capacitor C17 and one end of the resistor R25 respectively, the other end of the resistor R25 is connected with the pin 27 of the chip U2, the pin 1 of the half bridge Q3 is connected with one end of the resistor R33, one end of the capacitor C18 and the pin 34 of the chip U2 respectively, the pin 2 of the half bridge Q3 is connected with the other end of the resistor R33, the other end of the capacitor C18 and one end of the resistor R24 respectively, the other end of the resistor R24 is connected with the pin 35 of the chip U2, the pin 4 of the half bridge Q5 is connected with the other end of the resistor R32, the other end of the capacitor C20 and one end of the resistor R29 respectively, the other end of the resistor R29 is connected with the pin 26 of the chip U2, the pin 1 of the half bridge Q5 is connected with one end of the resistor R35, one end of the capacitor C22 and the pin 31 of the chip U2 respectively, the pin 2 of the half bridge Q5 is connected with the other end of the resistor R35, the other end of the capacitor C22 and one end of the resistor R27 respectively, the other end of the resistor R27 is connected with the pin 32 of the chip U2, the pin 5 of the half bridge Q5 is connected with the pin 6 of the half bridge Q5 and the terminal V1 respectively, the pin 5 of the half bridge Q4 is connected with the pin 6 of the half bridge Q4 and the terminal U4 respectively, the pin 4 of the half bridge Q4 is connected with the other end of the resistor R31, the other end of the capacitor C19 and one end of the resistor R28 respectively, the other end of the resistor R28 is connected with the pin 25 of the chip U2, the pin 1 of the half bridge Q4 is connected with one end of the resistor R34, one end of the capacitor C21 and the pin 28 of the chip U2 respectively, the pin 2 of the half bridge Q4 is connected with the other end of the resistor R34, the other end of the capacitor C21 and one end of the resistor R26 respectively, the other end of the resistor R26 is connected with the pin 29 of the chip U2.

7. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 2, characterized in that, The model of the stabilizing chip U1 is PL88101.

8. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 3, characterized in that, The model of the chip U2 is CMS32M5536.

9. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 2, characterized in that, The model of the chip U3 is 78L05.

10. The 16-60V electronic bathroom and water heater pump driving circuit according to claim 6, characterized in that, The models of the half bridge Q3, the half bridge Q4 and the half bridge Q5 are the same, all being JMTP170N06D.

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