Driving circuit system with boosting function

Abstract

The utility model provides a drive circuit system with a boost function. The drive circuit system comprises an MCU, an isolation transformation circuit, a high-frequency half-bridge circuit, a transformation circuit, a relay K1, a relay K2 and a first switching power supply. The MCU is electrically connected with the isolation transformation circuit, the relay K1 and the relay K2, the isolation transformation circuit is electrically connected with the high-frequency half-bridge circuit, the transformation circuit is electrically connected with the relay K1, the relay K2 and the first switching power supply, the magnitude of the output voltage of the first switching power supply can be adjusted by adjusting the input voltage of the first switching power supply, the universality is high, and the reliability is high. The driving circuit system is suitable for supplying power to various electric appliances with different powers, and the cost of the driving circuit system is low.

Description

Technical Field

[0001] The utility model relates to the technical field of drive circuits, and particularly relates to a drive circuit system with a boosting function. Background Art

[0002] The maximum output voltage of the existing same-type Ruiheng Zhitong RF-C-D1000 1MHZ radio frequency power supply is 160V, and the maximum output power is 30W. During use, the voltage cannot be changed in real time, and the versatility is relatively low.

[0003] In view of this, it is necessary to provide a new drive circuit system with a boosting function to overcome the above defects. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a drive circuit system with a boosting function, which can adjust the output voltage by adjusting the input voltage of the first switching power supply, has strong versatility, is suitable for powering a variety of electrical appliances with different powers, and has a low cost of the drive circuit system.

[0005] To achieve the above purpose, the technical solution provided by the utility model is realized as follows: A drive circuit system with a boosting function includes: an MCU, an isolation transformer circuit, a high-frequency half-bridge circuit, a transformer circuit, a relay K1, a relay K2, and a first switching power supply; the MCU is electrically connected to the isolation transformer circuit, the relay K1, and the relay K2, the isolation transformer circuit is electrically connected to the high-frequency half-bridge circuit, and the transformer circuit is electrically connected to the relay K1, the relay K2, and the first switching power supply.

[0006] Preferably, the isolation transformer circuit includes a transformer T2, a zener diode D1, and a zener diode D2. One end of the primary winding of the transformer T2 is electrically connected to the MCU, the other end of the primary winding of the transformer T2 is grounded, one end of the secondary winding of the transformer T2 is electrically connected to the cathode of the zener diode D1 and the high-frequency half-bridge circuit, the anode of the zener diode D1 is electrically connected to the anode of the zener diode D2, and the cathode of the zener diode D2 is electrically connected to the other end of the secondary winding of the transformer T2 and grounded.

[0007] Preferably, the high-frequency half-bridge circuit includes a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C13, a capacitor C14, a diode D3, a diode D4, a MOS transistor Q4, and a MOS transistor Q5;

[0008] The first end of the resistor R3 is electrically connected to the cathode of the zener diode D1 of the isolation transformer circuit and the first end of the resistor R4. The second end of the resistor R3 is electrically connected to the first end of the capacitor C13. The second end of the capacitor C13 is electrically connected to the first end of the resistor R2, the cathode of the diode D3, and the gate of the MOS transistor Q5. The second end of the resistor R2 is electrically connected to the anode of the diode D3 and the drain of the MOS transistor Q5 and is grounded.

[0009] The second end of the resistor R4 is electrically connected to the first end of the capacitor C14. The second end of the capacitor C14 is electrically connected to the gate of the MOS transistor Q4, the anode of the diode D4, and the first end of the resistor R5. The second end of the resistor R5 is electrically connected to the cathode of the diode D4, the source of the MOS transistor Q4, and the first switching power supply. The drain of the MOS transistor Q4 is electrically connected to the source of the MOS transistor Q5.

[0010] Preferably, the transformer circuit includes a transformer T1, capacitors C1, C2, C7, C8, C9, C10, C11, C12, and a resistor R1.

[0011] One end of the primary winding of the transformer T1 is electrically connected to the drain of the MOS transistor Q4. The other end of the primary winding of the transformer T1 is electrically connected to the first ends of the capacitors C7, C8, C9, C10, C11, and C12. The second end of the capacitor C7 is electrically connected to the second ends of the capacitors C8 and C9 and the first switching power supply. The second end of the capacitor C10 is electrically connected to the second ends of the capacitors C11 and C12 and the drain of the MOS transistor Q5 and is grounded.

[0012] One end of the secondary winding of the transformer T1 is electrically connected to the first ends of the capacitors C1 and C2 and the first end of the resistor R1. The other end of the secondary winding of the transformer T1 is electrically connected to the second ends of the capacitors C1 and C2 and the second end of the resistor R1. The first end of the resistor R1 is electrically connected to the relay K1. The second end of the resistor R1 is electrically connected to the relay K2. One end of the first switching power supply is electrically connected to the second end of the capacitor C7. The other end of the first switch is electrically connected to the second end of the capacitor C11.

[0013] Preferably, the drive circuit system with a boost function further includes a second switching power supply, a relay K3, and a relay K4. The first end of the resistor R1 is electrically connected to the relay K3, the second end of the resistor R1 is electrically connected to the relay K4, the relay K3 is electrically connected to the relay K1, the relay K4 is electrically connected to the relay K2, and the second switching power supply is electrically connected to the coil of the relay K4.

[0014] Preferably, the drive circuit system with a boost function further includes a cooling fan, which is electrically connected to the second switching power supply and is distributed close to the first switching power supply and the second switching power supply.

[0015] Compared with the prior art, the beneficial effect is that the PWM1 pulse signal output by the MCU is obtained as a PWM pulse signal through a 1:1 isolation transformer circuit, and an alternating current PULSE similar to a square wave is output through the high-frequency half-bridge circuit for the PWM pulse signal. The alternating current PULSE and the first switching power supply (48V) are boosted through a 1:10 isolation transformer circuit to obtain a high-voltage power supply with outputs of V+ and V-, that is, it completes the conversion of a small DC voltage (48V) controlled by a small signal of an MCU and then boosts it to an AC high voltage (480V).

[0016] Other features and advantages of the present invention will be described in the following description, and some will be obvious from the description, or can be understood through the implementation of the present invention. The features and advantages of the present invention can be achieved and obtained through the elements and combinations specifically pointed out in the appended claims. These and other features of the present invention will become more clear and understandable according to the following description and the appended claims, or can be understood through the implementation of the embodiments described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the circuit diagram of the drive circuit system with a boost function provided by the present invention.

[0019] Figure 2 It is the circuit diagram of the isolation transformer circuit.

[0020] Figure 3 It is the circuit diagram of the high-frequency half-bridge circuit.

[0021] Figure 4 It is a circuit diagram of a voltage transformation circuit.

[0022] Figure 5 It is a schematic circuit diagram of relays (K1, K2, K3, K4). Specific implementation manners

[0023] In order to make the purpose, technical solutions and beneficial technical effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0024] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0025] It should also be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances.

[0026] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In addition, the meanings of "multiple" and "several" refer to two or more, unless otherwise clearly and specifically defined.

[0027] Please refer to Figures 1 to 5, the present utility model provides a drive circuit system with a boosting function, including: an MCU (Micro Control Unit, which is a microcontroller unit in Chinese), an isolation transformer circuit, a high-frequency half-bridge circuit, a transformer circuit, a relay K1, a relay K2, and a first switching power supply (48V); the MCU is electrically connected to the isolation transformer circuit, the relay K1, and the relay K2, the isolation transformer circuit is electrically connected to the high-frequency half-bridge circuit, and the transformer circuit is electrically connected to the relay K1, the relay K2, and the first switching power supply.

[0028] In this way, the PWM1 pulse signal output by the MCU (1M 12V) obtains a PWM pulse signal through a 1:1 isolation transformer circuit, outputs an alternating current PULSE similar to a square wave through the high-frequency half-bridge circuit, and boosts the alternating current PULSE and the first switching power supply (48V) through a 1:10 isolation transformer circuit to obtain a high-voltage power supply with outputs of V+ and V-, that is, it completes the conversion and boosting of a small DC voltage (48V) controlled by a small signal of an MCU to an AC high voltage (480V).

[0029] In a preferred embodiment, the isolation transformer circuit includes a transformer T2, a zener diode D1, and a zener diode D2. One end of the primary winding of the transformer T2 is electrically connected to the MCU, the other end of the primary winding of the transformer T2 is grounded, one end of the secondary winding of the transformer T2 is electrically connected to the cathode of the zener diode D1 and the high-frequency half-bridge circuit, the anode of the zener diode D1 is electrically connected to the anode of the zener diode D2, and the cathode of the zener diode D2 is electrically connected to the other end of the secondary winding of the transformer T2 and grounded.

[0030] In a preferred embodiment, the high-frequency half-bridge circuit includes a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C13, a capacitor C14, a diode D3, a diode D4, a MOS transistor Q4, and a MOS transistor Q5;

[0031] The first end of the resistor R3 is electrically connected to the cathode of the zener diode D1 of the isolation transformer circuit and the first end of the resistor R4, the second end of the resistor R3 is electrically connected to the first end of the capacitor C13, the second end of the capacitor C13 is electrically connected to the first end of the resistor R2, the cathode of the diode D3, and the gate of the MOS transistor Q5, and the second end of the resistor R2 is electrically connected to the anode of the diode D3, the drain of the MOS transistor Q5, and grounded (48V ground wire).

[0032] The second end of the resistor R4 is electrically connected to the first end of the capacitor C14. The second end of the capacitor C14 is electrically connected to the gate of the MOS transistor Q4, the anode of the diode D4, and the first end of the resistor R5. The second end of the resistor R5 is electrically connected to the cathode of the diode D4, the source of the MOS transistor Q4, and the first switching power supply. The drain of the MOS transistor Q4 is electrically connected to the source of the MOS transistor Q5.

[0033] In a preferred embodiment, the transformer circuit includes a transformer T1, capacitors C1, C2, C7, C8, C9, C10, C11, C12, and a resistor R1.

[0034] One end of the primary winding of the transformer T1 is electrically connected to the drain of the MOS transistor Q4. The other end of the primary winding of the transformer T1 is electrically connected to the first ends of the capacitors C7, C8, C9, C10, C11, and C12. The second end of the capacitor C7 is electrically connected to the second ends of the capacitors C8 and C9 and the first switching power supply. The second end of the capacitor C10 is electrically connected to the second ends of the capacitors C11 and C12 and the drain of the MOS transistor Q5 and is grounded (48V ground wire).

[0035] One end of the secondary winding of the transformer T1 is electrically connected to the first ends of the capacitors C1 and C2 and the first end of the resistor R1. The other end of the secondary winding of the transformer T1 is electrically connected to the second ends of the capacitors C1 and C2 and the second end of the resistor R1. The first end of the resistor R1 is electrically connected to contact 2 of the relay K1. The second end of the resistor R1 is electrically connected to contact 2 of the relay K2. One end of the first switching power supply is electrically connected to the second end of the capacitor C7. The other end of the first switch is electrically connected to the second end of the capacitor C11.

[0036] In a preferred embodiment, the drive circuit system with a boost function further includes a second switching power supply (12V), relays K3 and K4. The first end of the resistor R1 is electrically connected to contacts 2 of the relays K1 and K3. The second end of the resistor R1 is electrically connected to contacts 2 of the relays K2 and K4. The second switching power supply is electrically connected to the coil of the relay K4 to supply power to the relays K1, K2, K3, and K4. In this way, the relays K1 and K2 are controlled by the input power of the second switching power supply and the control instruction of the MCU, so that the relays (K1, K2) and the relays (K3, K4) achieve energy output.

[0037] In a preferred embodiment, the drive circuit system with a boost function further includes a cooling fan, which is electrically connected to the second switching power supply and is distributed close to the first switching power supply and the second switching power supply, so as to dissipate heat from the first switching power supply and the second switching power supply.

[0038] The present utility model is not limited solely to what is described in the specification and embodiments. Therefore, for those skilled in the art, additional advantages and modifications can be easily achieved. Thus, without departing from the spirit and scope of the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details, representative devices, and the illustrative examples shown and described herein.

Claims

1. A driving circuit system with a boost function, characterized in that, Including: MCU, isolation transformer circuit, high-frequency half-bridge circuit, transformer circuit, relay K1, relay K2 and first switching power supply; The MCU is electrically connected to the isolation transformer circuit, relay K1 and relay K2. The isolation transformer circuit is electrically connected to the high-frequency half-bridge circuit. The transformer circuit is electrically connected to relay K1, relay K2 and the first switching power supply.

2. The drive circuit system with a boost function according to claim 1, wherein The isolation transformer circuit includes transformer T2, zener diode D1 and zener diode D2. One end of the primary winding of transformer T2 is electrically connected to the MCU. The other end of the primary winding of transformer T2 is grounded. One end of the secondary winding of transformer T2 is electrically connected to the cathode of zener diode D1 and the high-frequency half-bridge circuit. The anode of zener diode D1 is electrically connected to the anode of zener diode D2. The cathode of zener diode D2 is electrically connected to the other end of the secondary winding of transformer T2 and grounded.

3. The drive circuit system with a boost function according to claim 2, characterized in that The high-frequency half-bridge circuit includes resistor R2, resistor R3, resistor R4, resistor R5, capacitor C13, capacitor C14, diode D3, diode D4, MOS transistor Q4 and MOS transistor Q5; The first end of resistor R3 is electrically connected to the cathode of zener diode D1 of the isolation transformer circuit and the first end of resistor R4. The second end of resistor R3 is electrically connected to the first end of capacitor C13. The second end of capacitor C13 is electrically connected to the first end of resistor R2, the cathode of diode D3 and the gate of MOS transistor Q5. The second end of resistor R2 is electrically connected to the anode of diode D3 and the drain of MOS transistor Q5 and grounded. The second end of resistor R4 is electrically connected to the first end of capacitor C14. The second end of capacitor C14 is electrically connected to the gate of MOS transistor Q4, the anode of diode D4 and the first end of resistor R5. The second end of resistor R5 is electrically connected to the cathode of diode D4, the source of MOS transistor Q4 and the first switching power supply. The drain of MOS transistor Q4 is electrically connected to the source of MOS transistor Q5.

4. The drive circuit system with a boost function according to claim 3, wherein The transformer circuit includes transformer T1, capacitor C1, capacitor C2, capacitor C7, capacitor C8, capacitor C9, capacitor C10, capacitor C11, capacitor C12 and resistor R1; One end of the primary winding of transformer T1 is electrically connected to the drain of MOS transistor Q4. The other end of the primary winding of transformer T1 is electrically connected to the first ends of capacitor C7, capacitor C8, capacitor C9, capacitor C10, capacitor C11 and capacitor C12. The second end of capacitor C7 is electrically connected to the second ends of capacitor C8, capacitor C9 and the first switching power supply. The second end of capacitor C10 is electrically connected to the second ends of capacitor C11, capacitor C12 and the drain of MOS transistor Q5 and grounded. One end of the secondary winding of the transformer T1 is electrically connected to the first end of the capacitor C1, the first end of the capacitor C2, and the first end of the resistor R1. The other end of the secondary winding of the transformer T1 is electrically connected to the second end of the capacitor C1, the second end of the capacitor C2, and the second end of the resistor R1. The first end of the resistor R1 is electrically connected to the relay K1. The second end of the resistor R1 is electrically connected to the relay K2. One end of the first switching power supply is electrically connected to the second end of the capacitor C7. The other end of the first switch is electrically connected to the second end of the capacitor C11.

5. The drive circuit system with a boost function according to claim 4, wherein The drive circuit system with a boost function further includes a second switching power supply, a relay K3, and a relay K4. The first end of the resistor R1 is electrically connected to the relay K3. The second end of the resistor R1 is electrically connected to the relay K4. The relay K3 is electrically connected to the relay K1. The relay K4 is electrically connected to the relay K2. The second switching power supply is electrically connected to the coil of the relay K4.

6. The drive circuit system with a boost function according to claim 5, characterized in that, The drive circuit system with a boost function further includes a cooling fan. The cooling fan is electrically connected to the second switching power supply and is distributed close to the first switching power supply and the second switching power supply.

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