A voltage stabilizing circuit and a wide voltage input high voltage winch

Abstract

The present disclosure provides a kind of voltage stabilizing circuit and wide voltage input high pressure winch, wherein the voltage stabilizing circuit includes: boost module and buck module, boost module includes: first charge-discharge unit and boost chip, boost chip is used to control the charge-discharge of first charge-discharge unit, so that the voltage of the power output end of first charge-discharge unit is not less than first voltage, buck module includes: second charge-discharge unit and buck chip, and buck chip is used to control the charge-discharge of second charge-discharge unit, so that the voltage of the power output end of second charge-discharge unit is not greater than second voltage;Wherein, second voltage is less than first voltage.In a kind of voltage stabilizing circuit and wide voltage input high pressure winch of the present disclosure, stable power supply can still be realized when voltage fluctuation occurs in low-voltage power supply, thereby ensuring the safe and stable operation of device.

Description

Technical Field

[0001] This disclosure relates to the field of winch technology, and more particularly to a voltage regulator circuit and a high-voltage winch with a wide voltage input range. Background Technology

[0002] A winch is a mechanical device that uses a drum to wind ropes or cables to pull, lift, or move heavy objects. It is widely used in engineering, navigation, off-road, rescue, and other fields.

[0003] The control power supply of the high-voltage winch needs to be connected to the low-voltage power supply in the vehicle or other carrier. However, this low-voltage power supply is not always maintained at a fixed voltage, but will fluctuate within a certain range. During the fluctuation, the voltage is too low to maintain the operation of the device, while the voltage is too high, which will cause abnormality or even damage to the device. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a voltage regulator circuit and a high-voltage winch with a wide voltage input range.

[0006] To achieve the above objectives, the first aspect of this disclosure provides a voltage regulator circuit, comprising: a boost module and a buck module. The boost module includes: a first charge / discharge unit and a boost chip. The power input terminal of the first charge / discharge unit is connected to the power output terminal of a low-voltage power supply, and the control output terminal of the boost chip is connected to the control input terminal of the first charge / discharge unit. The boost chip is used to control the charging and discharging of the first charge / discharge unit so that the voltage at the power output terminal of the first charge / discharge unit is not less than a first voltage. The buck module includes: a second charge / discharge unit and a buck chip. The power input terminal of the second charge / discharge unit is connected to the power output terminal of the first charge / discharge unit, and the control output terminal of the buck chip is connected to the control input terminal of the second charge / discharge unit. The buck chip is used to control the charging and discharging of the second charge / discharge unit so that the voltage at the power output terminal of the second charge / discharge unit is not greater than a second voltage; wherein the second voltage is less than the first voltage.

[0007] Optionally, the first charging and discharging unit includes: a first inductor and a first capacitor; wherein, the first end of the first inductor serves as the power input terminal of the first charging and discharging unit and is connected to the power output terminal of the low-voltage power supply, and the first end of the first capacitor serves as the power output terminal of the first charging and discharging unit and is connected to the second end of the first inductor, and the second end of the first capacitor is grounded; the switching node pin of the boost chip is connected to the second end of the first inductor.

[0008] Optionally, the first charging and discharging unit further includes: a second capacitor and a first diode; the first terminal of the second capacitor is connected to the first terminal of the first capacitor, and the second terminal of the second capacitor is connected to the second terminal of the first capacitor, the capacitance value of the second capacitor is less than the capacitance value of the first capacitor; the anode of the first diode is connected to the second terminal of the first inductor and the switching node pin of the boost chip, respectively, and the cathode of the first diode is connected to the first terminal of the first capacitor and the first terminal of the second capacitor, respectively.

[0009] Optionally, the boost module further includes: a third capacitor and a first resistor; wherein, the first terminal of the third capacitor is connected to the second terminal of the first inductor, and the second terminal of the third capacitor is connected to the first terminal of the first resistor, and the second terminal of the first resistor is grounded.

[0010] Optionally, the boost module further includes a second resistor and a third resistor; wherein, the first end of the second resistor is connected to the first end of the first capacitor and the first end of the second capacitor respectively, and the second end of the second resistor is connected to the first end of the third resistor, and the second end of the third resistor is grounded; the feedback pin of the boost chip is connected to the second end of the second resistor.

[0011] Optionally, the boost module further includes: a fourth resistor, a fourth capacitor, and a fifth capacitor; wherein, the first end of the fourth resistor is connected to the first end of the first inductor; the first ends of the fourth capacitor and the fifth capacitor are respectively connected to the first end of the first inductor, and the second ends of the fourth capacitor and the fifth capacitor are respectively grounded, and the capacitance values ​​of the fourth capacitor and the fifth capacitor are equal; the enable pin of the boost chip is connected to the second end of the fourth resistor, and the input pins of the boost chip are respectively connected to the first ends of the fourth capacitor and the fifth capacitor.

[0012] Optionally, the second charging and discharging unit includes a second inductor and a sixth capacitor; wherein, the first end of the second inductor is connected to the switching node pin of the step-down chip, and the first end of the sixth capacitor serves as the power output terminal of the second charging and discharging unit and is connected to the second end of the second inductor, and the second end of the sixth capacitor is grounded.

[0013] Optionally, the step-down module further includes: a seventh capacitor, an eighth capacitor, and a second diode; wherein the first terminal of the seventh capacitor and the first terminal of the eighth capacitor are respectively connected to the first terminal of the sixth capacitor, and the second terminal of the seventh capacitor and the second terminal of the eighth capacitor are respectively connected to the second terminal of the sixth capacitor; the anode of the second diode is connected to the second terminal of the sixth capacitor, and the cathode of the second diode is connected to the first terminal of the second inductor.

[0014] Optionally, the step-down module further includes: a fifth resistor, a sixth resistor, and a ninth capacitor; wherein, the first end of the fifth resistor is grounded, and the second end of the fifth resistor is connected to the first end of the sixth resistor and the feedback pin of the step-down chip, respectively; the second end of the sixth resistor is connected to the first end of the sixth capacitor; the first end of the ninth capacitor is connected to the bootstrap pin of the step-down chip, and the second end of the ninth capacitor is connected to the first end of the second inductor.

[0015] A second aspect of this disclosure provides a high-voltage winch with a wide voltage input, comprising: a voltage regulator circuit as provided in the first aspect of this disclosure.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] Because the power input terminal of the first charging / discharging unit is connected to the power output terminal of the low-voltage power supply, and the control output terminal of the boost chip is connected to the control input terminal of the first charging / discharging unit, the boost chip can control the charging and discharging of the first charging / discharging unit, thereby boosting the voltage at the power output terminal of the first charging / discharging unit to a level not less than the first voltage. Similarly, because the power input terminal of the second charging / discharging unit is connected to the power output terminal of the first charging / discharging unit, and the control output terminal of the buck chip is connected to the control input terminal of the second charging / discharging unit, the buck chip can control the charging and discharging of the second charging / discharging unit, thereby reducing the voltage at the power output terminal of the second charging / discharging unit to a level not greater than the second voltage. Therefore, through the boost module's initial voltage increase and the buck module's subsequent voltage decrease, a wider range of input voltages can be achieved, ensuring stable power supply even when the low-voltage power supply experiences voltage fluctuations, thus guaranteeing the safe and stable operation of the device.

[0018] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a circuit diagram of the boost module in a voltage regulator circuit according to an embodiment of the present disclosure;

[0021] Figure 2 This is a circuit diagram of the step-down module in a voltage regulator circuit proposed in an embodiment of the present disclosure;

[0022] As shown in the figure:

[0023] 7. Boost module; 8. Buck module;

[0024] L1 is the first inductor, and L2 is the second inductor.

[0025] R1, the first resistor; R2, the second resistor; R3, the third resistor; R4, the fourth resistor; R5, the fifth resistor; R6, the sixth resistor.

[0026] C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; C7, seventh capacitor; C8, eighth capacitor; C9, ninth capacitor.

[0027] D1, the first diode; D2, the second diode;

[0028] U1 is a boost converter chip, and U2 is a buck converter chip. Detailed Implementation

[0029] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0030] like Figure 1 and Figure 2 As shown in the figure, this disclosure proposes a voltage regulator circuit, including a boost module 7 and a buck module 8. The boost module 7 includes a first charging / discharging unit and a boost chip U1. The power input terminal of the first charging / discharging unit is connected to the power output terminal of a low-voltage power supply, and the control output terminal of the boost chip U1 is connected to the control input terminal of the first charging / discharging unit. The boost chip U1 is used to control the charging and discharging of the first charging / discharging unit so that the voltage at the power output terminal of the first charging / discharging unit is not less than a first voltage. The buck module 8 includes a second charging / discharging unit and a buck chip U2. The power input terminal of the second charging / discharging unit is connected to the power output terminal of the first charging / discharging unit, and the control output terminal of the buck chip U2 is connected to the control input terminal of the second charging / discharging unit. The buck chip U2 is used to control the charging and discharging of the second charging / discharging unit so that the voltage at the power output terminal of the second charging / discharging unit is not greater than a second voltage. The second voltage is less than the first voltage.

[0031] Understandably, since the power input terminal of the first charging / discharging unit is connected to the power output terminal of the low-voltage power supply, and the control output terminal of the boost chip U1 is connected to the control input terminal of the first charging / discharging unit, the boost chip U1 can control the charging and discharging of the first charging / discharging unit, thereby boosting the voltage at the power output terminal of the first charging / discharging unit to a level not less than the first voltage. Similarly, since the power input terminal of the second charging / discharging unit is connected to the power output terminal of the first charging / discharging unit, and the control output terminal of the buck chip U2 is connected to the control input terminal of the second charging / discharging unit, the buck chip U2 can control the charging and discharging of the second charging / discharging unit, thereby reducing the voltage at the power output terminal of the second charging / discharging unit to a level not greater than the second voltage. Therefore, through the initial boost by the boost module 7 and the subsequent buck by the buck module 8, a wider range of input voltages can be achieved, ensuring stable power supply even when the low-voltage power supply experiences voltage fluctuations, thus guaranteeing the safe and stable operation of the device.

[0032] It should be noted that the low-voltage power supply and the first and second voltages can be set according to actual needs, and there are no restrictions on this. For example, the low-voltage power supply can be a vehicle-mounted 12V power supply. The 12V power supply is not always maintained at 12V, but will fluctuate between 9V and 18V, and in extreme cases it will reach above 24V. In this embodiment, the boost module 7 and the buck module 8 are connected in series. The boost module 7 ensures that the output voltage of the low-voltage power supply is not less than the first voltage (12V), and the buck module 8 ensures that the boost module 7 has a second voltage (5V). Thus, the output voltage of the low-voltage power supply can work normally whether it is 6V or 40V.

[0033] For example, when the output voltage of the low-voltage power supply is greater than the first voltage, the boost module 7 continues to output the voltage, and the subsequent buck module 8 reduces the voltage to the second voltage. When the output voltage of the low-voltage power supply is not greater than the first voltage, the boost module 7 boosts the voltage to the first voltage, and the subsequent buck module 8 reduces the first voltage to the second voltage.

[0034] In the boost module 7, the boost chip U1 is used to control the charging and discharging of the first charging and discharging unit to achieve voltage boosting. The specific types of the boost chip U1 and the first charging and discharging unit can be set according to actual needs and are not limited thereto. For example, the boost chip U1 can be an LGS6302 chip. The boost chip U1 has a first pin (feedback pin), a second pin (ground pin), a third pin (switch node pin), a fourth pin (switch node pin), a fifth pin (input pin), a sixth pin (no pin), a seventh pin (no pin), and an eighth pin (enable pin). The boost chip U1 uses the on and off of the internal switch to control the output of the third pin and the fourth pin, thereby controlling the charging and discharging of the first charging and discharging unit.

[0035] In the step-down module 8, the step-down chip U2 is used to control the charging and discharging of the second charging and discharging unit to achieve step-down. The specific types of the step-down chip U2 and the second charging and discharging unit can be set according to actual needs and are not limited. For example, the step-down chip U2 can be an LGS5145 chip. The step-down chip U2 has a first pin (bootstrap pin), a second pin (ground pin), a third pin (feedback pin), a fourth pin (enable pin), a fifth pin (input pin), and a sixth pin (switch node pin). The step-down chip U2 uses the on and off of the internal switch to control the output of the sixth pin, thereby controlling the charging and discharging of the second charging and discharging unit.

[0036] like Figure 1 As shown, in some embodiments, the first charging and discharging unit includes a first inductor L1 and a first capacitor C1, wherein the first end of the first inductor L1 serves as the power input terminal of the first charging and discharging unit and is connected to the power output terminal of the low-voltage power supply, and the first end of the first capacitor C1 serves as the power output terminal of the first charging and discharging unit and is connected to the second end of the first inductor L1, the second end of the first capacitor C1 is grounded, and the switching node pin of the boost chip U1 is connected to the second end of the first inductor L1.

[0037] It is understandable that, since the first terminal of the first inductor L1 is connected to the power output terminal of the low-voltage power supply, and the first terminal of the first capacitor C1 is connected to the second terminal of the first inductor L1, and the second terminal of the first capacitor C1 is grounded, the first inductor L1 and the first capacitor C1 form an LC charging and discharging structure. Furthermore, since the switching node pin of the boost chip U1 is connected to the second terminal of the first inductor L1, the boost chip U1 can use the output of the switching node pin to control the charging and discharging of the first inductor L1 and the first capacitor C1, thereby ensuring that the voltage at the first terminal of the first capacitor C1 is not less than the first voltage.

[0038] It should be noted that the specific type of the first inductor L1 can be set according to actual needs, and there are no restrictions on it.

[0039] The specific type of the first capacitor C1 can be set according to actual needs and there are no restrictions on it. For example, the first capacitor C1 can be 4.7μF.

[0040] The boost chip U1 adjusts the switching frequency to control the duty cycle of its switching node pins, thereby regulating the charging time of the first charging and discharging unit and controlling the voltage at the power output terminal of the first charging and discharging unit.

[0041] like Figure 1As shown, in some embodiments, the first charging and discharging unit further includes: a second capacitor C2 and a first diode D1. The first terminal of the second capacitor C2 is connected to the first terminal of the first capacitor C1, and the second terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1. The capacitance value of the second capacitor C2 is less than the capacitance value of the first capacitor C1. The anode of the first diode D1 is connected to the second terminal of the first inductor L1 and the switching node pin of the boost chip U1, respectively, and the cathode of the first diode D1 is connected to the first terminal of the first capacitor C1 and the first terminal of the second capacitor C2, respectively.

[0042] It is understandable that, since the first terminal of the second capacitor C2 is connected to the first terminal of the first capacitor C1, and the second terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1, the capacitance value of the second capacitor C2 is less than that of the first capacitor C1. This allows the first capacitor C1 to perform low-frequency filtering and energy storage functions, while the second capacitor C2 can also be used to perform high-frequency filtering and low ESL (equivalent series inductance) functions, thereby ensuring the high performance of the boost module 7.

[0043] Since the anode of the first diode D1 is connected to the second terminal of the first inductor L1 and the switching node pin of the boost chip U1 respectively, and the cathode of the first diode D1 is connected to the first terminal of the first capacitor C1 and the first terminal of the second capacitor C2 respectively, the first diode D1 can achieve unidirectional conduction from the first inductor L1 to the first capacitor C1, thereby ensuring the stable charging and discharging of the first charging and discharging unit.

[0044] It should be noted that the specific type of the second capacitor C2 can be set according to actual needs, and there is no restriction on it. For example, the first capacitor C1 can be 0.1μF.

[0045] The first diode D1 is used for unidirectional conduction along the direction from the second terminal of the first inductor L1 to the first terminal of the first capacitor C1. The specific type of the first diode D1 can be set according to actual needs and is not limited thereto.

[0046] like Figure 1 As shown, in some embodiments, the boost module 7 further includes a third capacitor C3 and a first resistor R1. The first terminal of the third capacitor C3 is connected to the second terminal of the first inductor L1, and the second terminal of the third capacitor C3 is connected to the first terminal of the first resistor R1, with the second terminal of the first resistor R1 grounded.

[0047] It is understandable that, since the first terminal of the third capacitor C3 is connected to the second terminal of the first inductor L1, and the second terminal of the third capacitor C3 is connected to the first terminal of the first resistor R1, and the second terminal of the first resistor R1 is grounded, the third capacitor C3 and the first resistor R1 work together to eliminate the oscillation of the boost chip U1 during the switching process, thereby reducing high-frequency radiation.

[0048] It should be noted that the specific type of the third capacitor C3 can be set according to actual needs, and there are no restrictions on it. For example, the third capacitor C3 can be 100pF.

[0049] The specific type of the first resistor R1 can be set according to actual needs and there are no restrictions on it. For example, the first resistor R1 can be 10R.

[0050] like Figure 1 As shown, in some embodiments, the boost module 7 further includes a second resistor R2 and a third resistor R3. The first end of the second resistor R2 is connected to the first end of the first capacitor C1 and the first end of the second capacitor C2, and the second end of the second resistor R2 is connected to the first end of the third resistor R3. The second end of the third resistor R3 is grounded, and the feedback pin of the boost chip U1 is connected to the second end of the second resistor R2.

[0051] It is understandable that, since the first end of the second resistor R2 is connected to the first end of the first capacitor C1 and the first end of the second capacitor C2 respectively, and the second end of the second resistor R2 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is grounded, the second resistor R2 and the third resistor R3 can perform voltage division sampling on the voltage at the power output terminal of the first charging and discharging unit. Furthermore, since the feedback pin of the boost chip U1 is connected to the second end of the second resistor R2, the boost chip U1 can use the sampled voltage of the second resistor R2 and the third resistor R3 to perform closed-loop charging and discharging control on the first charging and discharging unit, thereby ensuring the stable output of the power output terminal voltage of the first charging and discharging unit.

[0052] It should be noted that the second resistor R2 and the third resistor R3 are used for voltage division sampling. The specific types of the second resistor R2 and the third resistor R3 can be set according to actual needs and there are no restrictions. For example, the second resistor R2 can be 1K or 10K.

[0053] like Figure 1 As shown, in some embodiments, the boost module 7 further includes a fourth resistor R4, a fourth capacitor C4, and a fifth capacitor C5. The first terminal of the fourth resistor R4 is connected to the first terminal of the first inductor L1. The first terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively connected to the first terminals of the first inductor L1, and the second terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively grounded. The capacitance values ​​of the fourth capacitor C4 and the fifth capacitor C5 are equal. The enable pin of the boost chip U1 is connected to the second terminal of the fourth resistor R4, and the input pins of the boost chip U1 are respectively connected to the first terminals of the fourth capacitor C4 and the fifth capacitor C5.

[0054] It is understandable that since the first end of the fourth resistor R4 is connected to the first end of the first inductor L1, and the enable pin of the boost chip U1 is connected to the second end of the fourth resistor R4, the low-voltage power supply can use the fourth resistor R4 to supply power to the enable pin of the boost chip U1, thereby ensuring the stable operation of the boost chip U1.

[0055] Since the first terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively connected to the first terminal of the first inductor L1, and the second terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively grounded, the input pins of the boost chip U1 are respectively connected to the first terminals of the fourth capacitor C4 and the fifth capacitor C5, enabling the low-voltage power supply to supply power to the input pins of the boost chip U1. At the same time, the fourth capacitor C4 and the fifth capacitor C5 are used to realize the energy storage and filtering of the input voltage of the boost chip U1, thereby reducing high-frequency radiation.

[0056] It should be noted that the specific type of the fourth resistor R4 can be set according to actual needs, and there are no restrictions on it. For example, the fourth resistor R4 can be 4.7K.

[0057] The specific types of the fourth capacitor C4 and the fifth capacitor C5 can be set according to actual needs and there are no restrictions. For example, the fourth capacitor C4 can be 10μF and the fifth capacitor C5 can be 10μF.

[0058] like Figure 2 As shown, in some embodiments, the second charging / discharging unit includes a second inductor L2 and a sixth capacitor C6. The first terminal of the second inductor L2 is connected to the switching node pin of the step-down chip U2, and the first terminal of the sixth capacitor C6 serves as the power output terminal of the second charging / discharging unit and is connected to the second terminal of the second inductor L2. The second terminal of the sixth capacitor C6 is grounded.

[0059] It is understandable that, since the first end of the second inductor L2 is connected to the switching node pin of the buck chip U2, and the first end of the sixth capacitor C6 serves as the power output terminal of the second charging and discharging unit and is connected to the second end of the second inductor L2, and the second end of the sixth capacitor C6 is grounded, the second inductor L2 and the sixth capacitor C6 form an LC charging and discharging structure. Furthermore, the buck chip U2 can use the output of the switching node pin to control the charging and discharging of the second inductor L2 and the sixth capacitor C6, thereby ensuring that the voltage at the first end of the sixth capacitor C6 is not greater than the second voltage.

[0060] It should be noted that the specific type of the second inductor L2 can be set according to actual needs, and there are no restrictions on it. For example, the second inductor L2 can be 10μH.

[0061] The specific type of the sixth capacitor C6 can be set according to actual needs and there are no restrictions on it. For example, the sixth capacitor C6 can be 2.2μF.

[0062] like Figure 2 As shown, in some embodiments, the step-down module 8 further includes: a seventh capacitor C7, an eighth capacitor C8, and a second diode D2, wherein the first end of the seventh capacitor C7 and the first end of the eighth capacitor C8 are respectively connected to the first end of the sixth capacitor C6, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are respectively connected to the second end of the sixth capacitor C6, the anode of the second diode D2 is connected to the second end of the sixth capacitor C6, and the cathode of the second diode D2 is connected to the first end of the second inductor L2.

[0063] It is understandable that, since the first terminals of the seventh capacitor C7 and the eighth capacitor C8 are respectively connected to the first terminal of the sixth capacitor C6, and the second terminals of the seventh capacitor C7 and the eighth capacitor C8 are respectively connected to the second terminal of the sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 work together with the sixth capacitor C6 to achieve better energy storage and filtering in the second charging and discharging unit. At the same time, since the anode of the second diode D2 is connected to the second terminal of the sixth capacitor C6, and the cathode of the second diode D2 is connected to the first terminal of the second inductor L2, the second terminal of the sixth capacitor C6 and the switching node pin of the step-down chip U2 are unidirectionally connected by the second diode D2, thereby ensuring the stable operation of the step-down module 8.

[0064] It should be noted that the specific types of the seventh capacitor C7 and the eighth capacitor C8 can be set according to actual needs, and there are no restrictions on this. For example, the seventh capacitor C7 can be 2.2μF and the eighth capacitor C8 can be 2.2μF.

[0065] The second diode D2 is used for unidirectional conduction along the direction from the second terminal of the sixth capacitor C6 to the first terminal of the second inductor L2. The specific type of the second diode D2 can be set according to actual needs and there is no restriction on it.

[0066] like Figure 2 As shown, in some embodiments, the step-down module 8 further includes: a fifth resistor R5, a sixth resistor R6, and a ninth capacitor C9. The first end of the fifth resistor R5 is grounded, and the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6 and the feedback pin of the step-down chip U2, respectively. The second end of the sixth resistor R6 is connected to the first end of the sixth capacitor C6. The first end of the ninth capacitor C9 is connected to the bootstrap pin of the step-down chip U2, and the second end of the ninth capacitor C9 is connected to the first end of the second inductor L2.

[0067] Understandably, since the first end of the fifth resistor R5 is grounded, and the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6 and the feedback pin of the step-down chip U2 respectively, and the second end of the sixth resistor R6 is connected to the first end of the sixth capacitor C6, the fifth resistor R5 and the sixth resistor R6 can perform voltage division sampling on the voltage at the power output terminal of the second charging and discharging unit. Furthermore, the step-down chip U2 can use the sampled voltage of the fifth resistor R5 and the sixth resistor R6 to perform closed-loop charging and discharging control on the second charging and discharging unit, thereby ensuring the stable output of the power output terminal voltage of the second charging and discharging unit.

[0068] Since the first terminal of the ninth capacitor C9 is connected to the bootstrap pin of the buck chip U2, and the second terminal of the ninth capacitor C9 is connected to the first terminal of the second inductor L2, the ninth capacitor C9 can use energy storage and discharge to power the internal devices of the buck chip U2, ensuring the stable operation of the buck chip U2.

[0069] It should be noted that the specific types of the fifth resistor R5 and the sixth resistor R6 can be set according to actual needs, and there are no restrictions on this. For example, the fifth resistor R5 can be 1K and the sixth resistor R6 can be 5.1K.

[0070] The specific type of the ninth capacitor C9 can be set according to actual needs and there are no restrictions on it. For example, the ninth capacitor C9 can be 0.1μF.

[0071] This disclosure also proposes a high-voltage winch with a wide voltage input range, including a voltage regulator circuit as described in this disclosure.

[0072] Understandably, since the power input terminal of the first charging / discharging unit is connected to the power output terminal of the low-voltage power supply, and the control output terminal of the boost chip U1 is connected to the control input terminal of the first charging / discharging unit, the boost chip U1 can control the charging and discharging of the first charging / discharging unit, thereby boosting the voltage at the power output terminal of the first charging / discharging unit to a level not less than the first voltage. Similarly, since the power input terminal of the second charging / discharging unit is connected to the power output terminal of the first charging / discharging unit, and the control output terminal of the buck chip U2 is connected to the control input terminal of the second charging / discharging unit, the buck chip U2 can control the charging and discharging of the second charging / discharging unit, thereby reducing the voltage at the power output terminal of the second charging / discharging unit to a level not greater than the second voltage. Therefore, through the initial boost by the boost module 7 and the subsequent buck by the buck module 8, a wider range of input voltages can be achieved, ensuring stable power supply even when the low-voltage power supply experiences voltage fluctuations, thus guaranteeing the safe and stable operation of the device.

[0073] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0074] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A voltage regulator circuit, characterized in that, include: A boost module includes a first charging and discharging unit and a boost chip. The power input terminal of the first charging and discharging unit is connected to the power output terminal of a low-voltage power supply, and the control output terminal of the boost chip is connected to the control input terminal of the first charging and discharging unit. The boost chip is used to control the charging and discharging of the first charging and discharging unit so that the voltage at the power output terminal of the first charging and discharging unit is not less than a first voltage. A step-down module, comprising: a second charging and discharging unit and a step-down chip, wherein the power input terminal of the second charging and discharging unit is connected to the power output terminal of the first charging and discharging unit, and the control output terminal of the step-down chip is connected to the control input terminal of the second charging and discharging unit, wherein the step-down chip is used to control the charging and discharging of the second charging and discharging unit so that the voltage at the power output terminal of the second charging and discharging unit is not greater than a second voltage; Wherein, the second voltage is less than the first voltage.

2. The voltage regulator circuit according to claim 1, characterized in that, The first charging and discharging unit includes: First inductor and first capacitor; Wherein, the first end of the first inductor serves as the power input terminal of the first charging and discharging unit and is connected to the power output terminal of the low-voltage power supply, and the first end of the first capacitor serves as the power output terminal of the first charging and discharging unit and is connected to the second end of the first inductor, and the second end of the first capacitor is grounded. The switching node pin of the boost chip is connected to the second end of the first inductor.

3. The voltage regulator circuit according to claim 2, characterized in that, The first charging and discharging unit further includes: The second capacitor and the first diode; The first terminal of the second capacitor is connected to the first terminal of the first capacitor, and the second terminal of the second capacitor is connected to the second terminal of the first capacitor. The capacitance value of the second capacitor is less than the capacitance value of the first capacitor. The anode of the first diode is connected to the second terminal of the first inductor and the switching node pin of the boost chip, respectively, and the cathode of the first diode is connected to the first terminal of the first capacitor and the first terminal of the second capacitor, respectively.

4. The voltage regulator circuit according to claim 2, characterized in that, The boost module also includes: The third capacitor and the first resistor; The first terminal of the third capacitor is connected to the second terminal of the first inductor, and the second terminal of the third capacitor is connected to the first terminal of the first resistor, while the second terminal of the first resistor is grounded.

5. The voltage regulator circuit according to claim 2, characterized in that, The boost module also includes: The second and third resistors; Wherein, the first end of the second resistor is connected to the first end of the first capacitor and the first end of the second capacitor respectively, and the second end of the second resistor is connected to the first end of the third resistor, and the second end of the third resistor is grounded; The feedback pin of the boost chip is connected to the second end of the second resistor.

6. The voltage regulator circuit according to claim 2, characterized in that, The boost module also includes: The fourth resistor, the fourth capacitor, and the fifth capacitor; The first end of the fourth resistor is connected to the first end of the first inductor; The first terminal of the fourth capacitor and the first terminal of the fifth capacitor are respectively connected to the first terminal of the first inductor, and the second terminals of the fourth capacitor and the fifth capacitor are respectively grounded. The capacitance value of the fourth capacitor and the capacitance value of the fifth capacitor are equal. The enable pin of the boost chip is connected to the second end of the fourth resistor, and the input pin of the boost chip is connected to the first end of the fourth capacitor and the first end of the fifth capacitor, respectively.

7. The voltage regulator circuit according to claim 1, characterized in that, The second charge / discharge unit includes: The second inductor and the sixth capacitor; The first end of the second inductor is connected to the switching node pin of the step-down chip, and the first end of the sixth capacitor serves as the power output terminal of the second charging and discharging unit and is connected to the second end of the second inductor. The second end of the sixth capacitor is grounded.

8. The voltage regulator circuit according to claim 7, characterized in that, The step-down module also includes: The seventh capacitor, the eighth capacitor, and the second diode; Wherein, the first terminal of the seventh capacitor and the first terminal of the eighth capacitor are respectively connected to the first terminal of the sixth capacitor, and the second terminal of the seventh capacitor and the second terminal of the eighth capacitor are respectively connected to the second terminal of the sixth capacitor; The anode of the second diode is connected to the second terminal of the sixth capacitor, and the cathode of the second diode is connected to the first terminal of the second inductor.

9. The voltage regulator circuit according to claim 7, characterized in that, The step-down module also includes: The fifth resistor, the sixth resistor, and the ninth capacitor; Wherein, the first end of the fifth resistor is grounded, and the second end of the fifth resistor is connected to the first end of the sixth resistor and the feedback pin of the step-down chip, respectively; the second end of the sixth resistor is connected to the first end of the sixth capacitor. The first terminal of the ninth capacitor is connected to the bootstrap pin of the step-down chip, and the second terminal of the ninth capacitor is connected to the first terminal of the second inductor.

10. A high-voltage winch with a wide voltage input range, characterized in that, include: The voltage regulator circuit as described in any one of claims 1-9.

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