A power supply applied to an anti-lock braking system and a vehicle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FSP POWERLAND TECHNOLOGY INC
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-29
AI Technical Summary
Existing anti-lock braking system power supply units are large in size and expensive, and cannot effectively adapt to the power requirements of anti-lock braking systems under different load conditions.
The design employs a parallel connection of a linear voltage regulator circuit and a DC-DC converter circuit. The linear voltage regulator circuit provides a large current when the anti-lock braking system is working, while the DC-DC converter circuit provides basic power supply during standby. This avoids designing based on the maximum current and combines multiple transistors in series and parallel to adapt to different power requirements.
It significantly reduces the size and cost of the power supply unit, improves the reliability and applicability of the power supply, is suitable for high-current applications, and meets the stable power supply requirements of anti-lock braking systems.
Smart Images
Figure CN224305665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power supply technology, and in particular to a power supply and a vehicle used in an anti-lock braking system. Background Technology
[0002] Anti-lock Braking System (ABS) automatically adjusts the braking force on the wheels during braking to maintain some wheel rotation, thereby enabling the vehicle to maintain steering control and a certain degree of driving stability, and improving the vehicle's safety performance during emergency braking or driving on slippery roads.
[0003] In layman's terms, an anti-lock braking system (ABS) is essentially an automatic system that creates more frequent and faster braking for the driver. When it detects wheel lock-up—that is, when the wheels stop rotating due to the brake pedal being fully depressed—it automatically releases the brakes and then re-applies the brakes, keeping the wheels rotating rather than completely locking them. This also shortens the braking distance. While ABS technology is widely used in various automobiles, with the booming development of electric bicycles and motorcycles, it is gradually being adopted in those vehicles as well.
[0004] With the widespread application of anti-lock braking systems (ABS), the power supply for ABS is also being used extensively, converting the low- and medium-voltage battery voltage in the vehicle into 12V power for the ABS to meet the control requirements of the ABS.
[0005] Common power supplies for anti-lock braking systems (ABS) can be divided into isolated transistor power supplies and non-isolated transistor power supplies. Isolated transistor power supplies typically use transformers as isolation devices, resulting in a larger overall size and higher cost. Non-isolated transistor power supplies typically use a buck converter topology to convert the vehicle's battery voltage to 12V for the ABS system. They are usually designed and selected based on the maximum current required by the ABS system, resulting in a larger overall size and higher cost. Utility Model Content
[0006] The present invention aims to provide a power supply and a vehicle for use in anti-lock braking systems.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] A power supply for use in an anti-lock braking system includes a linear voltage regulator circuit and a DC-DC converter circuit. The linear voltage regulator circuit and the DC-DC converter circuit are connected in parallel. The first terminal of the linear voltage regulator circuit and the DC-DC converter circuit is connected to the input voltage, and the second terminal of the linear voltage regulator circuit and the DC-DC converter circuit is connected to the output voltage.
[0009] In one specific embodiment, the linear voltage regulator circuit includes a transistor, a feedback sampling module, a reference voltage generation module, an error amplification module, and a transistor control module. The transistor is connected in series between the input voltage and the output voltage. The first terminal of the feedback sampling module is connected to the output voltage, the second terminal of the feedback sampling module is connected to the first terminal of the error amplification module, the first terminal of the reference voltage generation module is connected to the second terminal of the error amplification module, the third terminal of the error amplification module is connected to the first terminal of the transistor control module, and the second terminal of the transistor control module is connected to the control terminal of the transistor.
[0010] In one specific embodiment, the linear voltage regulator circuit includes multiple transistors, a feedback sampling module, a reference voltage generation module, an error amplification module, and one or more transistor control modules. The multiple transistors are connected in series or parallel between the input voltage and the output voltage. The first terminal of the feedback sampling module is connected to the output voltage, the second terminal of the feedback sampling module is connected to the first terminal of the error amplification module, the first terminal of the reference voltage generation module is connected to the second terminal of the error amplification module, and the third terminal of the error amplification module is connected to the first terminal of one or more transistor control modules. The second terminals of the multiple transistor control modules are respectively connected to the control terminal of one of the multiple transistors, or the second terminal of one transistor control module is connected to the control terminals of the multiple transistors.
[0011] In one specific embodiment, the feedback sampling module includes a first resistor and a second resistor. The first end of the first resistor is connected to the output voltage, the second end of the first resistor is grounded through the second resistor, and the second end of the first resistor is connected to the first end of the error amplification module.
[0012] In one specific embodiment, the error amplification module includes an amplifier, the first input terminal of the amplifier is connected to the second terminal of the first resistor, the second input terminal of the amplifier is connected to the first terminal of the reference voltage generation module, and the output terminal of the amplifier is connected to the first terminal of the transistor control module.
[0013] Optionally, the power supply for the anti-lock braking system further includes a first diode, the second terminal of the linear voltage regulator circuit is connected to the anode of the first diode, and the cathode of the first diode is connected to the output voltage.
[0014] Optionally, the power supply for the anti-lock braking system further includes a first filter circuit, which is connected between the input voltage and the first terminal of the linear regulator circuit.
[0015] Optionally, the power supply for the anti-lock braking system further includes a second filter circuit, which is connected between the second terminal of the linear voltage regulator circuit and the output voltage.
[0016] Optionally, the first filter circuit and the second filter circuit are capacitor filters, π filters, single-stage LC filters, or multi-stage LC filters.
[0017] This utility model also provides a vehicle, including the aforementioned power supply for an anti-lock braking system, and further including the anti-lock braking system and a battery. The anti-lock braking system and the battery are located in the vehicle. The battery is connected to a first terminal of the power supply for the anti-lock braking system, and a second terminal of the power supply for the anti-lock braking system is connected to the anti-lock braking system.
[0018] Beneficial effects: This utility model provides a power supply and vehicle for use with an anti-lock braking system (ABS). When the ABS is activated, a linear voltage regulator circuit operates; when the ABS is not activated, a DC-DC converter circuit provides basic power. It eliminates the need for design and selection based on the maximum current required by the ABS, significantly reducing the power supply size and consequently the overall vehicle size and cost. Multiple transistors connected in series can withstand a larger voltage difference between input and output, broadening the application range of this power supply. Simultaneously, the reduced voltage across each transistor further improves reliability. Multiple transistors connected in parallel can withstand a larger load current, suitable for high-current applications, further enhancing power supply reliability.
[0019] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description
[0020] Figure 1 This is a structural block diagram of a power supply for an anti-lock braking system according to the present invention.
[0021] Figure 2 This is a structural block diagram of a first specific embodiment of a linear voltage regulator circuit.
[0022] Figure 3 for Figure 2 A schematic diagram of a medium-linear voltage regulator circuit.
[0023] Figure 4 This is a structural block diagram of a second specific embodiment of a linear voltage regulator circuit.
[0024] Figure 5 This is a structural block diagram of a third specific embodiment of a linear voltage regulator circuit.
[0025] Figure 6 This is a circuit diagram of a first specific embodiment of the first filter circuit and the second filter circuit.
[0026] Figure 7 This is a circuit diagram of a second specific embodiment of the first filter circuit and the second filter circuit.
[0027] Figure 8 This is a circuit diagram of a third specific embodiment of the first filter circuit and the second filter circuit.
[0028] Figure 9 This is a circuit diagram of a fourth specific embodiment of the first filter circuit and the second filter circuit. Detailed Implementation
[0029] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0030] In practical applications, when the anti-lock braking system (ABS) is not in operation, the power supply output for it is usually very small, operating primarily under no-load or light-load conditions. However, when the ABS is activated, the power supply needs to output a large current instantaneously, lasting for tens to hundreds of milliseconds. This application, taking into account these characteristics, proposes a power supply and vehicle for use with ABS.
[0031] Figure 1 This is a structural block diagram of a power supply for an anti-lock braking system according to this utility model. Figure 1 As shown, the power supply of this utility model for an anti-lock braking system includes a linear voltage regulator circuit 1 and a DC-DC converter circuit 2. The linear voltage regulator circuit 1 and the DC-DC converter circuit 2 are connected in parallel. The first terminals of the linear voltage regulator circuit 1 and the DC-DC converter circuit 2 are connected to the input voltage V. in The second terminal of the linear voltage regulator circuit 1 is connected to the output voltage V of the DC-DC converter circuit 2. o .
[0032] More specifically, when the anti-lock braking system is in standby mode, the output voltage of the linear regulator circuit 1 is lower than the output voltage of the DC-DC converter circuit 2. Therefore, the linear regulator circuit 1 does not operate, and the DC-DC converter circuit 2 converts the input voltage V... in Converted to output voltage V o The power supply is maintained during standby of the anti-lock braking system (ABS). When the ABS is in operation, it requires a large current instantaneously, causing the DC-DC converter 2 to disconnect and cease operation. At this time, the linear voltage regulator 1 intervenes to provide the instantaneous large current. In other words, the linear voltage regulator 1 operates when the ABS is activated, and relies on the DC-DC converter 2 for basic power supply when the ABS is not activated. The linear voltage regulator 1 is designed according to the maximum current required by the ABS during actual operation to meet the instantaneous current demand during ABS operation.
[0033] Optionally, the power supply of the present invention for an anti-lock braking system may further include an overcurrent protection circuit (not shown in the figure). The overcurrent protection circuit is connected to the DC-DC converter circuit 2. When the anti-lock braking system is working, since the anti-lock braking system requires a large current at the moment of operation, the overcurrent protection circuit detects the large current, causing the DC-DC converter circuit 2 to instantly enter overcurrent protection and disconnect.
[0034] Optionally, the power supply for an anti-lock braking system according to this invention may further include a diode D1, with the second terminal of the linear voltage regulator circuit 1 connected to the anode of the diode D1, and the cathode of the diode D1 connected to the output voltage V. o In this circuit, diode D1 isolates the two outputs, so that the power is mainly provided by DC-DC converter 2 when the power is low and the linear regulator circuit 1 does not work, while the power is provided by the linear regulator circuit 1 when the power is high.
[0035] As an example, the DC-DC converter circuit 2 can be a DC-DC converter topology such as a buck converter topology.
[0036] Furthermore, Figure 2 This is a structural block diagram of a first specific embodiment of the linear voltage regulator circuit 1. Figure 2 As shown, the linear voltage regulator circuit 1 includes a transistor Q1, a feedback sampling module 11, a reference voltage generation module 12, an error amplification module 13, and a transistor control module 14. The transistor Q1 is connected in series with the input voltage V. in With output voltage V o Between them, the first terminal of the feedback sampling module 11 is connected to the output voltage V. oThe second end of the feedback sampling module 11 is connected to the first end of the error amplification module 13, the first end of the reference voltage generation module 12 is connected to the second end of the error amplification module 13, the third end of the error amplification module 13 is connected to the first end of the transistor control module 14, and the second end of the transistor control module 14 is connected to the control terminal of the transistor Q1.
[0037] More specifically, the feedback sampling module 11 samples the output voltage V. o The sample is taken and fed back to the first terminal of the error amplification module 13; the reference voltage generation module 12 generates the reference voltage V. ref The output is sent to the second terminal of the error amplifier module 13; the error amplifier module 13 compares the output voltage V. o With reference voltage V ref The error signal is amplified and output to the transistor control module 14. The transistor control module 14 outputs the output signal of the error amplification module 13 to the control terminal of transistor Q1, causing transistor Q1 to operate in the linear region. By adjusting the on-state voltage of transistor Q1, the on-state impedance of transistor Q1 is changed, ultimately achieving different input voltages V. in To obtain a stable output voltage V under different load current conditions o This is to provide a stable voltage to the anti-lock braking system.
[0038] Please refer to Figure 3 As an example, the feedback sampling module 11 includes resistors R1 and R2, with the first terminal of resistor R1 connected to the output voltage V. o The second end of resistor R1 is grounded through resistor R2, and the second end of resistor R1 is connected to the first end of error amplifier module 13.
[0039] Please refer to Figure 3 As an example, the error amplification module 13 includes an amplifier A1, the first input terminal of the amplifier A1 is connected to the second terminal of the resistor R1, the second input terminal of the amplifier A1 is connected to the first terminal of the reference voltage generation module 12, and the output terminal of the amplifier A1 is connected to the first terminal of the transistor control module 14.
[0040] Optionally, the reference voltage generation module 12 may include, but is not limited to, topologies that can generate a stable reference voltage, such as a bandgap reference-based topology or an operational amplifier-based self-biased reference topology. This application is not limited to these.
[0041] Optionally, the transistor control module 14 may adopt common transistor driving topologies, including but not limited to direct coupling driving topologies, bootstrap driving topologies, etc., and this application is not limited thereto.
[0042] Figure 4This is a structural block diagram of a second specific embodiment of the linear voltage regulator circuit 1. (See diagram below.) Figure 4 As shown, the linear voltage regulator circuit 1 includes n transistors Q1 to Qn, a feedback sampling module 11, a reference voltage generation module 12, an error amplification module 13, and n transistor control modules 141 to 14n. Transistors Q1 to Qn are connected in series to the input voltage V. in With output voltage V o Between them, the first terminal of the feedback sampling module 11 is connected to the output voltage V. o The second terminal of the feedback sampling module 11 is connected to the first terminal of the error amplification module 13. The first terminal of the reference voltage generation module 12 is connected to the second terminal of the error amplification module 13. The third terminal of the error amplification module 13 is connected to the first terminal of the transistor control modules 141 to 14n. The second terminals of the transistor control modules 141 to 14n are respectively connected to the control terminal of one of the transistors Q1 to Qn. Here, n is an integer greater than 1.
[0043] More specifically, the feedback sampling module 11 samples the output voltage V. o The sample is taken and fed back to the first terminal of the error amplification module 13; the reference voltage generation module 12 generates the reference voltage V. ref The output is sent to the second terminal of the error amplifier module 13; the error amplifier module 13 compares the output voltage V. o With reference voltage V ref The error signal is amplified and output to transistor control modules 141-14n. Transistor control modules 141-14n send the output signal from error amplification module 13 to the control terminals of transistors Q1-Qn, causing transistors Q1-Qn to operate in the linear region. By adjusting the on-state voltage of transistors Q1-Qn, the on-state impedance of transistors Q1-Qn is changed, ultimately achieving different input voltages V... in To obtain a stable output voltage V under different load current conditions o This is to provide a stable voltage to the anti-lock braking system.
[0044] Furthermore, the transistor control modules 141-14n ensure that the voltage across each transistor is equal, thus evenly distributing the total voltage difference between the input and output.
[0045]
[0046] Where V1 to Vn are the voltages across transistors Q1 to Qn, respectively.
[0047] In this specific embodiment, multiple transistors connected in series can withstand a larger voltage difference between the input and output, making the power supply proposed in this application for anti-lock braking systems more widely applicable; at the same time, the voltage across each transistor is reduced, further improving reliability. Furthermore, the reduced voltage across each transistor allows for a more even distribution of the total voltage difference and power among all transistors, further enhancing reliability.
[0048] More specifically, Figure 4 The system includes a feedback sampling module 11, a reference voltage generation module 12, an error amplification module 13, and transistor control modules 141-14n. Figure 3 The structure and function of the corresponding modules are the same, so they will not be described again here.
[0049] Figure 5 This is a structural block diagram of a third specific embodiment of the linear voltage regulator circuit 1. (See diagram below.) Figure 5 As shown, the linear voltage regulator circuit 1 includes n transistors Q1 to Qn, a feedback sampling module 11, a reference voltage generation module 12, an error amplification module 13, and a transistor control module 14. Transistors Q1 to Qn are connected in parallel to the input voltage V. in With output voltage V o Between them, the first terminal of the feedback sampling module 11 is connected to the output voltage V. o The second terminal of the feedback sampling module 11 is connected to the first terminal of the error amplification module 13, the first terminal of the reference voltage generation module 12 is connected to the second terminal of the error amplification module 13, the third terminal of the error amplification module 13 is connected to the first terminal of the transistor control module 14, and the second terminal of the transistor control module 14 is connected to the control terminals of transistors Q1 to Qn. Here, n is an integer greater than 1.
[0050] More specifically, the feedback sampling module 11 samples the output voltage V. o The sample is taken and fed back to the first terminal of the error amplification module 13; the reference voltage generation module 12 generates the reference voltage V. ref The output is sent to the second terminal of the error amplifier module 13; the error amplifier module 13 compares the output voltage V. o With reference voltage V ref The error signal is amplified and output to the transistor control module 14. The transistor control module 14 sends the output signal of the error amplification module 13 to the control terminals of transistors Q1 to Qn, causing transistors Q1 to Qn to operate in the linear region. By adjusting the on-state voltage of transistors Q1 to Qn, the on-state impedance of transistors Q1 to Qn is changed, ultimately achieving different input voltages V. in To obtain a stable output voltage V under different load current conditions o This is to provide a stable voltage to the anti-lock braking system.
[0051] Optionally, in this specific embodiment, n transistor control modules 141 to 14n may also be included. The second terminal of each transistor control module 141 to 14n is connected to the control terminal of one of the transistors Q1 to Qn, so as to realize individual control of each transistor.
[0052] In this specific embodiment, multiple transistors connected in parallel can withstand a larger load current, making them suitable for high-current applications and further improving the reliability of the power supply.
[0053] More specifically, Figure 5 The feedback sampling module 11, the reference voltage generation module 12, the error amplification module 13, and the transistor control module 14 are connected. Figure 3 The structure and function of the corresponding modules are the same, so they will not be described again here.
[0054] exist Figures 2 to 5 In a specific embodiment, transistors Q1 to Qn are MOSFETs. It should be noted that the transistors in this application can also be bipolar transistors, IGBTs, etc.
[0055] Please continue to refer to this. Figure 1 The power supply for an anti-lock braking system according to this application may further include a first filter circuit 3, which is connected to the input voltage V. in Between the first terminal of the linear voltage regulator circuit 1 and the first terminal, it is used to filter the input side.
[0056] Optionally, the power supply for an anti-lock braking system may further include a second filter circuit 4, which is connected to the second terminal of the linear voltage regulator circuit 1 and the output voltage V. o Between these two points, the output side is filtered.
[0057] For example, please refer to Figure 6 The first filter circuit 3 and the second filter circuit 4 can be capacitor filters. For example... Figure 6 As shown, the first filter circuit 3 may include a capacitor C1, the first terminal of which is connected to the input voltage V. in The second terminal of capacitor C1 is grounded, connected to the first terminal of the linear voltage regulator circuit 1. As an example, the second filter circuit 4 may include capacitor C2, with the first terminal of capacitor C2 connected to the output voltage V. o The second terminal of the linear voltage regulator circuit 1 is connected to the ground, and the second terminal of the capacitor C2 is connected to the ground.
[0058] Alternatively, please refer to Figure 7 The first filter circuit 3 and the second filter circuit 4 can also be Π filters. For example... Figure 7 As shown, the first filter circuit 3 includes capacitor C3, capacitor C4, inductor L1, and input voltage V. inThe first terminal of capacitor C3 is connected to the first terminal of inductor L1. The second terminal of capacitor C3 is grounded. The second terminal of inductor L1 is connected to the first terminal of linear regulator circuit 1, and the second terminal of inductor L1 is grounded through capacitor C4. The second filter circuit 4 includes capacitors C5 and C6, and inductor L2. The second terminal of linear regulator circuit 1 is connected to the first terminal of capacitor C5 and the first terminal of inductor L2. The second terminal of capacitor C5 is grounded, and the second terminal of inductor L2 is connected to the output voltage V. o The second terminal of inductor L2 is grounded through capacitor C6.
[0059] Alternatively, please refer to Figure 8 The first filter circuit 3 and the second filter circuit 4 can also be a single-stage LC filter. For example... Figure 8 As shown, the first filter circuit 3 includes an inductor L3 and a capacitor C7, with an input voltage V. in The first terminal of inductor L3 is connected, and the second terminal of inductor L3 is connected to the first terminal of linear voltage regulator circuit 1. The second terminal of inductor L3 is grounded through capacitor C7. The second filter circuit 4 includes inductor L4 and capacitor C8. The second terminal of linear voltage regulator circuit 1 is connected to the first terminal of inductor L4, and the second terminal of inductor L4 is connected to the output voltage V. o The first terminal of inductor L4 is grounded through capacitor C8.
[0060] Alternatively, please refer to Figure 9 The first filter circuit 3 and the second filter circuit 4 can also be multi-stage LC filters. Taking a two-stage filter as an example, such as... Figure 9 As shown, the first filter circuit 3 includes inductors L5 and L6, capacitors C9 and C10, and the input voltage V... in The first terminal of inductor L5 is connected, and the second terminal of inductor L5 is grounded through capacitor C9. The second terminal of inductor L5 is connected to the first terminal of inductor L6, and the second terminal of inductor L6 is connected to the first terminal of linear regulator circuit 1. The second terminal of inductor L6 is grounded through capacitor C10. The second filter circuit 4 includes inductors L7 and L8, capacitors C11 and C12. The second terminal of linear regulator circuit 1 is connected to the first terminal of inductor L7, and the first terminal of inductor L7 is grounded through capacitor C11. The second terminal of inductor L7 is connected to the first terminal of inductor L8, and the second terminal of inductor L8 is connected to the output voltage V. o The first terminal of inductor L8 is grounded through capacitor C12.
[0061] This utility model also provides a vehicle, including the aforementioned power supply for an anti-lock braking system, and further including the anti-lock braking system and a battery. The anti-lock braking system and the battery are located in the vehicle. The battery is connected to a first terminal of the power supply for the anti-lock braking system, and a second terminal of the power supply for the anti-lock braking system is connected to the anti-lock braking system.
[0062] The power supply used in the anti-lock braking system provides power to the anti-lock braking system.
[0063] Wherein, the input voltage V in It is usually powered by a battery.
[0064] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A power supply for use in an anti-lock braking system, characterized in that, It includes a linear voltage regulator circuit and a DC-DC converter circuit. The linear voltage regulator circuit and the DC-DC converter circuit are connected in parallel. The first terminal of the linear voltage regulator circuit and the DC-DC converter circuit are connected to the input voltage, and the second terminal of the linear voltage regulator circuit and the DC-DC converter circuit are connected to the output voltage.
2. The power supply for use in an anti-lock braking system as described in claim 1, characterized in that, The linear voltage regulator circuit includes a transistor, a feedback sampling module, a reference voltage generation module, an error amplification module, and a transistor control module. The transistor is connected in series between the input voltage and the output voltage. The first terminal of the feedback sampling module is connected to the output voltage, the second terminal of the feedback sampling module is connected to the first terminal of the error amplification module, the first terminal of the reference voltage generation module is connected to the second terminal of the error amplification module, the third terminal of the error amplification module is connected to the first terminal of the transistor control module, and the second terminal of the transistor control module is connected to the control terminal of the transistor.
3. The power supply for use in an anti-lock braking system as described in claim 1, characterized in that, The linear voltage regulator circuit includes multiple transistors, a feedback sampling module, a reference voltage generation module, an error amplification module, and one or more transistor control modules. The multiple transistors are connected in series or parallel between the input voltage and the output voltage. The first terminal of the feedback sampling module is connected to the output voltage, the second terminal of the feedback sampling module is connected to the first terminal of the error amplification module, the first terminal of the reference voltage generation module is connected to the second terminal of the error amplification module, and the third terminal of the error amplification module is connected to the first terminal of one or more transistor control modules. The second terminals of the multiple transistor control modules are respectively connected to the control terminal of one of the multiple transistors, or the second terminal of one transistor control module is connected to the control terminals of the multiple transistors.
4. A power supply for use in an anti-lock braking system as described in claim 2 or 3, characterized in that, The feedback sampling module includes a first resistor and a second resistor. The first end of the first resistor is connected to the output voltage, and the second end of the first resistor is grounded through the second resistor. The second end of the first resistor is connected to the first end of the error amplification module.
5. The power supply for use in an anti-lock braking system as described in claim 4, characterized in that, The error amplification module includes an amplifier, the first input terminal of which is connected to the second terminal of the first resistor, the second input terminal of which is connected to the first terminal of the reference voltage generation module, and the output terminal of which is connected to the first terminal of the transistor control module.
6. The power supply for use in an anti-lock braking system as described in claim 1, characterized in that, It also includes a first diode, the second terminal of which is connected to the anode of the first diode, and the cathode of the first diode is connected to the output voltage.
7. The power supply for use in an anti-lock braking system as described in claim 1, characterized in that, It also includes a first filter circuit, which is connected between the input voltage and the first terminal of the linear regulator circuit.
8. The power supply for use in an anti-lock braking system as described in claim 1, characterized in that, It also includes a second filter circuit, which is connected between the second terminal of the linear regulator circuit and the output voltage.
9. A power supply for use in an anti-lock braking system as described in claim 7 or 8, characterized in that, The first filter circuit and the second filter circuit are capacitor filters, π filters, single-stage LC filters, or multi-stage LC filters.
10. A means of transportation, characterized in that, The device includes a power supply for an anti-lock braking system as described in any one of claims 1-9, and further includes an anti-lock braking system and a battery, wherein the anti-lock braking system and the battery are located in the vehicle, the battery is connected to a first terminal of the power supply for the anti-lock braking system, and a second terminal of the power supply for the anti-lock braking system is connected to the anti-lock braking system.