A power supply control chip

Abstract

This utility model relates to the field of control chip technology and discloses a power control chip, including a baseboard. A feedback sampling unit, an error amplifier, a load trend prediction unit, and a collaborative control logic unit are disposed on one side of the upper end of the baseboard. A current sampling unit, logic and drive circuits, and a multi-mode protection circuit are disposed in the middle of the upper end of the baseboard. In this utility model, by integrating the load trend prediction unit and the collaborative control logic unit into the power control chip, the traditional passive response is transformed into active prediction. When a sudden change in load is about to occur, the prediction unit can sense the trend in advance and notify the collaborative control logic, enabling it to proactively adjust the PWM output frequency. Thus, when the load change actually occurs, the system has already entered the optimal operating state in advance, effectively suppressing output voltage overshoot and drop, significantly improving dynamic response speed, and enhancing system stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of control chip technology, and in particular to a power control chip. Background Technology

[0002] Power control chips are the core of power conversion and management circuits in modern electronic devices, serving as their "heart" and "brain." Their primary mission is to precisely and efficiently control and manage electrical energy, specifically through intelligent guidance of energy flow, flexible transformation of energy form, and rational power allocation. Through complex internal circuits and control algorithms, these chips can stably and accurately convert unstable input power from sources such as batteries or mains power, outputting the different voltages or currents required by various functional modules within the device (such as the CPU, memory, and sensors), providing a solid and reliable energy guarantee for the stable operation of the entire system.

[0003] However, most existing power control chips use traditional feedback control mechanisms, which can only passively respond to the current state of the load. When the load changes abruptly, the output voltage will have a large overshoot or drop. The dynamic response speed is slow, and there is a lack of ability to predict the future trend of the load, which leads to a decrease in the stability of the system power rail. This may cause logic errors, data loss, or even hardware damage in sensitive back-end circuits, seriously affecting the reliability and safety of the entire electronic system.

[0004] Therefore, those skilled in the art have provided a power control chip to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a power control chip that integrates a load trend prediction unit and a collaborative control logic unit. This transforms the traditional passive response into an active prediction. When a sudden change in load is about to occur, the prediction unit can sense the trend in advance and notify the collaborative control logic, enabling it to proactively adjust the PWM output frequency. As a result, when the load change actually occurs, the system has already entered the optimal operating state, effectively suppressing overshoot and drop in output voltage, significantly improving dynamic response speed, and enhancing system stability and reliability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A power control chip includes a baseboard. A feedback sampling unit, an error amplifier, a load trend prediction unit, and a collaborative control logic unit are disposed on one side of the upper end of the baseboard. A current sampling unit, a logic and drive circuit, and a multi-mode protection circuit are disposed in the middle of the upper end of the baseboard. A PWM and drive generator is disposed on the other side of the upper end of the baseboard.

[0008] Through the above technical solution, the chip integrates a load trend prediction unit and a collaborative control logic unit into the power control chip, transforming the traditional passive response into active prediction. When the load is about to undergo a sudden change, the prediction unit can sense the trend in advance and notify the collaborative control logic, so that it can proactively adjust the PWM output frequency. Thus, when the load change actually occurs, the system has already entered the optimal working state in advance, effectively suppressing the overshoot and drop of the output voltage, significantly improving the dynamic response speed, and enhancing the system stability and reliability.

[0009] Furthermore, the load trend prediction unit analyzes the rate of change of the load current to predict the trend of increasing or decreasing load, and outputs the prediction result to the collaborative control logic unit in the form of a digital signal.

[0010] Through the above technical solutions, the control system can be upgraded from passive response to active prediction. When the load is predicted to increase, the output power is increased in advance to effectively suppress voltage drop. When the load is predicted to decrease, the power is reduced in advance to prevent voltage overshoot. This significantly improves the dynamic response speed of the power supply, greatly reduces the ripple and fluctuation of the output voltage, and greatly improves the stability and accuracy of the power rail, providing a more reliable energy guarantee for sensitive downstream circuits.

[0011] Furthermore, the multi-mode protection circuit includes an over-temperature protection sub-circuit, an over-voltage protection sub-circuit, and an over-current protection sub-circuit, which are connected to the logic AND drive circuit through a logic OR gate.

[0012] Through the above technical solution, a rapid and reliable linkage of multiple protection mechanisms for over-temperature, over-voltage, and over-current is achieved. When any protection sub-circuit is triggered, the PWM output will be immediately shut down through a logic OR gate, forming a comprehensive and three-dimensional safety protection. This simplifies the protection logic and ensures that the power supply can be cut off as quickly as possible under any abnormal operating conditions. It effectively prevents the chip and peripheral components from being damaged due to overheating, over-voltage, or over-current, and greatly enhances the safety of the power control chip.

[0013] Furthermore, both the feedback sampling unit and the current sampling unit are high-precision resistance sampling circuits, and their sampling signals are respectively sent to the error amplifier and the load trend prediction unit;

[0014] The above technical solution uses a high-precision resistor sampling circuit to construct a feedback sampling unit and a current sampling unit, respectively, providing the system with a high signal-to-noise ratio raw sampling signal and ensuring the accuracy of subsequent processing.

[0015] This utility model has the following beneficial effects:

[0016] 1. The present invention proposes a power control chip that integrates a load trend prediction unit and a collaborative control logic unit, transforming the traditional passive response into an active prediction. When a sudden change in load is about to occur, the prediction unit can sense the trend in advance and notify the collaborative control logic, enabling it to proactively adjust the PWM output frequency. Thus, when the load change actually occurs, the system has already entered the optimal working state in advance, effectively suppressing the overshoot and drop of the output voltage, significantly improving the dynamic response speed, and enhancing the stability and reliability of the system. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a power control chip proposed in this utility model;

[0018] Figure 2 This is a circuit diagram of a power control chip proposed in this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base plate; 2. Feedback sampling unit; 3. Error amplifier; 4. Load trend prediction unit; 5. Current sampling unit; 6. Cooperative control logic unit; 7. Logic and drive circuit; 8. Multi-mode protection circuit; 9. PWM and drive generator. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1-2 This utility model provides a specific embodiment: a power control chip, including a base plate 1, a feedback sampling unit 2, an error amplifier 3, a load trend prediction unit 4 and a collaborative control logic unit 6 are arranged on one side of the upper end of the base plate 1, a current sampling unit 5, a logic and drive circuit 7 and a multi-mode protection circuit 8 are arranged in the middle of the upper end of the base plate 1, and a PWM and drive generator 9 is arranged on the other side of the upper end of the base plate 1.

[0023] This chip integrates a load trend prediction unit 4 and a collaborative control logic unit 6 into the power control chip, transforming the traditional passive response into an active prediction. When a sudden change in load is about to occur, the prediction unit can sense the trend in advance and notify the collaborative control logic, enabling it to proactively adjust the PWM output frequency. As a result, when the load change actually occurs, the system has already entered the optimal working state in advance, effectively suppressing the overshoot and drop of the output voltage, significantly improving the dynamic response speed, and enhancing the stability and reliability of the system.

[0024] The load trend prediction unit 4 analyzes the rate of change of load current to predict the increase or decrease trend of load, and outputs the prediction result to the collaborative control logic unit 6 in the form of a digital signal. The control system can upgrade from passive response to active prediction. When an increase in load is predicted, the output power is increased in advance to effectively suppress voltage drop. When a decrease in load is predicted, the power is reduced in advance to prevent voltage overshoot. This significantly improves the dynamic response speed of the power supply, greatly reduces the ripple and fluctuation of the output voltage, and greatly improves the stability and accuracy of the power rail, providing a more reliable energy guarantee for downstream sensitive circuits. The multi-mode protection circuit 8 includes an over-temperature protection sub-circuit, an over-voltage protection sub-circuit, and an over-current protection sub-circuit. The three are connected to the logic AND drive circuit 7 through a logic OR gate to realize... The system features rapid and reliable linkage of multiple protection mechanisms against over-temperature, over-voltage, and over-current. Triggering any protection sub-circuit immediately shuts off the PWM output via a logic OR gate, forming a comprehensive and three-dimensional safety protection system. This simplifies the protection logic and ensures the fastest possible power cut-off under any abnormal operating conditions, effectively preventing damage to the chip and peripheral components due to overheating, over-voltage, or over-current. This significantly enhances the safety of the power control chip. Both feedback sampling unit 2 and current sampling unit 5 are high-precision resistor sampling circuits. Their sampling signals are respectively sent to error amplifier 3 and load trend prediction unit 4. The high-precision resistor sampling circuits used to construct feedback sampling unit 2 and current sampling unit 5 provide the system with high signal-to-noise ratio raw sampling signals, ensuring the accuracy of subsequent processing.

[0025] Working Principle: During operation, the chip first acquires the output voltage in real time through the feedback sampling unit 2 and compares it with the internal reference voltage. The error signal is amplified by the error amplifier 3 and then sent to the PWM and drive generator 9. Simultaneously, the current sampling unit 5 acquires the load current in real time and sends this signal to the load trend prediction unit 4. This unit analyzes the rate of change of current to predict the upcoming increase or decrease in load and sends the prediction result to the collaborative control logic unit 6 in digital signal form. The collaborative control logic unit 6 combines the signal from the error amplifier 3 and the load trend prediction result to perform collaborative optimization control on the PWM and drive generator 9, achieving proactive predictive adjustment. When the load changes abruptly, the system adjusts the PWM output in advance, effectively suppressing voltage overshoot or drop. The logic and drive circuit 7 receives the PWM signal and drives the power switching transistor. The multi-mode protection circuit 8 monitors various parameters in real time; if any abnormality occurs, it quickly cuts off the drive to ensure system safety.

[0026] The following points should be noted in this article:

[0027] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0028] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power control chip, comprising a baseboard (1), characterized in that: The upper side of the base plate (1) is provided with a feedback sampling unit (2), an error amplifier (3), a load trend prediction unit (4) and a collaborative control logic unit (6). The upper middle part of the base plate (1) is provided with a current sampling unit (5), a logic and drive circuit (7) and a multi-mode protection circuit (8). The other side of the upper end of the base plate (1) is provided with a PWM and drive generator (9).

2. The power control chip according to claim 1, characterized in that: The load trend prediction unit (4) predicts the increase or decrease trend of the load by analyzing the rate of change of the load current, and outputs the prediction result to the collaborative control logic unit (6) in the form of a digital signal.

3. A power control chip according to claim 1, characterized in that: The multi-mode protection circuit (8) includes an over-temperature protection sub-circuit, an over-voltage protection sub-circuit, and an over-current protection sub-circuit, which are connected to the logic AND drive circuit (7) through a logic OR gate.

4. A power control chip according to claim 1, characterized in that: The feedback sampling unit (2) and the current sampling unit (5) are both high-precision resistance sampling circuits, and their sampling signals are respectively sent to the error amplifier (3) and the load trend prediction unit (4).

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