BOOST power supply module with wide input and high power output

Abstract

The utility model relates to the technical field of power electronics and power management, in particular to a BOOST power module with wide input and high power output, which comprises an input and protection module, a control and drive module, a power conversion and storage module and an output rectification and filtering module. According to the utility model, the classical non-synchronous rectification BOOST chip of FP5139 and the MOS external BOOST chip are used, and two groups of push-pull circuits are used to drive four MOS transistors connected in parallel, so that the switching speed is improved, the conduction internal resistance is reduced, and the energy conversion efficiency and the conduction current are remarkably enhanced. Specifically, four MOS tubes are connected in parallel, so that the over-current capability is enhanced, the conduction internal resistance is reduced, and the output power can reach up to 60W under the input voltage as low as 2-5V. In addition, in the design, two high-power inductors and two high-power diodes are connected in parallel, so that the overcurrent capability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics and power management, in particular to a BOOST power module with wide input and high power output. Background Art

[0002] With the trend of miniaturization and intelligence of electronic devices, as well as the widespread application of portable devices, the demand for power converters is growing, especially the ability to provide high power output under low voltage input conditions has become particularly important. In recent years, with the advancement of battery technology, the operating voltage of many devices has been reduced, such as the nominal voltage of a single lithium-ion battery is 3.7V, and these devices often need to boost low voltage to a higher level, such as 12V, during operation to meet the power supply needs of various internal components. However, traditional DC-DC boost converters often face the challenge of limited power output when processing low input voltage to high voltage output conversion, especially when the input voltage is close to the minimum threshold, which limits their effectiveness in applications requiring high power.

[0003] The DC-DC boost converter technology currently available on the market can achieve conversion from low voltage to high voltage in some cases, but when the input voltage is in the range of 1.8V to 3V, its power output is generally difficult to exceed 10W, which is undoubtedly a significant technical bottleneck for those devices that need to maintain high-performance operation under low-power conditions. For example, high-performance mobile devices, drones, portable medical devices, etc., these applications still need to ensure sufficient power supply to maintain operation under low-power conditions, which directly leads to the market's urgent need for power solutions that can provide higher power output under such conditions.

[0004] To address the above problems, existing solutions mostly rely on improving converter efficiency or adopting more complex control strategies, but these methods are often limited by cost, increased complexity, and performance degradation under extreme conditions. In addition, as a key component in DC-DC converters, MOS tubes have a high on-resistance at low gate drive voltages, which directly affects conversion efficiency and output current capability, thereby limiting power increases. Utility Model Content

[0005] The utility model aims to provide a BOOST power supply module with wide input and high power output, so as to solve the problem that the power output of the traditional BOOST power supply is limited under low voltage input.

[0006] To achieve the above object, the utility model provides a BOOST power module with wide input and high power output, including an input and protection module, a control and drive module, a power conversion and storage module and an output rectification and filtering module, wherein the control and drive module includes an FP5139 chip U1 and a dual push-pull circuit, the power conversion and storage module includes a parallel MOS tube array and a dual inductor, and the output rectification and filtering module includes:

[0007] The FP5139 chip U1 output pin is connected to a dual push-pull circuit, the dual push-pull circuit is connected to a parallel MOS tube array, the dual push-pull circuit and the parallel MOS tube array are connected to a dual inductor, and the parallel MOS tube array is connected to an output rectification and filtering module.

[0008] As a further improvement of the technical solution, the OUT pin of the FP5139 chip U1 is connected to resistors R2 and R3, the other end of the resistor R2 is connected to the base of transistor Q1 and the base of transistor Q2, the emitter of the transistor Q2 is connected to the emitter of the transistor Q1, the collector of the transistor Q2 is connected to the positive pole of the power supply, the collector of the transistor Q1 is connected to the input and protection module, the other end of the resistor R3 is connected to the base of the transistor Q3 and the base of the transistor Q4, the emitter of the transistor Q4 is connected to the emitter of the transistor Q3, the collector of the transistor Q4 is connected to the positive pole of the power supply, and the collector of the transistor Q3 is connected to the input and protection module, wherein:

[0009] The emitter of the transistor Q2 and the emitter of the transistor Q4 are connected to the gate of the MOS transistor U2, the gate of the MOS transistor U3, the gate of the MOS transistor U4 and the gate of the MOS transistor U5.

[0010] As a further improvement of the present technical solution, the dual inductor includes an inductor L1 and an inductor L2, the inductor L1 and the inductor L2 are connected in parallel, the inductor L1 and the inductor L2 are connected to the positive electrode of the power supply, the other ends of the inductor L1 and the inductor L2 are connected to the drain of the MOS tube U2, the drain of the MOS tube U3, the drain of the MOS tube U4 and the drain of the MOS tube U5, the source of the MOS tube U2, the source of the MOS tube U3, the source of the MOS tube U4 and the source of the MOS tube U5 are connected to the anode of the diode D1 and the anode of the diode D2.

[0011] As a further improvement of the technical solution, the cathode of the diode D1 and the cathode of the diode D2 are connected to the connector J1, the positive electrode of the capacitor C2 and the positive electrode of the capacitor C9, and the negative electrode of the capacitor C2 and the negative electrode of the capacitor C9 are connected to the connector J2 and the negative electrode of the power supply;

[0012] The cathode of the diode D1 and the cathode of the diode D2 are connected to the resistor R4 and the resistor R5, the other end of the resistor R4 is connected to the positive electrode of the capacitor C7, the other end of the resistor R5 and the negative electrode of the capacitor C7 are connected to the resistor R6 and the positive electrode of the power supply, and the other end of the resistor R6 is connected to the negative electrode of the power supply.

[0013] As a further improvement of the technical solution, the input and protection module is connected to the FP5139 chip U1 and works in conjunction with the FP5139 chip U1, wherein:

[0014] The OUT pin of the FP5139 chip U1 is connected to a voltage divider network;

[0015] The SCP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C4, and the negative electrode of the capacitor C4 is connected to the connector J4;

[0016] The VCC pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C3 and the connector J3, and the negative electrode of the capacitor C3 is connected to the capacitor connector J4;

[0017] The CTL pin of the FP5139 chip U1 is connected to the resistor R7, and the other end of the resistor R7 is connected to the connector J4;

[0018] The COMP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C5, and the negative electrode of the capacitor C5 is connected to the connector J4;

[0019] The OSC pin of the FP5139 chip U1 is connected to the resistor R1 and the positive electrode of the capacitor C6, and the negative electrode of the capacitor C6 and the other end of the resistor R1 are connected to the connector J4;

[0020] The GND pin of the FP5139 chip U1 is grounded.

[0021] As a further improvement of the technical solution, the connector J4 is connected to the negative electrode of the capacitor C10 and the negative electrode of the capacitor C1, and the positive electrode of the capacitor C10 and the positive electrode of the capacitor C1 are connected to the connector J3.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. This wide-input, high-power-output BOOST power module uses the classic non-synchronous rectification, MOS external BOOST chip FP5139, combined with two sets of push-pull circuits to drive the MOS switch, which not only improves the switching speed of the MOS tube, but also reduces the on-resistance of the MOS tube, thereby improving the energy conversion efficiency and on-current.

[0024] 2. This wide-input, high-power-output BOOST power module uses four MOS parallel designs, plus two parallel high-power inductors and two high-power diodes, which further enhances the overcurrent capacity of the power supply and ensures stability and reliability in high-power applications. It solves the problem of limited power output of traditional BOOST power supplies under low-voltage input, especially when the input voltage is lower than 3V, the existing technology can usually only achieve a power output of less than 10W, while this device can achieve a maximum power output of 60W under low voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the overall circuit diagram of the input end of the utility model;

[0026] Figure 2 This is the circuit diagram of the input and protection module of the utility model;

[0027] Figure 3 This is the circuit diagram of the control and drive module, power conversion and storage module of the utility model;

[0028] Figure 4 This is the output end circuit diagram of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] See also Figure 1-Figure 4 As shown, this embodiment provides a BOOST power module with wide input and high power output, including an input and protection module, a control and drive module, a power conversion and storage module, and an output rectification and filtering module. The control and drive module includes an FP5139 chip U1 and a dual push-pull circuit, the power conversion and storage module includes a parallel MOS tube array and a dual inductor, and the output rectification and filtering module includes:

[0032] The U1 output pin of the FP5139 chip is connected to a dual push-pull circuit, which is connected to a parallel MOS tube array. The dual push-pull circuit and the parallel MOS tube array are connected to a dual inductor, and the parallel MOS tube array is connected to the output rectification and filtering module. This module uses the FP5139, a classic asynchronous rectification and MOS external BOOST chip, two sets of push-pull circuits to drive the MOS switch, and four MOSs are connected in parallel to improve the overcurrent capacity and reduce the on-resistance, and two high-power inductors and two high-power diodes are connected in parallel to improve the overcurrent capacity.

[0033] The dual push-pull circuit is a parallel push-pull circuit. The OUT pin of the FP5139 chip U1 is connected to the resistor R2 and the resistor R3 with a resistance value of 0Ω. The other end of the resistor R2 is connected to the base of the transistor Q1 and the base of the transistor Q2. The emitter of the transistor Q2 is connected to the emitter of the transistor Q1. The collector of the transistor Q2 is connected to the positive pole of the power supply. The collector of the transistor Q1 is connected to the input and protection module. The other end of the resistor R3 is connected to the base of the transistor Q3 and the base of the transistor Q4. The emitter of the transistor Q4 is connected to the emitter of the transistor Q3. The collector of the transistor Q4 is connected to the positive pole of the power supply. The collector of the transistor Q3 is connected to the input and protection module. Among them:

[0034] The emitters of transistor Q2 and transistor Q4 are connected to the gates of MOS tubes U2, U3, U4 and U5. The OUT pin of FP5139 chip U1 is connected to the dual push-pull circuit through resistors R2 and R3, thereby controlling the gate signal of each MOS tube in the parallel MOS tube array, increasing the switching speed, reducing the on-resistance and improving the energy conversion efficiency.

[0035] The dual inductor includes an inductor L1 and an inductor L2 with an inductance value of 20uH. The inductors L1 and L2 are connected in parallel. The inductors L1 and L2 are connected to the positive pole of the power supply. The other ends of the inductors L1 and L2 are connected to the drain of MOS tube U2, the drain of MOS tube U3, the drain of MOS tube U4 and the drain of MOS tube U5. The source of MOS tube U2, the source of MOS tube U3, the source of MOS tube U4 and the source of MOS tube U5 are connected to the anode of diode D1 and the anode of diode D2. The dual inductor is connected to the MOS tube array to convert and store the input electric energy, improve the overcurrent capacity, and support high power output.

[0036] The cathode of diode D1 and the cathode of diode D2 are connected to connector J1, the positive electrode of capacitor C2 and the positive electrode of capacitor C9, and the negative electrode of capacitor C2 and the negative electrode of capacitor C9 are connected to connector J2 and the negative electrode of power supply. The parameters of capacitor C2 and capacitor C9 are 460uf / 25V;

[0037] The cathode of diode D1 and the cathode of diode D2 are connected to resistor R4 with a resistance value of 20KΩ and resistor R5 with a resistance value of 46KΩ. The other end of resistor R4 is connected to the positive electrode of capacitor C7 with a capacitance value of 0.1uf. The other end of resistor R5 and the negative electrode of capacitor C7 are connected to resistor R6 with a resistance value of 2KΩ and connected to the positive electrode of the power supply. The other end of resistor R6 is connected to the negative electrode of the power supply. The source of the MOS tube array is connected to the anodes of diodes D1 and D2. These two diodes play a rectifying role at the output end to ensure the current flows in the forward direction, and further improve the overcurrent capacity. In conjunction with other electronic components, they play the role of smoothing the converted DC power, reducing ripples, and providing a stable output voltage.

[0038] The input and protection module is connected to the FP5139 chip U1 and works with the FP5139 chip U1, where:

[0039] The OUT pin of the FP5139 chip U1 is connected to a voltage divider network, which is used to detect the output voltage and feed it back to the FP5139 chip to adjust the internal PWM (pulse width modulation) signal to ensure the stability of the output voltage;

[0040] The SCP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C4 with a capacitance value of 0.1uf, and the negative electrode of the capacitor C4 is connected to the connector J4 to provide transient voltage suppression, protect the chip from sudden voltage spikes, and enhance the robustness of the power module;

[0041] The VCC pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C3 with a capacitance value of 0.1uf and the connector J3, and the negative electrode of the capacitor C3 is connected to the capacitor connector J4 to filter out the power supply noise and ensure the stable operation of the chip;

[0042] The CTL pin of the FP5139 chip U1 is connected to a resistor R7 with a resistance value of 40Ω, and the other end of the resistor R7 is connected to the connector J4, which is used to set the working mode of the chip or input an external control signal;

[0043] The COMP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C5 with a capacitance value of 0.1uf, and the negative electrode of the capacitor C5 is connected to the connector J4, which is used to compensate the control loop and improve the dynamic response and stability of the power module;

[0044] The OSC pin of the FP5139 chip U1 is connected to a resistor R1 with a resistance value of 1KΩ and connected to the positive electrode of the capacitor C6. The negative electrode of the capacitor C6 and the other end of the resistor R1 are connected to the connector J4. The 1kΩ resistor R1 and the 0.1μF capacitor C6 form an RC oscillator to determine the switching frequency of the chip, thereby affecting the conversion efficiency and electromagnetic interference characteristics of the power module.

[0045] The GND pin of the FP5139 chip U1 is grounded to provide a reference ground potential for the chip, ensuring the correct reference point for all signals.

[0046] Connector J4 is connected to the negative electrode of capacitor C10 and the negative electrode of capacitor C1, and the positive electrode of capacitor C10 and the positive electrode of capacitor C1 are connected to connector J3, which provides decoupling and filtering for the internal circuit of the power module to ensure the stable operation of the power module.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A BOOST power module with wide input and high power output, characterized in that: It includes an input and protection module, a control and drive module, a power conversion and storage module, and an output rectification and filtering module. The control and drive module includes an FP5139 chip U1 and a dual push-pull circuit. The power conversion and storage module includes a parallel MOS tube array and a dual inductor. The output rectification and filtering module includes: The FP5139 chip U1 output pin is connected to a dual push-pull circuit, the dual push-pull circuit is connected to a parallel MOS tube array, the dual push-pull circuit and the parallel MOS tube array are connected to a dual inductor, and the parallel MOS tube array is connected to an output rectification and filtering module.

2. The BOOST power module with wide input and high power output according to claim 1, characterized in that: The OUT pin of the FP5139 chip U1 is connected to resistors R2 and R3, the other end of the resistor R2 is connected to the base of transistor Q1 and the base of transistor Q2, the emitter of the transistor Q2 is connected to the emitter of the transistor Q1, the collector of the transistor Q2 is connected to the positive pole of the power supply, the collector of the transistor Q1 is connected to the input and protection module, the other end of the resistor R3 is connected to the base of the transistor Q3 and the base of the transistor Q4, the emitter of the transistor Q4 is connected to the emitter of the transistor Q3, the collector of the transistor Q4 is connected to the positive pole of the power supply, and the collector of the transistor Q3 is connected to the input and protection module, wherein: The emitter of the transistor Q2 and the emitter of the transistor Q4 are connected to the gate of the MOS transistor U2, the gate of the MOS transistor U3, the gate of the MOS transistor U4 and the gate of the MOS transistor U5.

3. The BOOST power module with wide input and high power output according to claim 1, characterized in that: The dual inductor includes an inductor L1 and an inductor L2, which are connected in parallel, and the inductor L1 and the inductor L2 are connected to the positive electrode of the power supply, and the other ends of the inductor L1 and the inductor L2 are connected to the drain of the MOS tube U2, the drain of the MOS tube U3, the drain of the MOS tube U4 and the drain of the MOS tube U5, and the source of the MOS tube U2, the source of the MOS tube U3, the source of the MOS tube U4 and the source of the MOS tube U5 are connected to the anode of the diode D1 and the anode of the diode D2.

4. The BOOST power module with wide input and high power output according to claim 3, characterized in that: The cathode of the diode D1 and the cathode of the diode D2 are connected to the connector J1, the positive electrode of the capacitor C2 and the positive electrode of the capacitor C9, and the negative electrode of the capacitor C2 and the negative electrode of the capacitor C9 are connected to the connector J2 and the negative electrode of the power supply; The cathode of the diode D1 and the cathode of the diode D2 are connected to the resistor R4 and the resistor R5, the other end of the resistor R4 is connected to the positive electrode of the capacitor C7, the other end of the resistor R5 and the negative electrode of the capacitor C7 are connected to the resistor R6 and the positive electrode of the power supply, and the other end of the resistor R6 is connected to the negative electrode of the power supply.

5. The BOOST power module with wide input and high power output according to claim 1, characterized in that: The input and protection module is connected to the FP5139 chip U1 and works in conjunction with the FP5139 chip U1, wherein: The OUT pin of the FP5139 chip U1 is connected to a voltage divider network; The SCP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C4, and the negative electrode of the capacitor C4 is connected to the connector J4; The VCC pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C3 and the connector J3, and the negative electrode of the capacitor C3 is connected to the capacitor connector J4; The CTL pin of the FP5139 chip U1 is connected to the resistor R7, and the other end of the resistor R7 is connected to the connector J4; The COMP pin of the FP5139 chip U1 is connected to the positive electrode of the capacitor C5, and the negative electrode of the capacitor C5 is connected to the connector J4; The OSC pin of the FP5139 chip U1 is connected to the resistor R1 and the positive electrode of the capacitor C6, and the negative electrode of the capacitor C6 and the other end of the resistor R1 are connected to the connector J4; The GND pin of the FP5139 chip U1 is grounded.

6. A BOOST power module with wide input and high power output according to claim 5, characterized in that: The connector J4 is connected to the negative electrode of the capacitor C10 and the negative electrode of the capacitor C1, and the positive electrode of the capacitor C10 and the positive electrode of the capacitor C1 are connected to the connector J3.

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