Power supply circuit for TTE analyzer

Abstract

The utility model discloses a power supply circuit used for a TTE analyzer, comprising a power supply management module and a power supply protection module, a power supply voltage input end of the power supply protection module is connected with a power supply VCC5VIN, and a power supply voltage output end of the power supply protection module is connected with a power supply voltage input end of the power supply management module. The power supply protection module can play a role in overvoltage, overcurrent and reverse current protection, and the power supply management module and the power supply protection module can output different power supply voltages.

Description

Technical Field

[0001] The utility model relates to the technical field of power management, and in particular to a power supply circuit for a TTE (Time Triggered Ethernet) analyzer, which can provide multiple independent voltage outputs to power various subsystems in the TTE analyzer to ensure stable and efficient operation thereof. Background Art

[0002] With the widespread application of Time-Triggered Ethernet (TTE) technology in high-reliability, high-real-time application fields such as aviation, aerospace, and industrial automation, real-time monitoring and analysis of TTE networks are particularly important. As a key device, TTE analyzer is used to capture and analyze data packets in TTE networks to ensure the real-time and reliability of the network. To achieve these functions, TTE analyzers need to have efficient data processing capabilities and multiple interfaces, which puts higher requirements on power management.

[0003] Traditional power supply circuits can often only provide a single or limited voltage output, which is difficult to meet the diverse needs of complex systems. Common power management solutions in the prior art have the following shortcomings:

[0004] Lack of comprehensive protection: Existing power modules are insufficient in terms of overvoltage, overcurrent, and protection functions, and are prone to damage equipment under abnormal conditions.

[0005] In view of the above problems, the utility model provides a power supply circuit, which is particularly suitable for TTE analyzers. The circuit integrates a multi-channel DC / DC power management module and comprehensive power protection functions, can provide multiple independent stable voltage outputs, and has overcurrent, overvoltage and reverse current protection functions to ensure the stable and efficient operation of each subsystem in the TTE analyzer. Utility Model Content

[0006] The utility model aims to at least solve the technical problems existing in the prior art, and particularly innovatively proposes a power supply circuit for a TTE analyzer, which integrates a power management module and a power protection module, can provide multiple independent stable voltage outputs, and has overcurrent, overvoltage and reverse current protection functions to ensure stable and efficient operation of various subsystems in the TTE analyzer.

[0007] The utility model provides a power supply circuit for a TTE analyzer, comprising a power supply management module and a power supply protection module, wherein:

[0008] The power supply voltage input terminal of the power supply protection module is connected to the power supply VCC_5V_IN, and the power supply voltage output terminal of the power supply protection module is connected to the power supply voltage input terminal of the power supply management module.

[0009] The power protection module can provide overvoltage, overcurrent and reverse current protection. The power management module and the power protection module can output different power supply voltages, such as 5V, 1.8V, 1.5V, 1V, etc.

[0010] In a preferred embodiment of the utility model, the power protection module includes: the first end of the fuse FU1 is connected to the power supply VCC_5V_IN, the second end of the fuse FU1 is connected to the anode of the diode V2, the cathode of the diode V2 is connected to the cathode of the diode VD1, the first end of the capacitor C2, and the first end of the capacitor C3, the anode of the diode VD1 is grounded, the second end of the capacitor C2 and the second end of the capacitor C3 are both grounded, and the cathode of the diode V2 outputs the power supply voltage VCC5V. The fuse FU1 can play an overcurrent protection role, the diode V2 plays a reverse protection role, and the diode VD1 plays an overvoltage protection role, so as to realize the conversion of the input power supply VCC_5V_IN into a stable power supply voltage VCC5V output.

[0011] In a preferred embodiment of the present invention, the power management module includes:

[0012] The voltage output pin VOUT3_0 of the buck regulator chip D12, the voltage output pin VOUT3_1 of the buck regulator chip D12, the voltage output pin VOUT3_2 of the buck regulator chip D12, the voltage output pin VOUT4_0 of the buck regulator chip D12, the voltage output pin VOUT4_1 of the buck regulator chip D12 and the voltage output pin VOUT4_2 of the buck regulator chip D12 output the power supply voltage VCC1V_VINT and are connected to the first end of the capacitor C281 and the first end of the capacitor C284, the second end of the capacitor C281 and the second end of the capacitor C284 are grounded, the feedback pin FB3 of the buck regulator chip D12 and the feedback pin FB4 of the buck regulator chip D12 are connected to the first end of the resistor R143 and the resistor R146 The first end of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the second end of the resistor R143 and the second end of the resistor R146 are grounded, the voltage tracking and soft-start pin TRACK|SS3 of the step-down voltage regulator chip D12 and the voltage tracking and soft-start pin TRACK|SS4 of the step-down voltage regulator chip D12 are connected to the first end of the capacitor C278, the second end of the capacitor C278 is grounded, the power good indication terminal PGOOD3 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the power good indication terminal PGOOD4 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R142, and the second end of the resistor R142 is connected to the internal power pin INTVCC4 of the step-down voltage regulator chip D12;

[0013] The voltage input pin VIN3_0 of the buck regulator chip D12, the voltage input pin VIN3_1 of the buck regulator chip D12, the voltage input pin SVIN3 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, the voltage input pin VIN4_0 of the buck regulator chip D12, the voltage input pin VIN4_1 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, and ...1 of the buck regulator chip D12 The voltage input pin SVIN4 of the buck regulator chip D12 and the enable pin RUN4 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C275, the second end of the capacitor C275 is grounded, the internal power pin INTVCC3 of the buck regulator chip D12 is connected to the working mode configuration pin MODE3 of the buck regulator chip D12, and the internal power pin INTVCC4 of the buck regulator chip D12 is connected to the working mode configuration pin MODE4 of the buck regulator chip D12;

[0014] The ground pin SGND of the buck regulator chip D12, the ground pin GND_0 of the buck regulator chip D12, the ground pin GND_1 of the buck regulator chip D12, the ground pin GND_2 of the buck regulator chip D12, the ground pin GND_3 of the buck regulator chip D12, the ground pin GND_4 of the buck regulator chip D12, the ground pin GND_5 of the buck regulator chip D12, the ground pin GND_6 of the buck regulator chip D12, the ground pin GND_7 of the buck regulator chip D12, the ground pin GND_8 of the buck regulator chip D12, the ground pin GND_9 of the buck regulator chip D The ground pin GND_10 of the buck regulator chip D12, the ground pin GND_11 of the buck regulator chip D12, the ground pin GND_12 of the buck regulator chip D12, the ground pin GND_13 of the buck regulator chip D12, the ground pin GND_14 of the buck regulator chip D12, the ground pin GND_15 of the buck regulator chip D12, the ground pin GND_16 of the buck regulator chip D12, the ground pin GND_17 of the buck regulator chip D12, the ground pin GND_18 of the buck regulator chip D12, the ground pin GND_19 of the buck regulator chip D12, and the ground pin GND_20 of the buck regulator chip D12 are all grounded. The input power supply voltage VCC5V is converted into a stable power supply voltage VCC1V_ for output through the buck regulator chip D12.

[0015] The voltage output pin VOUT1_0 of the buck regulator chip D12, the voltage output pin VOUT1_1 of the buck regulator chip D12 and the voltage output pin VOUT1_2 of the buck regulator chip D12 output the power supply voltage VCC1.8V and are connected to the first end of the capacitor C279 and the first end of the capacitor C282, the second end of the capacitor C279 and the second end of the capacitor C282 are grounded, the feedback pin FB1 of the buck regulator chip D12 is connected to the first end of the resistor R144, the second end of the resistor R144 is grounded, the voltage tracking and soft start pin TRACK|SS1 of the buck regulator chip D12 is connected to the first end of the capacitor C276, the second end of the capacitor C276 is grounded, the power good indication pin PGOOD1 of the buck regulator chip D12 is connected to the first end of the resistor R139, and the second end of the resistor R139 is connected to the internal power pin INTVCC1 of the buck regulator chip D12;

[0016] The voltage output pin VOUT2_0 of the buck regulator chip D12, the voltage output pin VOUT2_1 of the buck regulator chip D12 and the voltage output pin VOUT2_2 of the buck regulator chip D12 output the power supply voltage VCC1.5V and are connected to the first end of the capacitor C280 and the first end of the capacitor C283, the second end of the capacitor C280 and the second end of the capacitor C283 are grounded, the feedback pin FB2 of the buck regulator chip D12 is connected to the first end of the resistor R145, the second end of the resistor R145 is grounded, the voltage tracking and soft start pin TRACK|SS2 of the buck regulator chip D12 is connected to the first end of the capacitor C277, the second end of the capacitor C277 is grounded, the power good indication terminal PGOOD2 of the buck regulator chip D12 is connected to the first end of the resistor R140, and the second end of the resistor R140 is connected to the internal power pin INTVCC2 of the buck regulator chip D12;

[0017] The power good indication terminal PGOOD1 of the buck voltage regulator chip D12 is connected to the enable terminal RUN2 of the buck voltage regulator chip D12;

[0018] The voltage input pin VIN1_0 of the buck voltage regulator chip D12, the voltage input pin VIN1_1 of the buck voltage regulator chip D12, and the voltage input pin SVIN1 of the buck voltage regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C272, the second end of the capacitor C272 is grounded, and the power good indication terminal PGOOD3 of the buck voltage regulator chip D12 and the power good indication terminal PGOOD4 of the buck voltage regulator chip D12 are connected to the enable terminal RUN1 of the buck voltage regulator chip D12;

[0019] The voltage input pin VIN2_0 of the buck regulator chip D12, the voltage input pin VIN2_1 of the buck regulator chip D12, and the voltage input pin SVIN2 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C273, and the second end of the capacitor C273 is grounded;

[0020] The internal power pin INTVCC1 of the buck regulator chip D12 is connected to the working mode configuration pin MODE1 of the buck regulator chip D12, and the internal power pin INTVCC2 of the buck regulator chip D12 is connected to the working mode configuration pin MODE2 of the buck regulator chip D12. The input power supply voltage VCC5V is converted into a stable power supply voltage VCC1.8V and VCC1.5V for output through the buck regulator chip D12.

[0021] In a preferred implementation manner of the present utility model, the model of the diode V2 is FSV15100V.

[0022] In a preferred embodiment of the present invention, the model of the diode VD1 is SMCJ5.0A.

[0023] In a preferred implementation manner of the present utility model, the model of the buck regulator chip D12 is LTM4644EY#PBF.

[0024] In summary, due to the adoption of the above technical solution, the utility model can convert the input voltage into the required voltage in a stable manner in a safe and protected manner.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a schematic block diagram of system connection of the utility model.

[0028] Figure 2 It is a circuit connection diagram of the power protection module.

[0029] Figure 3 It is a circuit connection diagram of the power management module. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The utility model provides a power supply circuit for a TTE analyzer, such as Figure 1 As shown, it includes a power management module and a power protection module, wherein:

[0032] The power supply voltage input terminal of the power supply protection module is connected to the power supply VCC_5V_IN, and the power supply voltage output terminal of the power supply protection module is connected to the power supply voltage input terminal of the power supply management module.

[0033] In a preferred embodiment of the present invention, Figure 2 As shown, the power protection module includes: a first end of the fuse FU1 is connected to the power supply VCC_5V_IN, a second end of the fuse FU1 is connected to the anode of the diode V2, a cathode of the diode V2 is connected to the cathode of the diode VD1, a first end of the capacitor C2, and a first end of the capacitor C3, the anode of the diode VD1 is grounded, the second end of the capacitor C2 and the second end of the capacitor C3 are both grounded, and the cathode of the diode V2 outputs the power supply voltage VCC5V, as shown in FIG. Figure 2 Preferably, the model of the diode V2 is FSV15100V, the model of the diode VD1 is SMCJ5.0A, the model of the step-down voltage regulator chip D12 is LTM4644EY#PBF, and the capacitance of the capacitor C2 and the capacitor C3 is 100uF.

[0034] In a preferred embodiment of the present invention, Figure 3 As shown, the power management module includes:

[0035] The voltage output pin VOUT3_0 of the buck regulator chip D12, the voltage output pin VOUT3_1 of the buck regulator chip D12, the voltage output pin VOUT3_2 of the buck regulator chip D12, the voltage output pin VOUT4_0 of the buck regulator chip D12, the voltage output pin VOUT4_1 of the buck regulator chip D12 and the voltage output pin VOUT4_2 of the buck regulator chip D12 output the power supply voltage VCC1V_VINT and are connected to the first end of the capacitor C281 and the first end of the capacitor C284, the second end of the capacitor C281 and the second end of the capacitor C284 are grounded, the feedback pin FB3 of the buck regulator chip D12 and the feedback pin FB4 of the buck regulator chip D12 are connected to the first end of the resistor R143 and the resistor R146 The first end of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the second end of the resistor R143 and the second end of the resistor R146 are grounded, the voltage tracking and soft-start pin TRACK|SS3 of the step-down voltage regulator chip D12 and the voltage tracking and soft-start pin TRACK|SS4 of the step-down voltage regulator chip D12 are connected to the first end of the capacitor C278, the second end of the capacitor C278 is grounded, the power good indication terminal PGOOD3 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the power good indication terminal PGOOD4 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R142, and the second end of the resistor R142 is connected to the internal power pin INTVCC4 of the step-down voltage regulator chip D12;

[0036] The voltage input pin VIN3_0 of the buck regulator chip D12, the voltage input pin VIN3_1 of the buck regulator chip D12, the voltage input pin SVIN3 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, the voltage input pin VIN4_0 of the buck regulator chip D12, the voltage input pin VIN4_1 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, and ...1 of the buck regulator chip D12 The voltage input pin SVIN4 of the buck regulator chip D12 and the enable pin RUN4 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C275, the second end of the capacitor C275 is grounded, the internal power pin INTVCC3 of the buck regulator chip D12 is connected to the working mode configuration pin MODE3 of the buck regulator chip D12, and the internal power pin INTVCC4 of the buck regulator chip D12 is connected to the working mode configuration pin MODE4 of the buck regulator chip D12;

[0037] The ground pin SGND of the buck regulator chip D12, the ground pin GND_0 of the buck regulator chip D12, the ground pin GND_1 of the buck regulator chip D12, the ground pin GND_2 of the buck regulator chip D12, the ground pin GND_3 of the buck regulator chip D12, the ground pin GND_4 of the buck regulator chip D12, the ground pin GND_5 of the buck regulator chip D12, the ground pin GND_6 of the buck regulator chip D12, the ground pin GND_7 of the buck regulator chip D12, the ground pin GND_8 of the buck regulator chip D12, the ground pin GND_9 of the buck regulator chip D The ground pin GND_10 of the buck regulator chip D12, the ground pin GND_11 of the buck regulator chip D12, the ground pin GND_12 of the buck regulator chip D12, the ground pin GND_13 of the buck regulator chip D12, the ground pin GND_14 of the buck regulator chip D12, the ground pin GND_15 of the buck regulator chip D12, the ground pin GND_16 of the buck regulator chip D12, the ground pin GND_17 of the buck regulator chip D12, the ground pin GND_18 of the buck regulator chip D12, the ground pin GND_19 of the buck regulator chip D12, and the ground pin GND_20 of the buck regulator chip D12 are all grounded. The input power supply voltage VCC5V is converted into a stable power supply voltage VCC1V_ for output through the buck regulator chip D12.

[0038] The voltage output pin VOUT1_0 of the buck regulator chip D12, the voltage output pin VOUT1_1 of the buck regulator chip D12 and the voltage output pin VOUT1_2 of the buck regulator chip D12 output the power supply voltage VCC1.8V and are connected to the first end of the capacitor C279 and the first end of the capacitor C282, the second end of the capacitor C279 and the second end of the capacitor C282 are grounded, the feedback pin FB1 of the buck regulator chip D12 is connected to the first end of the resistor R144, the second end of the resistor R144 is grounded, the voltage tracking and soft start pin TRACK|SS1 of the buck regulator chip D12 is connected to the first end of the capacitor C276, the second end of the capacitor C276 is grounded, the power good indication pin PGOOD1 of the buck regulator chip D12 is connected to the first end of the resistor R139, and the second end of the resistor R139 is connected to the internal power pin INTVCC1 of the buck regulator chip D12;

[0039] The voltage output pin VOUT2_0 of the buck regulator chip D12, the voltage output pin VOUT2_1 of the buck regulator chip D12 and the voltage output pin VOUT2_2 of the buck regulator chip D12 output the power supply voltage VCC1.5V and are connected to the first end of the capacitor C280 and the first end of the capacitor C283, the second end of the capacitor C280 and the second end of the capacitor C283 are grounded, the feedback pin FB2 of the buck regulator chip D12 is connected to the first end of the resistor R145, the second end of the resistor R145 is grounded, the voltage tracking and soft start pin TRACK|SS2 of the buck regulator chip D12 is connected to the first end of the capacitor C277, the second end of the capacitor C277 is grounded, the power good indication terminal PGOOD2 of the buck regulator chip D12 is connected to the first end of the resistor R140, and the second end of the resistor R140 is connected to the internal power pin INTVCC2 of the buck regulator chip D12;

[0040] The power good indication terminal PGOOD1 of the buck voltage regulator chip D12 is connected to the enable terminal RUN2 of the buck voltage regulator chip D12;

[0041] The voltage input pin VIN1_0 of the buck voltage regulator chip D12, the voltage input pin VIN1_1 of the buck voltage regulator chip D12, and the voltage input pin SVIN1 of the buck voltage regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C272, the second end of the capacitor C272 is grounded, and the power good indication terminal PGOOD3 of the buck voltage regulator chip D12 and the power good indication terminal PGOOD4 of the buck voltage regulator chip D12 are connected to the enable terminal RUN1 of the buck voltage regulator chip D12;

[0042] The voltage input pin VIN2_0 of the buck regulator chip D12, the voltage input pin VIN2_1 of the buck regulator chip D12, and the voltage input pin SVIN2 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C273, and the second end of the capacitor C273 is grounded;

[0043] The internal power pin INTVCC1 of the buck regulator chip D12 is connected to the working mode configuration pin MODE1 of the buck regulator chip D12, and the internal power pin INTVCC2 of the buck regulator chip D12 is connected to the working mode configuration pin MODE2 of the buck regulator chip D12. The input power supply voltage VCC5V is converted into a stable power supply voltage VCC1.8V and VCC1.5V for output through the buck regulator chip D12.

[0044] In a preferred embodiment of the present utility model, the capacitance of capacitor C272, capacitor C273, capacitor C274 and capacitor C275 is 22uF, the capacitance of capacitor C276, capacitor C277 and capacitor C278 is 0.1uF, capacitor C279, capacitor C280, capacitor C281, capacitor C282, capacitor C283 and capacitor C284 are all 0.1uF.

[0045] In a preferred embodiment of the present invention, the resistance values ​​of resistors R139, R140, R141 and R142 are 10 kΩ, the resistance values ​​of resistors R143 and R146 are 90.9 kΩ, the resistance value of resistor R145 is 40.2 kΩ, and the resistance value of resistor R144 is 30.1 kΩ.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A power supply circuit for a TTE analyzer, characterized in that: It includes a power management module and a power protection module, wherein: The power supply voltage input terminal of the power supply protection module is connected to the power supply VCC_5V_IN, and the power supply voltage output terminal of the power supply protection module is connected to the power supply voltage input terminal of the power supply management module. The power protection module includes: a first end of the fuse FU1 is connected to the power supply VCC_5V_IN, a second end of the fuse FU1 is connected to the anode of the diode V2, a cathode of the diode V2 is connected to the cathode of the diode VD1, a first end of the capacitor C2, and a first end of the capacitor C3, the anode of the diode VD1 is grounded, the second end of the capacitor C2 and the second end of the capacitor C3 are both grounded, and the cathode of the diode V2 outputs the power supply voltage VCC5V.

2. The power supply circuit for a TTE analyzer according to claim 1, characterized in that: The power management module comprises: The voltage output pin VOUT3_0 of the buck regulator chip D12, the voltage output pin VOUT3_1 of the buck regulator chip D12, the voltage output pin VOUT3_2 of the buck regulator chip D12, the voltage output pin VOUT4_0 of the buck regulator chip D12, the voltage output pin VOUT4_1 of the buck regulator chip D12 and the voltage output pin VOUT4_2 of the buck regulator chip D12 output the power supply voltage VCC1V_VINT and are connected to the first end of the capacitor C281 and the first end of the capacitor C284, the second end of the capacitor C281 and the second end of the capacitor C284 are grounded, the feedback pin FB3 of the buck regulator chip D12 and the feedback pin FB4 of the buck regulator chip D12 are connected to the first end of the resistor R143 and the resistor R146 The first end of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the second end of the resistor R143 and the second end of the resistor R146 are grounded, the voltage tracking and soft-start pin TRACK|SS3 of the step-down voltage regulator chip D12 and the voltage tracking and soft-start pin TRACK|SS4 of the step-down voltage regulator chip D12 are connected to the first end of the capacitor C278, the second end of the capacitor C278 is grounded, the power good indication terminal PGOOD3 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R141, the second end of the resistor R141 is connected to the internal power pin INTVCC3 of the step-down voltage regulator chip D12, the power good indication terminal PGOOD4 of the step-down voltage regulator chip D12 is connected to the first end of the resistor R142, and the second end of the resistor R142 is connected to the internal power pin INTVCC4 of the step-down voltage regulator chip D12; The voltage input pin VIN3_0 of the buck regulator chip D12, the voltage input pin VIN3_1 of the buck regulator chip D12, the voltage input pin SVIN3 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, the voltage input pin VIN4_0 of the buck regulator chip D12, the voltage input pin VIN4_1 of the buck regulator chip D12, and the enable pin RUN3 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C274, the second end of the capacitor C274 is grounded, and ...1 of the buck regulator chip D12 The voltage input pin SVIN4 of the buck regulator chip D12 and the enable pin RUN4 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C275, the second end of the capacitor C275 is grounded, the internal power pin INTVCC3 of the buck regulator chip D12 is connected to the working mode configuration pin MODE3 of the buck regulator chip D12, and the internal power pin INTVCC4 of the buck regulator chip D12 is connected to the working mode configuration pin MODE4 of the buck regulator chip D12; The ground pin SGND of the buck regulator chip D12, the ground pin GND_0 of the buck regulator chip D12, the ground pin GND_1 of the buck regulator chip D12, the ground pin GND_2 of the buck regulator chip D12, the ground pin GND_3 of the buck regulator chip D12, the ground pin GND_4 of the buck regulator chip D12, the ground pin GND_5 of the buck regulator chip D12, the ground pin GND_6 of the buck regulator chip D12, the ground pin GND_7 of the buck regulator chip D12, the ground pin GND_8 of the buck regulator chip D12, the ground pin GND_9 of the buck regulator chip D The ground pin GND_10 of buck voltage regulator chip D12, the ground pin GND_11 of buck voltage regulator chip D12, the ground pin GND_12 of buck voltage regulator chip D12, the ground pin GND_13 of buck voltage regulator chip D12, the ground pin GND_14 of buck voltage regulator chip D12, the ground pin GND_15 of buck voltage regulator chip D12, the ground pin GND_16 of buck voltage regulator chip D12, the ground pin GND_17 of buck voltage regulator chip D12, the ground pin GND_18 of buck voltage regulator chip D12, the ground pin GND_19 of buck voltage regulator chip D12, and the ground pin GND_20 of buck voltage regulator chip D12 are all grounded.

3. The power supply circuit for a TTE analyzer according to claim 2, characterized in that: The power management module also includes: The voltage output pin VOUT1_0 of the buck regulator chip D12, the voltage output pin VOUT1_1 of the buck regulator chip D12 and the voltage output pin VOUT1_2 of the buck regulator chip D12 output the power supply voltage VCC1.8V and are connected to the first end of the capacitor C279 and the first end of the capacitor C282, the second end of the capacitor C279 and the second end of the capacitor C282 are grounded, the feedback pin FB1 of the buck regulator chip D12 is connected to the first end of the resistor R144, the second end of the resistor R144 is grounded, the voltage tracking and soft start pin TRACK|SS1 of the buck regulator chip D12 is connected to the first end of the capacitor C276, the second end of the capacitor C276 is grounded, the power good indication pin PGOOD1 of the buck regulator chip D12 is connected to the first end of the resistor R139, and the second end of the resistor R139 is connected to the internal power pin INTVCC1 of the buck regulator chip D12; The voltage output pin VOUT2_0 of the buck regulator chip D12, the voltage output pin VOUT2_1 of the buck regulator chip D12 and the voltage output pin VOUT2_2 of the buck regulator chip D12 output the power supply voltage VCC1.5V and are connected to the first end of the capacitor C280 and the first end of the capacitor C283, the second end of the capacitor C280 and the second end of the capacitor C283 are grounded, the feedback pin FB2 of the buck regulator chip D12 is connected to the first end of the resistor R145, the second end of the resistor R145 is grounded, the voltage tracking and soft start pin TRACK|SS2 of the buck regulator chip D12 is connected to the first end of the capacitor C277, the second end of the capacitor C277 is grounded, the power good indication terminal PGOOD2 of the buck regulator chip D12 is connected to the first end of the resistor R140, and the second end of the resistor R140 is connected to the internal power pin INTVCC2 of the buck regulator chip D12; The power good indication terminal PGOOD1 of the buck voltage regulator chip D12 is connected to the enable terminal RUN2 of the buck voltage regulator chip D12; The voltage input pin VIN1_0 of the buck voltage regulator chip D12, the voltage input pin VIN1_1 of the buck voltage regulator chip D12, and the voltage input pin SVIN1 of the buck voltage regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C272, the second end of the capacitor C272 is grounded, and the power good indication terminal PGOOD3 of the buck voltage regulator chip D12 and the power good indication terminal PGOOD4 of the buck voltage regulator chip D12 are connected to the enable terminal RUN1 of the buck voltage regulator chip D12; The voltage input pin VIN2_0 of the buck regulator chip D12, the voltage input pin VIN2_1 of the buck regulator chip D12, and the voltage input pin SVIN2 of the buck regulator chip D12 are connected to the power supply voltage VCC5V and the first end of the capacitor C273, and the second end of the capacitor C273 is grounded; An internal power pin INTVCC1 of the buck regulator chip D12 is connected to an operation mode configuration pin MODE1 of the buck regulator chip D12, and an internal power pin INTVCC2 of the buck regulator chip D12 is connected to an operation mode configuration pin MODE2 of the buck regulator chip D12.

4. The power supply circuit for a TTE analyzer according to claim 1, characterized in that: The model of diode V2 is FSV15100V.

5. The power supply circuit for a TTE analyzer according to claim 1, characterized in that: The model of diode VD1 is SMCJ5.0A.

6. The power supply circuit for a TTE analyzer according to claim 2, characterized in that: The model of the buck regulator chip D12 is LTM4644EY#PBF.

Images