DC-DC boost circuit for spectrum detection
The DC-DC boost circuit used for spectral detection, including charging and discharge circuit, total power switch circuit, boost module and light source switch control circuit, solving the problem of low voltage circuit integration in existing technologies, realized the realization Multi -functional high -integrated circuit design improves the reliability of the system.
Patent Information
- Application Number
- CN202421076560.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The handheld detectors with existing spectral technology have low voltage boost circuit integration, single function and unreliable.
A DC-DC boost circuit for spectral detection is designed, including charging and discharge circuits, total power switch circuits, boost modules, and light source switch control circuits. Through these circuits, lithium battery filling management, controller and spectrometer and spectrometer and spectrometer and spectrometer and spectrometer and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrum and spectrometer are realized Light source power supply and switch control multi -functional high integration.
The power supply management, controller and spectrometer and light source power supply are realized, and multiple modules have been avoided by multiple modules caused by a single function structure and low integration, and the reliability and integration of the system is enhanced.
Smart Images
Figure CN222423289U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of spectrum detection circuits and relates to a DC-DC boost circuit for spectrum detection. Background Art
[0002] Handheld detectors based on spectral technology can achieve accurate and real-time prediction of the internal quality indicators of fruits. At present, spectral technology is widely used in different usage scenarios such as fruit harvesting, storage, production and processing, and sales, providing a fast, accurate, and low-cost detection solution for fruit grading. Since the output voltage of the lithium battery used in the handheld detector is only 3.7V, but the voltage required for the normal operation of the instrument is 5V, a DC-DC boost circuit is required. However, the boost circuit structure of the existing handheld detector using spectral technology is single-function, low-integration, and unreliable. Utility Model Content
[0003] The utility model aims to provide a DC-DC boost circuit for spectrum detection, which solves the problem of low integration of boost circuits in handheld detectors of spectrum technology in the prior art.
[0004] The technical solution adopted by the utility model is a DC-DC boost circuit for spectrum detection, comprising a charge and discharge circuit, wherein the output end of the charge and discharge circuit is connected to the input end of a main power switch circuit, the output end of the main power switch circuit is connected to the input end of a boost module, and the output end of the boost module is connected to the input end of a light source switch control circuit.
[0005] The utility model is also characterized in that:
[0006] The charge and discharge circuit includes a fuse F1, the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and CE pin of chip U6, the GND pin, EP pin and TEMP pin of chip U6 are grounded, the PROG pin of chip U6 is connected to the input end of resistor R14, the output end of resistor R14 is grounded, the CHRG pin of chip U6 is connected to the input end of LED1, the output end of LED1 is connected to the input end of resistor R13, the output end of resistor R13 is connected to the VCC pin of chip U6, the STDBY pin of chip U6 is connected to the input end of LED2, the output end of LED2 is connected to the input end of resistor R13, the BAT pin of chip U6 is The pins are respectively connected to the input end of capacitor C18 and the input end of capacitor C17, the output end of capacitor C18 is grounded, the first output end of capacitor C17 is connected to the S2 pin of field effect transistor Q3, the second output end of capacitor C17 is grounded, the G2 pin of field effect transistor Q3 is connected to the COUT pin of chip U4, the G1 pin of field effect transistor Q3 is connected to the DOUT pin of chip U4, the D1 pin and D2 pin of field effect transistor Q3 are suspended, the S1 pin of field effect transistor Q3 is respectively connected to the VSS pin of chip U4 and the input end of capacitor C16, the output end of capacitor C16 is respectively connected to the input end of resistor R11 and the VDD pin of chip U4, the output end of resistor R11 is connected to the input end BAT+ of battery J4, the VSS pin of chip U4 is connected to the output end BAT- of battery J4, the input end BAT+ of battery J4 is connected to the main power switch circuit, and the NC pin of chip U4 is suspended.
[0007] The main power switch circuit includes a chip U2, a VDD pin of the chip U2 is connected to the input end of the capacitor C15, the output end of the capacitor C15 is grounded, the VDD pin of the chip U2 is connected to the input end BAT+ of the battery J4, the OUT pin of the chip U2 is respectively connected to the input end of the resistor R10 and the input end of the resistor R9, the output end of the resistor R10 is connected to the gate of the PMOS tube Q1, the drain of the PMOS tube Q1 is connected to the output end of the resistor R9, the source of the PMOS tube Q1 is connected to the boost module, the NC pin of the chip U2 is suspended, the GND pin of the chip U2 is grounded, and the OF / OFF pin of the chip U2 is connected to the POWER end of the connector J1.
[0008] The boost module includes an input voltage VIN, which is connected to the source of the PMOS tube Q1. The input voltage VIN is respectively connected to the input end of the capacitor C10, the input end of the capacitor C11, the input end of the capacitor C12, the VIN pin of the chip U1 and the input end of the inductor L1. The output end of the capacitor C10, the output end of the capacitor C11 and the output end of the capacitor C12 are all grounded. The output end of the inductor L1 is respectively connected to the SW pin of the chip U1, the input end of the resistor R6 and the input end of the capacitor C4. The output end of the resistor R6 is connected to the FSW pin of the chip U1, the output end of the capacitor C4 is connected to the BOOT pin of the chip U1, the SS pin of the chip U1 is connected to the input end of the capacitor C13, the output end of the capacitor C13 is grounded, the VCC pin of the chip U1 is connected to the input end of the capacitor C2, the output end of the capacitor C2 is grounded, the EN pin of the chip U1 is connected to the input end of the resistor R3, the output end of the resistor R3 is connected to the input end of the capacitor C2, and the COMP pin of the chip U1 is The input end of the resistor R4 and the input end of the capacitor C3 are respectively connected, the output end of the capacitor C3 is grounded, the output end of the resistor R4 is connected to the input end of the capacitor C1, the output end of the capacitor C1 is grounded, the ILIM pin of the chip U1 is connected to the input end of the resistor R2, the output end of the resistor R2 is grounded, the PGND pin and the AGND pin of the chip U1 are grounded, the NC pin and the MODE pin of the chip U1 are suspended, the VOUT pin of the chip U1 is respectively connected to the positive electrode of the electrolytic capacitor C5, the input end of the capacitor C6, the input end of the capacitor C7, the input end of the capacitor C8, the input end of the capacitor C9, the VOUT pin of the connector J3 and the light source switch control circuit, the negative electrode of the electrolytic capacitor C5, the output end of the capacitor C6, the output end of the capacitor C7, the output end of the capacitor C8 and the output end of the capacitor C9 are all grounded, the FB pin of the chip U1 is respectively connected to the input end of the resistor R5 and the input end of the resistor R1, the output end of the resistor R1 is grounded, and the output end of the resistor R5 is connected to the positive electrode of the electrolytic capacitor C5.
[0009] The VOUT pin of connector J3 is connected to the control circuit.
[0010] The light source switch control circuit includes a chip U3, a VDD pin of the chip U3 is respectively connected to the input end of the capacitor C14 and the VOUT pin of the chip U1, the output end of the capacitor C14 is grounded, the OUT pin of the chip U3 is respectively connected to the input end of the resistor R7 and the input end of the resistor R8, the output end of the resistor R7 is connected to the gate of the PMOS tube Q2, the output end of the resistor R8 is respectively connected to the drain of the PMOS tube Q2 and the VOUT pin of the chip U1, the source of the PMOS tube Q2 is connected to the positive pole of the device light source connector J2, the negative pole of the device light source connector J2 is grounded, the GND pin of the chip U3 is grounded, the NC pin of the chip U3 is suspended, and the OF / OFF pin of the chip U3 is connected to the LIGHT end of the connector J1.
[0011] The beneficial effects of the utility model are:
[0012] The DC-DC boost circuit for spectrum detection of the utility model has the characteristics of realizing lithium battery charge and discharge management, controller and spectrometer and light source power supply, and switch control with high multifunctionality, thus avoiding the need for multiple modules to realize multiple functions due to single functional structure and low integration. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of a DC-DC boost circuit for spectrum detection of the utility model;
[0014] Figure 2 It is a structural schematic diagram of a charging and discharging circuit in a DC-DC boost circuit for spectrum detection of the utility model;
[0015] Figure 3 It is a structural schematic diagram of the main power switch circuit in the DC-DC boost circuit used for spectrum detection of the utility model;
[0016] Figure 4 It is a structural schematic diagram of a boost module in a DC-DC boost circuit for spectrum detection of the utility model;
[0017] Figure 5 The utility model is a schematic diagram of the structure of a light source switch control circuit in a DC-DC boost circuit for spectrum detection.
[0018] In the figure, 1. charging and discharging circuit, 2. main power switch circuit, 3. boost module, 4. light source switch control circuit. DETAILED DESCRIPTION
[0019] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0020] The utility model is used for a DC-DC boost circuit for spectrum detection, such as Figure 1 As shown, it includes a charge and discharge circuit 1, a main power switch circuit 2, a boost module 3, and a light source switch control circuit 4. The output end of the charge and discharge circuit 1 is connected to the input end of the main power switch circuit 2, the output end of the main power switch circuit 2 is connected to the input end of the boost module 3, and the output end of the boost module 3 is connected to the input end of the light source switch control circuit 4; the specific structure of the charge and discharge circuit 1 is as shown Figure 2As shown, it includes a fuse F1, the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and CE pin of chip U6, the GND pin, EP pin and TEMP pin of chip U6 are grounded, the PROG pin of chip U6 is connected to the input end of resistor R14, the output end of resistor R14 is grounded, the CHRG pin of chip U6 is connected to the input end of LED1, the output end of LED1 is connected to the input end of resistor R13, the output end of resistor R13 is connected to the VCC pin of chip U6, the STDBY pin of chip U6 is connected to the input end of LED2, the output end of LED2 is connected to the input end of resistor R13, and the BAT pins of chip U6 are respectively connected to capacitors The input end of C18 and the input end of capacitor C17, the output end of capacitor C18 is grounded, the first output end of capacitor C17 is connected to the S2 pin of field effect tube Q3, the second output end of capacitor C17 is grounded, the G2 pin of field effect tube Q3 is connected to the COUT pin of chip U4, the G1 pin of field effect tube Q3 is connected to the DOUT pin of chip U4, the D1 pin and D2 pin of field effect tube Q3 are suspended, the S1 pin of field effect tube Q3 is respectively connected to the VSS pin of chip U4 and the input end of capacitor C16, the output end of capacitor C16 is respectively connected to the input end of resistor R11 and the VDD pin of chip U4, the output end of resistor R11 is connected to the input end BAT+ of battery J4, the VSS pin of chip U4 is connected to the output end BAT- of battery J4, the input end BAT+ of battery J4 is connected to the main power switch circuit 2, and the NC pin of chip U4 is suspended; the specific structure of the main power switch circuit 2 is as follows Figure 3 As shown, it includes a chip U2, a VDD pin of the chip U2 is connected to the input end of the capacitor C15, the output end of the capacitor C15 is grounded, the VDD pin of the chip U2 is connected to the input end BAT+ of the battery J4, the OUT pin of the chip U2 is respectively connected to the input end of the resistor R10 and the input end of the resistor R9, the output end of the resistor R10 is connected to the gate of the PMOS tube Q1, the drain of the PMOS tube Q1 is connected to the output end of the resistor R9, the source of the PMOS tube Q1 is connected to the boost module 3, the NC pin of the chip U2 is suspended, the GND pin of the chip U2 is grounded, and the OF / OFF pin of the chip U2 is connected to the POWER end of the connector J1; the specific structure of the boost module 3 is as follows Figure 4As shown, the input voltage VIN is connected to the source of the PMOS tube Q1, and the input voltage VIN is respectively connected to the input end of the capacitor C10, the input end of the capacitor C11, the input end of the capacitor C12, the VIN pin of the chip U1 and the input end of the inductor L1. The output end of the capacitor C10, the output end of the capacitor C11 and the output end of the capacitor C12 are all grounded. The output end of the inductor L1 is respectively connected to the SW pin of the chip U1, the input end of the resistor R6 and the input end of the capacitor C4. The output end of the resistor R6 is grounded. The output end is connected to the FSW pin of chip U1, the output end of capacitor C4 is connected to the BOOT pin of chip U1, the SS pin of chip U1 is connected to the input end of capacitor C13, the output end of capacitor C13 is grounded, the VCC pin of chip U1 is connected to the input end of capacitor C2, the output end of capacitor C2 is grounded, the EN pin of chip U1 is connected to the input end of resistor R3, the output end of resistor R3 is connected to the input end of capacitor C2, the COMP pin of chip U1 is connected to the input end of resistor R4 and the output end of capacitor C3 respectively. The input end, the output end of the capacitor C3 is grounded, the output end of the resistor R4 is connected to the input end of the capacitor C1, the output end of the capacitor C1 is grounded, the ILIM pin of the chip U1 is connected to the input end of the resistor R2, the output end of the resistor R2 is grounded, the PGND pin and the AGND pin of the chip U1 are grounded, the NC pin and the MODE pin of the chip U1 are suspended, the VOUT pin of the chip U1 is respectively connected to the positive electrode of the electrolytic capacitor C5, the input end of the capacitor C6, the input end of the capacitor C7, the input end of the capacitor C8, the input end of the capacitor C9, the VOUT pin of the connector J3 and the light source switch control circuit 4, the negative electrode of the electrolytic capacitor C5, the output end of the capacitor C6, the output end of the capacitor C7, the output end of the capacitor C8 and the output end of the capacitor C9 are all grounded, the FB pin of the chip U1 is respectively connected to the input end of the resistor R5 and the input end of the resistor R1, the output end of the resistor R1 is grounded, the output end of the resistor R5 is connected to the positive electrode of the electrolytic capacitor C5, and the VOUT pin of the connector J3 is connected to the control circuit; the specific structure of the light source switch control circuit 4 is as follows Figure 5 As shown, it includes a chip U3, a VDD pin of the chip U3 is respectively connected to the input end of the capacitor C14 and the VOUT pin of the chip U1, the output end of the capacitor C14 is grounded, the OUT pin of the chip U3 is respectively connected to the input end of the resistor R7 and the input end of the resistor R8, the output end of the resistor R7 is connected to the gate of the PMOS tube Q2, the output end of the resistor R8 is respectively connected to the drain of the PMOS tube Q2 and the VOUT pin of the chip U1, the source of the PMOS tube Q2 is connected to the positive electrode of the device light source connector J2, the negative electrode of the device light source connector J2 is grounded, the GND pin of the chip U3 is grounded, the NC pin of the chip U3 is suspended, and the OF / OFF pin of the chip U3 is connected to the LIGHT end of the connector J1.
[0021] The charging and discharging circuit 1 is used to connect to an external power source, the main power switch circuit 2 is used to connect to a battery, the boost module 3 is used to connect to a control circuit, and the light source switch control circuit 4 is used to connect to a device light source.
[0022] The external power supply is input to the power management chip TP4056 through the typc port, and the input current is controlled according to the battery output voltage. When the charging voltage is greater than the battery charging voltage of 3.7V, the circuit is disconnected and charging stops. When the POWER button of the main power switch circuit 2 is pressed, the battery output voltage is boosted to 5V by the boost DC-DC circuit controlled by TPS6108, and the MCU control circuit is directly powered. At the same time, when the LIGHT button of the light source switch control circuit 4 is pressed, the DC-DC boost circuit outputs a voltage of 5V to power the device light source, and the entire system starts to work normally, which can realize the characteristics of lithium battery charge and discharge management, controller and spectrometer and light source power supply, and switch control with high multifunctionality and high integration.
[0023] Example 1
[0024] A DC-DC boost circuit for spectrum detection comprises a charge and discharge circuit 1, wherein the output end of the charge and discharge circuit 1 is connected to the input end of a main power switch circuit 2, the output end of the main power switch circuit 2 is connected to the input end of a boost module 3, the output end of the boost module 3 is connected to the input end of a light source switch control circuit 4, the charge and discharge circuit 1 comprises a fuse F1, the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and CE pin of chip U6, the GND pin, EP pin and TEMP pin of chip U6 are grounded, the PROG pin of chip U6 is connected to the input end of a resistor R14, the output end of the resistor R14 is grounded, the CHRG pin of chip U6 is connected to the input end of LED1, the output end of LED1 is connected to the input end of a resistor R13, the output end of the resistor R13 is connected to the VCC pin of chip U6, and the chip The STDBY pin of U6 is connected to the input end of LED2, the output end of LED2 is connected to the input end of resistor R13, the BAT pin of chip U6 is connected to the input end of capacitor C18 and the input end of capacitor C17 respectively, the output end of capacitor C18 is grounded, the first output end of capacitor C17 is connected to the S2 pin of field effect transistor Q3, the second output end of capacitor C17 is grounded, the G2 pin of field effect transistor Q3 is connected to the COUT pin of chip U4, and the G1 pin of field effect transistor Q3 is connected to the DOU pin of chip U4. T pin, D1 pin and D2 pin of field effect transistor Q3 are suspended, S1 pin of field effect transistor Q3 is connected to VSS pin of chip U4 and input end of capacitor C16 respectively, output end of capacitor C16 is connected to input end of resistor R11 and VDD pin of chip U4 respectively, output end of resistor R11 is connected to input end BAT+ of battery J4, VSS pin of chip U4 is connected to output end BAT- of battery J4, input end BAT+ of battery J4 is connected to main power switch circuit 2, NC pin of chip U4 is suspended.
[0025] Example 2
[0026] A DC-DC boost circuit for spectrum detection includes a charge and discharge circuit 1, wherein the output end of the charge and discharge circuit 1 is connected to the input end of a main power switch circuit 2, the output end of the main power switch circuit 2 is connected to the input end of a boost module 3, the output end of the boost module 3 is connected to the input end of a light source switch control circuit 4, the charge and discharge circuit 1 includes a fuse F1, the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and the CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and the CE pin of chip U6, and the GND pin of chip U6 is connected to the TEMP pin of chip U6. The PROG pin of chip U6 is connected to the input end of resistor R14, the output end of resistor R14 is grounded, the CHRG pin of chip U6 is connected to the input end of LED1, the output end of LED1 is connected to the input end of resistor R13, the output end of resistor R13 is connected to the VCC pin of chip U6, the STDBY pin of chip U6 is connected to the input end of LED2, the output end of LED2 is connected to the input end of resistor R13, the BAT pin of chip U6 is respectively connected to the input end of capacitor C18 and the input end of capacitor C17, the output end of capacitor C18 is grounded, and the first output end of capacitor C17 is connected to the S2 pin of field effect tube Q3. pin, the second output end of capacitor C17 is grounded, the G2 pin of field effect transistor Q3 is connected to the COUT pin of chip U4, the G1 pin of field effect transistor Q3 is connected to the DOUT pin of chip U4, the D1 pin and D2 pin of field effect transistor Q3 are suspended, the S1 pin of field effect transistor Q3 is connected to the VSS pin of chip U4 and the input end of capacitor C16 respectively, the output end of capacitor C16 is connected to the input end of resistor R11 and the VDD pin of chip U4 respectively, the output end of resistor R11 is connected to the input end BAT+ of battery J4, the VSS pin of chip U4 is connected to the output end BAT- of battery J4, the input end BAT+ of battery J4 is connected to the main power switch circuit 2, and the chip U4 The NC pin is suspended, and the main power switch circuit 2 includes a chip U2. The VDD pin of the chip U2 is connected to the input end of the capacitor C15, and the output end of the capacitor C15 is grounded. The VDD pin of the chip U2 is connected to the input end BAT+ of the battery J4. The OUT pin of the chip U2 is respectively connected to the input end of the resistor R10 and the input end of the resistor R9. The output end of the resistor R10 is connected to the gate of the PMOS tube Q1, the drain of the PMOS tube Q1 is connected to the output end of the resistor R9, and the source of the PMOS tube Q1 is connected to the boost module 3. The NC pin of the chip U2 is suspended, the GND pin of the chip U2 is grounded, and the OF / OFF pin of the chip U2 is connected to the POWER end of the connector J1.
[0027] Example 3
[0028] A DC-DC boost circuit for spectrum detection includes a charge and discharge circuit 1, wherein the output end of the charge and discharge circuit 1 is connected to the input end of a main power switch circuit 2, the output end of the main power switch circuit 2 is connected to the input end of a boost module 3, the output end of the boost module 3 is connected to the input end of a light source switch control circuit 4, the charge and discharge circuit 1 includes a fuse F1, the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and the CE pin of chip U6, the GND pin, the EP pin and the TE pin of chip U6 The MP pin is grounded, the PROG pin of the chip U6 is connected to the input end of the resistor R14, the output end of the resistor R14 is grounded, the CHRG pin of the chip U6 is connected to the input end of the LED1, the output end of the LED1 is connected to the input end of the resistor R13, the output end of the resistor R13 is connected to the VCC pin of the chip U6, the STDBY pin of the chip U6 is connected to the input end of the LED2, the output end of the LED2 is connected to the input end of the resistor R13, the BAT pin of the chip U6 is respectively connected to the input end of the capacitor C18 and the input end of the capacitor C17, the output end of the capacitor C18 is grounded, the first output end of the capacitor C17 is connected to the S2 pin of the field effect tube Q3, the second output end of the capacitor C17 is grounded, and the field effect The G2 pin of the field effect transistor Q3 is connected to the COUT pin of the chip U4, the G1 pin of the field effect transistor Q3 is connected to the DOUT pin of the chip U4, the D1 pin and the D2 pin of the field effect transistor Q3 are suspended, the S1 pin of the field effect transistor Q3 is respectively connected to the VSS pin of the chip U4 and the input end of the capacitor C16, the output end of the capacitor C16 is respectively connected to the input end of the resistor R11 and the VDD pin of the chip U4, the output end of the resistor R11 is connected to the input end BAT+ of the battery J4, the VSS pin of the chip U4 is connected to the output end BAT- of the battery J4, the input end BAT+ of the battery J4 is connected to the main power switch circuit 2, the NC pin of the chip U4 is suspended, the main power switch circuit 2 includes the chip U2, the chip U2 The VDD pin is connected to the input end of the capacitor C15, and the output end of the capacitor C15 is grounded. The VDD pin of the chip U2 is connected to the input end BAT+ of the battery J4. The OUT pin of the chip U2 is respectively connected to the input end of the resistor R10 and the input end of the resistor R9. The output end of the resistor R10 is connected to the gate of the PMOS tube Q1. The drain of the PMOS tube Q1 is connected to the output end of the resistor R9. The source of the PMOS tube Q1 is connected to the boost module 3. The NC pin of the chip U2 is suspended. The GND pin of the chip U2 is grounded. The OF / OFF pin of the chip U2 is connected to the POWER end of the connector J1. The boost module 3 includes an input voltage VIN, and the input voltage VIN is connected to the source of the PMOS tube Q1.The input voltage VIN is respectively connected to the input end of capacitor C10, the input end of capacitor C11, the input end of capacitor C12, the VIN pin of chip U1 and the input end of inductor L1. The output ends of capacitor C10, capacitor C11 and capacitor C12 are all grounded. The output end of inductor L1 is respectively connected to the SW pin of chip U1, the input end of resistor R6 and the input end of capacitor C4. The output end of resistor R6 is connected to the FSW pin of chip U1. The output end of capacitor C4 is connected to the BOOT pin of chip U1. The SS pin of chip U1 is connected to the input end of capacitor C13. The output end of capacitor C13 is grounded. The VCC pin of chip U1 is connected to The input end of the capacitor C2 is connected to the ground, the output end of the capacitor C2 is grounded, the EN pin of the chip U1 is connected to the input end of the resistor R3, the output end of the resistor R3 is connected to the input end of the capacitor C2, the COMP pin of the chip U1 is connected to the input end of the resistor R4 and the input end of the capacitor C3, the output end of the capacitor C3 is grounded, the output end of the resistor R4 is connected to the input end of the capacitor C1, the output end of the capacitor C1 is grounded, the ILIM pin of the chip U1 is connected to the input end of the resistor R2, the output end of the resistor R2 is grounded, the PGND pin and AGND pin of the chip U1 are grounded, the NC pin and MODE pin of the chip U1 are suspended, and the VOUT pins of the chip U1 are respectively The positive electrode of the electrolytic capacitor C5, the input end of the capacitor C6, the input end of the capacitor C7, the input end of the capacitor C8, the input end of the capacitor C9, the VOUT pin of the connector J3 and the light source switch control circuit 4 are connected. The negative electrode of the electrolytic capacitor C5, the output end of the capacitor C6, the output end of the capacitor C7, the output end of the capacitor C8 and the output end of the capacitor C9 are all grounded. The FB pin of the chip U1 is respectively connected to the input end of the resistor R5 and the input end of the resistor R1. The output end of the resistor R1 is grounded. The output end of the resistor R5 is connected to the positive electrode of the electrolytic capacitor C5. The VOUT pin of the connector J3 is connected to the control circuit. The light source switch control circuit 4 includes a chip U3. The chip U3 The VDD pin is connected to the input end of capacitor C14 and the VOUT pin of chip U1 respectively, the output end of capacitor C14 is grounded, the OUT pin of chip U3 is connected to the input end of resistor R7 and the input end of resistor R8 respectively, the output end of resistor R7 is connected to the gate of PMOS tube Q2, the output end of resistor R8 is connected to the drain of PMOS tube Q2 and the VOUT pin of chip U1 respectively, the source of PMOS tube Q2 is connected to the positive pole of device light source connector J2, the negative pole of device light source connector J2 is grounded, the GND pin of chip U3 is grounded, the NC pin of chip U3 is suspended, and the OF / OFF pin of chip U3 is connected to the LIGHT end of connector J1. ,
Claims
1. A DC-DC boost circuit for spectrum detection, characterized in that: It comprises a charge and discharge circuit (1), wherein the output end of the charge and discharge circuit (1) is connected to the input end of a main power switch circuit (2), the output end of the main power switch circuit (2) is connected to the input end of a boost module (3), and the output end of the boost module (3) is connected to the input end of a light source switch control circuit (4).
2. The DC-DC boost circuit for spectrum detection according to claim 1, characterized in that: The charging and discharging circuit (1) comprises a fuse F1, wherein the input end of the fuse F1 is connected to the VBUS pin of USB1, the EH pin of USB1 is grounded, the CC1 pin and CC2 pin of USB1 are suspended, the GND pin of USB1 is connected to the TEMP pin of chip U6, the output end of the fuse F1 is respectively connected to the VCC pin and CE pin of chip U6, the GND pin, EP pin and TEMP pin of chip U6 are grounded, the PROG pin of chip U6 is connected to the input end of resistor R14, the output end of resistor R14 is grounded, the CHRG pin of chip U6 is connected to the input end of LED1, the output end of LED1 is connected to the input end of resistor R13, the output end of resistor R13 is connected to the VCC pin of chip U6, the STDBY pin of chip U6 is connected to the input end of LED2, the output end of LED2 is connected to the input end of resistor R13, the B The AT pins are respectively connected to the input end of the capacitor C18 and the input end of the capacitor C17, the output end of the capacitor C18 is grounded, the first output end of the capacitor C17 is connected to the S2 pin of the field effect transistor Q3, the second output end of the capacitor C17 is grounded, the G2 pin of the field effect transistor Q3 is connected to the COUT pin of the chip U4, the G1 pin of the field effect transistor Q3 is connected to the DOUT pin of the chip U4, the D1 pin and the D2 pin of the field effect transistor Q3 are suspended, the S1 pin of the field effect transistor Q3 is respectively connected to the VSS pin of the chip U4 and the input end of the capacitor C16, the output end of the capacitor C16 is respectively connected to the input end of the resistor R11 and the VDD pin of the chip U4, the output end of the resistor R11 is connected to the input end BAT+ of the battery J4, the VSS pin of the chip U4 is connected to the output end BAT- of the battery J4, the input end BAT+ of the battery J4 is connected to the main power switch circuit (2), and the NC pin of the chip U4 is suspended.
3. The DC-DC boost circuit for spectrum detection according to claim 2, characterized in that: The main power switch circuit (2) comprises a chip U2, a VDD pin of the chip U2 is connected to the input end of a capacitor C15, an output end of the capacitor C15 is grounded, the VDD pin of the chip U2 is connected to the input end BAT+ of a battery J4, an OUT pin of the chip U2 is respectively connected to the input end of a resistor R10 and an input end of a resistor R9, an output end of the resistor R10 is connected to the gate of a PMOS tube Q1, a drain of the PMOS tube Q1 is connected to the output end of the resistor R9, a source of the PMOS tube Q1 is connected to a boost module (3), an NC pin of the chip U2 is suspended, a GND pin of the chip U2 is grounded, and an OF / OFF pin of the chip U2 is connected to the POWER end of a connector J1.
4. The DC-DC boost circuit for spectrum detection according to claim 3, characterized in that: The boost module (3) comprises an input voltage VIN, the input voltage VIN is connected to the source of the PMOS tube Q1, the input voltage VIN is respectively connected to the input end of the capacitor C10, the input end of the capacitor C11, the input end of the capacitor C12, the VIN pin of the chip U1 and the input end of the inductor L1, the output end of the capacitor C10, the output end of the capacitor C11 and the output end of the capacitor C12 are all grounded, the output end of the inductor L1 is respectively connected to the SW pin of the chip U1, the input end of the resistor R6 and the input end of the capacitor C4. The input end of the resistor R6 is connected to the FSW pin of the chip U1, the output end of the capacitor C4 is connected to the BOOT pin of the chip U1, the SS pin of the chip U1 is connected to the input end of the capacitor C13, the output end of the capacitor C13 is grounded, the VCC pin of the chip U1 is connected to the input end of the capacitor C2, the output end of the capacitor C2 is grounded, the EN pin of the chip U1 is connected to the input end of the resistor R3, the output end of the resistor R3 is connected to the input end of the capacitor C2, the COMP pin of the chip U1 is respectively connected to the input end of the resistor R4 and the input end of the capacitor C3, the output end of the capacitor C3 is grounded, the output end of the resistor R4 is connected to the input end of the capacitor C1, the output end of the capacitor C1 is grounded, the ILIM pin of the chip U1 is connected to the input end of the resistor R2, the output end of the resistor R2 is grounded, the PGND pin and the AGND pin of the chip U1 are grounded, the NC pin and the MODE pin of the chip U1 are suspended, and the VOUT pin of the chip U1 is respectively connected to the positive electrode, The input end of capacitor C6, the input end of capacitor C7, the input end of capacitor C8, the input end of capacitor C9, the VOUT pin of connector J3 and the light source switch control circuit (4), the negative electrode of the electrolytic capacitor C5, the output end of capacitor C6, the output end of capacitor C7, the output end of capacitor C8 and the output end of capacitor C9 are all grounded, the FB pin of the chip U1 is respectively connected to the input end of resistor R5 and the input end of resistor R1, the output end of resistor R1 is grounded, and the output end of resistor R5 is connected to the positive electrode of electrolytic capacitor C5.
5. The DC-DC boost circuit for spectrum detection according to claim 4, characterized in that: The VOUT pin of the connector J3 is connected to the control circuit.
6. The DC-DC boost circuit for spectrum detection according to claim 4, characterized in that: The light source switch control circuit (4) comprises a chip U3, wherein a VDD pin of the chip U3 is respectively connected to an input end of a capacitor C14 and a VOUT pin of a chip U1, an output end of the capacitor C14 is grounded, an OUT pin of the chip U3 is respectively connected to an input end of a resistor R7 and an input end of a resistor R8, an output end of the resistor R7 is connected to a gate of a PMOS tube Q2, an output end of the resistor R8 is respectively connected to a drain of the PMOS tube Q2 and a VOUT pin of the chip U1, a source of the PMOS tube Q2 is connected to a positive electrode of a device light source connector J2, a negative electrode of the device light source connector J2 is grounded, a GND pin of the chip U3 is grounded, an NC pin of the chip U3 is left floating, and an OF / OFF pin of the chip U3 is connected to a LIGHT end of the connector J1.