Power supply control device for TOSA optical device

Abstract

The utility model relates to the technical field of TOSA testing, in particular to a power supply control device for a TOSA optical device. Comprising an integrated power supply control panel which is provided with an upper computer communication module, a DCDC power supply module, an MCU module, an ADC data sampling module, a DAC analog voltage output module, a TEC controller module, a current sampling module, a voltage sampling module and an LCD touch liquid crystal display module. The difficulty and the cost of building a test environment of the TOSA optical device are reduced, and meanwhile, the compatibility of different types of TOSA optical devices during testing is improved.

Description

Technical Field

[0001] This utility model relates to the field of TOSA optical device testing technology, and more specifically, to a power supply control device for TOSA optical devices. Background Technology

[0002] Optical modules are primarily used to convert between electrical and optical signals, playing a crucial role in fiber optic communication systems. One of their main internal components, the Transmitter Optical Subassembly (TOSA), is a key component responsible for converting electrical signals into optical signals for transmission over optical fibers. The TOSA mainly consists of the following parts: Light source: typically a semiconductor laser diode (LD), responsible for generating the optical signal. Driving circuitry: including the LD driver circuit, automatic temperature control (ATC) circuit, and automatic power control (APT) circuit, ensuring stable operation of the laser diode. Monitoring components: such as a monitoring photodiode for monitoring optical power; and a thermistor for monitoring temperature parameters. Packaging: typically using TO coaxial packaging or butterfly packaging to ensure component stability and reliability.

[0003] A crucial step in the TOSA production process is testing. This testing requires the TOSA to function properly for measurements such as optical power, center wavelength, spectral width, drive current, drive voltage, operating temperature, and S-parameters. Therefore, we need to provide the TOSA with various necessary excitation sources to meet its operational requirements. Currently, testing TOSAs typically requires designing a dedicated power board or power array for each model, often resulting in incompatibility with other models, causing significant inconvenience and increasing testing costs.

[0004] When testing TOSA using existing solutions, common methods include... Figure 1 As shown. The host computer can be used to adjust the output parameters of the programmable power supply. The output of the programmable power supply is connected to the power input pin of the TOSA test fixture, the output of the TEC controller is connected to the TEC control pin of the TOSA test fixture, and the output terminal of the TOSA test fixture receives the TOSA under test.

[0005] Because different TOSA models may have slightly different pin definitions, when testing is required, a dedicated power board or power array compatible with the TOSA under test must be prepared in advance. The necessary excitations must be adjusted to the normal operating range of the TOSA, and the temperature of the TEC controller must be manually set by referring to a table to ensure the TOSA operates at the selected temperature. Therefore, setting up the entire test environment is time-consuming, labor-intensive, and costly. Furthermore, besides providing basic power excitations, it does not allow for individual monitoring and data acquisition of specific parameters. Utility Model Content

[0006] This invention addresses the problem that setting up existing TOSA testing environments is time-consuming, labor-intensive, and costly, and that, apart from providing basic power excitation, it cannot individually monitor and acquire data for certain specific indicators. It proposes a power supply control device for TOSA optical devices. By setting up an integrated power supply control board including a host computer communication module, a DC-DC power module, an MCU module, an ADC data sampling module, and a DAC analog voltage output module, it replaces the previously scattered DC excitation and control acquisition modules, reducing the difficulty and cost of setting up the TOSA testing environment while increasing compatibility for testing different TOSA models.

[0007] The specific implementation details of this utility model are as follows:

[0008] A power supply control device for TOSA optical devices, connected to a host computer, a TOSA test fixture, and a TOSA under test; including an integrated power supply control board and an AC-DC power adapter;

[0009] The integrated power supply control board internally integrates a host computer communication module, a DC-DC power supply module, an MCU module, an ADC data sampling module, and a DAC analog voltage output module;

[0010] One end of the host computer communication module is connected to the host computer, and the other end of the host computer communication module is connected to the MCU controller module;

[0011] The output terminal of the DC-DC power module is connected to the TOSA under test.

[0012] The input terminal of the ADC data sampling module is connected to the TOSA under test, and the output terminal of the ADC data sampling module is connected to the MCU module.

[0013] The input terminal of the DAC analog voltage output module is connected to the MCU module, and the output terminal of the DAC analog voltage output module is connected to the TOSA under test and the DC-DC power supply module.

[0014] The input terminal of the AC-DC power adapter is connected to the AC220V power grid, and the output terminal is connected to the DC-DC power module.

[0015] The AC-DC power adapter is used to convert AC220V voltage to DC9V voltage and output it to the integrated power supply control board;

[0016] The host computer communication module is used to convert the USB protocol into a serial communication protocol to enable communication with the host computer.

[0017] The DC-DC power module is used to provide Vdd and Vmpd voltages to the TOSA under test.

[0018] The ADC data sampling module is used to acquire the Vdd and Vmod voltages of the TOSA under test.

[0019] The DAC analog voltage output module is used to convert the acquired digital voltage into an analog voltage output.

[0020] The MCU module is used to adjust the Vdd and Vmod voltages of the input TOSA under test by adjusting the output voltage of the DAC analog voltage output module.

[0021] To better realize this utility model, the integrated power supply control board further includes a TEC controller module;

[0022] The temperature control input terminal of the TEC controller module is connected to the DAC analog voltage output module, and the temperature control status output terminal of the TEC controller module is connected to the MCU module.

[0023] To better realize this utility model, the integrated power supply control board further includes a current sampling module;

[0024] One end of the current sampling module is connected to the TOSA under test, and the other end is connected to the DC-DC power supply module.

[0025] To better realize this utility model, the integrated power supply control board further includes an LCD touch liquid crystal display module; the LCD touch liquid crystal display module includes an LCD chip U1;

[0026] The LCD chip U1 is connected to the MCU module.

[0027] To better realize this utility model, the host computer communication module further includes a USB connector U20 and an adapter chip U17;

[0028] The input terminal of the USB connector U20 is connected to the host computer, the second pin of the USB connector U20 is connected to the sixth pin of the adapter chip U17, and the third pin of the USB connector U20 is connected to the fifth pin of the adapter chip U17.

[0029] Pins 2 and 3 of the adapter chip U17 are connected to the MCU module.

[0030] To better realize this utility model, the TEC controller module further includes a power chip U26, a TEC control chip U28, and a DAC chip U30;

[0031] The input terminal of the power chip U26 is connected to the output terminal of the AC-DC power adapter, and the output terminal of the power chip U26 is connected to the 8th pin of the TEC control chip U28.

[0032] Pin 24 of the TEC control chip U28 is connected to pin 5 of the DAC chip U30;

[0033] The DAC chip U30 is connected to the MCU module via the SPI1 interface.

[0034] To better realize this utility model, the DAC analog voltage output module further includes a DAC chip U2;

[0035] Pin 2 of the DAC chip is connected to the SPI1 interface of the MCU module, and the output of the DAC chip is connected to the TOSA under test and the DC-DC power supply module.

[0036] To better realize this utility model, the MCU module further includes an MCU chip U14;

[0037] Pin 69 of the MCU chip U14 is connected to pin 2 of the adapter chip U17, and pin 68 of the MCU chip U14 is connected to pin 3 of the adapter chip U17.

[0038] To better realize this utility model, the LCD touch liquid crystal display module further includes a voltage conversion unit;

[0039] The voltage conversion unit includes chip U3;

[0040] The input terminal of chip U3 is connected to the output terminal of the AC-DC power adapter, and the output terminal of chip U3 is connected to pin 28 of LCD chip U1.

[0041] To better realize this utility model, the integrated power supply control board further includes a current sampling module;

[0042] The current sampling module includes a resistor R38 and an amplifier U11;

[0043] One end of the resistor R38 is connected to the output terminal of the DC-DC power module, and the other end is connected to the Vdd power supply pin of the TOSA under test.

[0044] The positive input terminal of the amplifier U11 is connected to one end of the resistor R38, the negative input terminal of the amplifier U11 is connected to the other end of the resistor R38, and the output terminal of the amplifier U11 is connected to the input terminal of the ADC data sampling module.

[0045] This utility model has the following beneficial effects:

[0046] This invention integrates various DC excitation sources and data acquisition circuits required for TOSA testing into an integrated power supply and control board, effectively reducing the difficulty of setting up the TOSA testing environment. At the same time, it is also highly compatible with different models of TOSA testing, providing strong flexibility and reducing testing costs. Attached Figure Description

[0047] Figure 1 This is a diagram of the existing TOSA test system architecture.

[0048] Figure 2 This is a schematic diagram of the power supply control device for TOSA optical devices provided by this utility model.

[0049] Figure 3 The schematic diagram of the host computer communication module provided by this utility model.

[0050] Figure 4 The schematic diagram of the MCU module circuit provided by this utility model.

[0051] Figure 5 The schematic diagram of the DC-DC power module provided by this utility model.

[0052] Figure 6 The schematic diagram of the DAC analog voltage output module provided by this utility model.

[0053] Figure 7 The schematic diagram of the ADC data acquisition module provided by this utility model.

[0054] Figure 8 The circuit schematic diagram of the TEC controller module provided by this utility model.

[0055] Figure 9 The schematic diagram of the current sampling module circuit provided by this utility model.

[0056] Figure 10 The schematic diagram of the LCD touch liquid crystal display module provided by this utility model.

[0057] Figure 11 The schematic diagram of the voltage conversion unit circuit in the LCD touch liquid crystal display module provided by this utility model.

[0058] Figure 12 The schematic diagram of the output interface circuit of the integrated power supply control board provided by this utility model. Detailed Implementation

[0059] To more clearly illustrate the technical solutions of the embodiments of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of this utility model, not all embodiments, and therefore should not be regarded as a limitation on the scope of protection. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] Example 1:

[0062] This embodiment proposes a power supply control device for TOSA optical devices, such as... Figure 2 As shown, it connects to the host computer, the TOSA test fixture, and the TOSA under test; it includes an integrated power supply control board and an AC-DC power adapter.

[0063] The integrated power supply control board internally integrates a host computer communication module, a DC-DC power supply module, an MCU module, an ADC data sampling module, and a DAC analog voltage output module;

[0064] One end of the host computer communication module is connected to the host computer, and the other end of the host computer communication module is connected to the MCU controller module;

[0065] The output terminal of the DC-DC power module is connected to the TOSA under test.

[0066] The input terminal of the ADC data sampling module is connected to the TOSA under test, and the output terminal of the ADC data sampling module is connected to the MCU module.

[0067] The input terminal of the DAC analog voltage output module is connected to the MCU module, and the output terminal of the DAC analog voltage output module is connected to the TOSA under test and the DC-DC power supply module.

[0068] The input terminal of the AC-DC power adapter is connected to the AC220V power grid, and the output terminal is connected to the DC-DC power module.

[0069] The AC-DC power adapter is used to convert AC220V voltage to DC9V voltage and output it to the integrated power supply control board;

[0070] The host computer communication module is used to convert the USB protocol into a serial communication protocol to enable communication with the host computer.

[0071] The DC-DC power module is used to provide Vdd and Vmpd voltages to the TOSA under test.

[0072] The ADC data sampling module is used to acquire the Vdd and Vmod voltages of the TOSA under test.

[0073] The DAC analog voltage output module is used to convert the acquired digital voltage into an analog voltage output.

[0074] The MCU module is used to adjust the Vdd and Vmod output voltages of the TOSA under test by adjusting the output voltage of the DAC analog voltage output module.

[0075] Working principle: This embodiment replaces the original scattered DC excitation and control acquisition modules by setting up an integrated power supply control board including a host computer communication module, a DC-DC power supply module, an MCU module, an ADC data sampling module, and a DAC analog voltage output module. This reduces the difficulty and cost of setting up the TOSA test environment while increasing compatibility with different models of TOSA.

[0076] The DC-DC power module is mainly responsible for providing the Vdd voltage (TO_VDD1) and Vmpd voltage (VMPD1) to the TOSA under test. The main circuit is as follows: Figure 5 , Figure 6 As shown.

[0077] An external AC-DC power adapter converts AC220V to DC9V and inputs it to the integrated power supply control board via power connector J1. Then, the internal traces of the integrated power supply control board PCB connect pins 13 / 14 of U10 (LT3012) to DC9V. The MCU adjusts the output voltage of pin 2 of the multi-channel DAC chip U2 (LTC2656) through the SPI1 interface, which changes the voltage of Vadj on pin 5 of U10, thereby adjusting the output voltage of Vdd.

[0078] Example 2:

[0079] This embodiment is based on the above embodiment 1, such as... Figure 3 As shown, a specific embodiment is used to illustrate the host computer communication module.

[0080] The host computer communication module includes a USB connector U20 and an adapter chip U17;

[0081] The input terminal of the USB connector U20 is connected to the host computer, the second pin of the USB connector U20 is connected to the sixth pin of the adapter chip U17, and the third pin of the USB connector U20 is connected to the fifth pin of the adapter chip U17.

[0082] Pins 2 and 3 of the adapter chip U17 are connected to the MCU module.

[0083] Working principle: The host computer communication module in this embodiment is mainly responsible for communication between the host computer and the integrated power supply control board, such as... Figure 3 As shown, U20 is a USB connector. Its internal D+ / D- signals are connected to pins 5 and 6 of the adapter chip U17. The adapter chip U17 (CH340G) is responsible for converting between the USB protocol and the serial communication protocol. After the protocol conversion is completed, the signal is transmitted via pins 2 and 3 of the adapter chip U17 to... Figure 4 Connect pins 69 and 68 of the MCU-U14 (STM32F103VET6).

[0084] The other parts of this embodiment are the same as those in Embodiment 1 above, so they will not be described again.

[0085] Example 3:

[0086] This embodiment is based on any one of Embodiments 1-2 above, such as Figure 6 As shown, a specific embodiment of the DAC analog voltage output module is illustrated.

[0087] The DAC analog voltage output module includes a DAC chip U2;

[0088] Pin 2 of the DAC chip is connected to the SPI1 interface of the MCU module, and the output of the DAC chip is connected to the TOSA under test.

[0089] Working principle: DAC analog voltage output module, such as Figure 6 As shown, the MCU adjusts the output voltage of different channels of the multi-channel DAC chip U2 (LTC2656) through the SPI1 interface, thereby adjusting the Vdd and Vmod voltages of the TOSA under test.

[0090] The other parts of this embodiment are the same as any one of the above embodiments 1-2, so they will not be described again.

[0091] Example 4:

[0092] This embodiment is based on any one of embodiments 1-3 above, such as Figure 7 As shown, the ADC data acquisition module is illustrated with a specific embodiment.

[0093] The ADC data acquisition module includes chip U6 and chip U7;

[0094] Working principle: The Vdd and Vmod voltages of the TOSA under test are acquired in real time by U6 / U7 (ADS1118), transmitted to the MCU via SPI2, and finally displayed on the LCD screen of the integrated power supply control board. The data can also be transmitted to the host computer via USB for display.

[0095] The other parts of this embodiment are the same as any one of the embodiments 1-3 above, so they will not be described again.

[0096] Example 5:

[0097] This embodiment is based on any one of embodiments 1-4 above, such as Figure 8 As shown, a specific embodiment of the TEC controller module is illustrated.

[0098] The TEC controller module includes a power chip U26, a TEC control chip U28, and a DAC chip U30;

[0099] The input terminal of the power chip U26 is connected to the output terminal of the AC-DC power adapter, and the output terminal of the power chip U26 is connected to the 8th pin of the TEC control chip U28.

[0100] Pin 24 of the TEC control chip U28 is connected to pin 5 of the DAC chip U30;

[0101] The DAC chip U30 is connected to the MCU module via the SPI1 interface.

[0102] Working principle: TEC controller module such as Figure 8 As shown, the power chip U26 (LM2596S) is the power chip for the TEC control module, which converts the DC9V input to 3.3V to meet the power requirements for the normal operation of the TEC control chip U28 (ADN8834ACBZ).

[0103] U30 (LTC2632) is a DAC chip. After the target temperature of the TEC is set through the LCD touch screen module of the integrated power supply control board or the host computer, the instruction is transmitted to the MCU. The MCU communicates with the DAC chip U30 through SPI1. Pin 5 of the DAC chip U30 converts the set temperature into voltage and inputs it to pin 24 of the TEC control chip U28 to complete the setting of the target temperature.

[0104] The other parts of this embodiment are the same as any one of the embodiments 1-4 above, so they will not be described again.

[0105] Example 6:

[0106] This embodiment is based on any one of the embodiments 1-5 above, such as Figure 9 As shown, a specific embodiment of the current sampling module is described in detail.

[0107] One end of the current sampling module is connected to the TOSA under test, and the other end is connected to the DC-DC power supply module.

[0108] The current sampling module includes a resistor R38 and an amplifier U11;

[0109] One end of the resistor R38 is connected to the output terminal of the DC-DC power module, and the other end is connected to the VDD power pin of the TOSA under test.

[0110] The positive input terminal of the amplifier U11 is connected to one end of the resistor R38, the negative input terminal of the amplifier U11 is connected to the other end of the resistor R38, and the output terminal of the amplifier U11 is connected to the input terminal of the ADC data sampling module.

[0111] Working principle: VDD1_1 is the output voltage of the DC-DC power module, connected to one end of R38. The other end of R38 is connected to the Vdd power supply pin of the TOSA under test. R38 is a high-precision sampling resistor with a resistance of R. When the TOSA under test is working normally, the current flowing through R38 will generate a voltage difference across R38. Connect the two ends of R38 to pins 3 and 4 of amplifier U11 (MAX44284). Finally, the voltage difference Vout, amplified by N times, is output through pin 5 of amplifier U11 to the ADC. The Idd current is calculated using the formula (I=Vout / N / R).

[0112] The voltage sampling module mainly uses ADC sampling. In some scenarios, because the voltage being sampled is too small, in the millivolt / microvolt range, an operational amplifier is used to amplify it before it is input into the ADC for sampling.

[0113] The other parts of this embodiment are the same as any one of the above embodiments 1-5, so they will not be described again.

[0114] Example 7:

[0115] This embodiment is based on any one of embodiments 1-6 above, such as Figure 10 As shown, a specific embodiment of the LCD touch liquid crystal display module will be described in detail.

[0116] The LCD touch liquid crystal display module includes an LCD chip U1;

[0117] The LCD chip U1 is connected to the MCU module.

[0118] The LCD touch liquid crystal display module also includes a voltage conversion unit;

[0119] The voltage conversion unit includes chip U3;

[0120] The input terminal of chip U3 is connected to the output terminal of the AC-DC power adapter, and the output terminal of chip U3 is connected to pin 28 of LCD chip U1.

[0121] Working principle: The LCD touch screen module is mainly used to adjust the various output excitation ranges of the integrated power supply control board and display various output and monitoring information of the integrated power supply control board, such as... Figure 10 As shown, the electrical network names on each pin of LCD chip U1 are... Figure 3 The pins of the MCU with the same network name are connected accordingly. The +5V power supply of the LCD chip U1 is provided by... Figure 11 The circuit output in the LCD chip U3 converts the input DC9V voltage to DC5V and outputs it to pin 28 of the LCD chip U1.

[0122] The other parts of this embodiment are the same as any one of the embodiments 1-6 above, so they will not be described again.

[0123] Example 8:

[0124] This embodiment is based on any one of the embodiments 1-7 above, such as Figure 12 As shown, the output interface of the integrated power supply control board is described using a specific embodiment.

[0125] In actual testing, setting up the entire test environment was simple and convenient. First, the host computer was connected to the integrated power supply control board via a USB data cable. The integrated power supply control board was then connected to the 220V power grid via an external AC-DC power adapter. Then, the output interfaces on the integrated power supply control board, such as... Figure 12 As shown, this includes the various interfaces required for the four-channel TOSA test (U31) and the single-channel TOSA test interface (U33). Various power outputs (TO_VDDn / VMPDn), control interfaces (TEC+ / TEC- / VMODn), and data acquisition interfaces (THREM) are connected to the 20-pin connector on the TOSA test fixture via 20-pin connectors. When testing different TOSA models, a single DuPont cable from the peripheral device can be used to complete the hardware connection between the integrated power supply control board and the TOSA test fixture, offering strong flexibility and compatibility. Finally, the TOSA under test is connected to the test system through the TOSA test fixture.

[0126] After the test environment is set up, the overall test operation process is roughly as follows: The Vdd voltage, Vmpd voltage, Vmod voltage (modulation voltage), and target operating temperature of the TOSA optical device under test are set via the LCD touchscreen display module on the integrated power supply control board. Various excitation and monitoring information are also displayed on the LCD screen of the integrated power supply control board, allowing the user to determine the operating status of the TOSA optical device under the current settings. In addition to setting the Vdd voltage, Vmpd voltage, Vmod voltage (modulation voltage), and target operating temperature of the TEC via the LCD touchscreen display module on the integrated power supply control board, these output excitations can also be configured via host computer software. Simultaneously, the host computer software monitors and collects the lockout status of the Vdd voltage, Vmod voltage, Idd current, Impd current, and TEC temperature in real time.

[0127] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A power supply control device for TOSA optical devices, connected to a host computer, a TOSA optical device test fixture, and a TOSA optical device under test; characterized in that, Includes an integrated power supply control board and an AC-DC power adapter; The integrated power supply control board internally integrates a host computer communication module, a DC-DC power supply module, an MCU module, an ADC data sampling module, and a DAC analog voltage output module; One end of the host computer communication module is connected to the host computer, and the other end of the host computer communication module is connected to the MCU module; The output terminal of the DC-DC power module is connected to the TOSA optical device under test. The input terminal of the ADC data sampling module is connected to the TOSA optical device under test, and the output terminal of the ADC data sampling module is connected to the MCU module. The input terminal of the DAC analog voltage output module is connected to the MCU module, and the output terminal of the DAC analog voltage output module is connected to the TOSA optical device under test and the DC-DC power supply module. The input terminal of the AC-DC power adapter is connected to the AC220V power grid, and the output terminal is connected to the DC-DC power module. The AC-DC power adapter is used to convert AC220V voltage to DC9V voltage and output it to the integrated power supply control board; The host computer communication module is used to convert the USB protocol into a serial communication protocol to enable communication with the host computer. The DC-DC power module is used to provide Vdd and Vmpd voltages to the TOSA optical device under test. The ADC data sampling module is used to acquire the Vdd and Vmod voltages of the TOSA optical device under test. The DAC analog voltage output module is used to convert the acquired digital voltage into an analog voltage output. The MCU module is used to adjust the Vdd and Vmod voltages of the input TOSA optical device under test by adjusting the output voltage of the DAC analog voltage output module.

2. The power supply control device for a TOSA optical device according to claim 1, characterized in that, The integrated power supply control board also includes a TEC controller module; The temperature control input terminal of the TEC controller module is connected to the DAC analog voltage output module, and the temperature control status output terminal of the TEC controller module is connected to the MCU module.

3. The power supply control device for a TOSA optical device according to claim 1, characterized in that, The integrated power supply control board also includes a current sampling module; One end of the current sampling module is connected to the TOSA optical device under test, and the other end is connected to the DC-DC power supply module.

4. The power supply control device for a TOSA optical device according to claim 1, characterized in that, The integrated power supply control board also includes an LCD touch screen display module; the LCD touch screen display module includes an LCD chip U1; The LCD chip U1 is connected to the MCU module.

5. A power supply control device for a TOSA optical device according to claim 1, characterized in that, The host computer communication module includes a USB connector U20 and an adapter chip U17; The input terminal of the USB connector U20 is connected to the host computer, the second pin of the USB connector U20 is connected to the sixth pin of the adapter chip U17, and the third pin of the USB connector U20 is connected to the fifth pin of the adapter chip U17. Pins 2 and 3 of the adapter chip U17 are connected to the MCU module.

6. A power supply control device for a TOSA optical device according to claim 2, characterized in that, The TEC controller module includes a power chip U26, a TEC control chip U28, and a DAC chip U30; The input terminal of the power chip U26 is connected to the output terminal of the AC-DC power adapter, and the output terminal of the power chip U26 is connected to the 8th pin of the TEC control chip U28. Pin 24 of the TEC control chip U28 is connected to pin 5 of the DAC chip U30; The DAC chip U30 is connected to the MCU module via the SPI1 interface.

7. A power supply control device for a TOSA optical device according to claim 6, characterized in that, The DAC analog voltage output module includes a DAC chip U2; Pin 2 of the DAC chip is connected to the SPI1 interface of the MCU module, and the output of the DAC chip is connected to the TOSA optical device under test and the DC-DC power supply module.

8. A power supply control device for a TOSA optical device according to claim 5, characterized in that, The MCU module includes an MCU chip U14; Pin 69 of the MCU chip U14 is connected to pin 2 of the adapter chip U17, and pin 68 of the MCU chip U14 is connected to pin 3 of the adapter chip U17.

9. A power supply control device for a TOSA optical device according to claim 4, characterized in that, The LCD touch liquid crystal display module also includes a voltage conversion unit; The voltage conversion unit includes chip U3; The input terminal of chip U3 is connected to the output terminal of the AC-DC power adapter, and the output terminal of chip U3 is connected to pin 28 of LCD chip U1.

10. A power supply control device for a TOSA optical device according to claim 1, characterized in that, The integrated power supply control board also includes a current sampling module; The current sampling module includes a resistor R38 and an amplifier U11; One end of the resistor R38 is connected to the output terminal of the DC-DC power module, and the other end is connected to the Vdd power supply pin of the TOSA optical device under test. The positive input terminal of the amplifier U11 is connected to one end of the resistor R38, the negative input terminal of the amplifier U11 is connected to the other end of the resistor R38, and the output terminal of the amplifier U11 is connected to the input terminal of the ADC data sampling module.

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