Main control chip power supply circuit with USB port communication

A main control chip and power supply circuit technology, applied in the direction of electrical digital data processing, instruments, digital data processing components, etc., can solve the problems of increasing power consumption, damage to the main control chip, etc.

Inactive Publication Date: 2020-11-27
大唐泰州热电有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a main control chip power supply circuit with USB port communication, a low-cost voltage control scheme that only uses 5 diodes and 2 resistors, and solves the problem when no battery is installed. In the case of USB port 5V voltage direct power supply damages the main control chip, and this part of the circuit does not increase power consumption when powered by batteries

Method used

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  • Main control chip power supply circuit with USB port communication
  • Main control chip power supply circuit with USB port communication
  • Main control chip power supply circuit with USB port communication

Examples

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0019] A main control chip power supply circuit containing USB port communication, such as figure 1 As shown, including USB port, step-down module 1, battery, main control chip U1, step-down module 2, USB conversion port chip U2, battery, among which:

[0020] The step-down module 1 includes diode 1 D1, diode 2 D2, diode 3 D3, and resistor 1 R1, the anode terminal of the USB port, diode 1 D1, diode 2 D2, diode 3 D3, and the anode terminal of the main control chip U1 ...

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Abstract

The invention discloses a main control chip power supply circuit with a USB port for communication. The device comprises a USB port, a voltage reduction module I, a main control chip U1, a voltage reduction module II and a USB conversion port chip U2, wherein the voltage reduction module I comprises a diode I D1, a diode II D2 and a diode III D3; and the voltage reduction module II comprises a diode IV D4 and a diode V D5. According to the invention, the main control chip U1 can work safely and reliably under the condition that external USB port communication is increased, and external power consumption is not increased when a battery supplies power.

Description

technical field [0001] The invention relates to a low-cost realization of safe power supply to a main control chip in the communication process of a USB port by using a simple passive device, and belongs to the technical field of low power consumption power supply. Background technique [0002] With the continuous development of IoT technology, there are more and more applications of sensors using Lora technology for wireless communication. Due to the low power consumption of the Lora sensor, two 1.5V dry batteries are often connected in series to obtain a 3V voltage to power the sensor. Based on the characteristics of Lora wireless communication, it is often inconvenient to use wireless configuration for information related to the sending and receiving frequency, address, and sending and receiving password of the sensor, so the USB communication function is usually added for configuration. However, the voltage of the USB port is generally 5V, and the main control chip of t...

Claims

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Application Information

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IPC IPC(8): G06F13/42G06F1/3296
CPCG06F1/3296G06F13/4282Y02D10/00
Inventor 刘晨孙强赵明逸金石张甫堂凌扬严洪峰
Owner 大唐泰州热电有限责任公司
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