Design of a DC power supply system based on DSP - Power Circuit - Circuit Diagram

Abstract: To enhance the reliability and intelligence of the system's power supply, this paper proposes a design method for a DC power supply system centered around Texas Instruments' high-performance digital signal processor, the TMS320F2812, utilizing the CAN bus. Additionally, the paper discusses in detail the system software flow design and debugging methods based on the CAN bus. Keywords: DSP; DC power supply; CAN bus; parameter acquisition

Introduction: The reliable and safe operation of the power supply within a system is heavily reliant on its real-time monitoring and control capabilities. To improve the reliability of the system's power supply, this study presents a design method for a DC power supply system using the TMS320F2812 digital signal processor, which integrates an eCAN module and an ADC acquisition module as the core controller. This system enables the intelligent management of the system's DC power supply by continuously monitoring voltage and current parameters while providing quick responses to overcurrent and undervoltage protection.

1. System Overall Design: In most practical systems, there are typically multiple loads. For simplicity in analysis, we discuss this in terms of a single load. The system's composition is illustrated in Figure 1. The power manager serves as the control center of the power supply system, featuring a DSP processor, CAN interface, and current/voltage detection circuits. Upon system startup, the voltage and current of the battery can be continuously monitored. The hybrid charger supports both DC and AC power inputs, where DC originates from the vehicle's generator set. When the power manager detects that the vehicle generator's speed exceeds a preset value, relay 1 is activated to enable DC power supply, otherwise, it disconnects. AC power is sourced from the mains at 220V; when the power manager detects mains connection, relay 1 disconnects to prioritize AC power. Relay 2 functions as a control element in the system and disconnects if the current sensor detects an overcurrent condition. Communication between the host computer and the power manager occurs via CAN. Once the system powers up, the power manager sends voltage and current signal acquisition data to the upper computer and can also receive command instructions from the upper computer.

[3]

In today’s fast-paced technological world, ensuring the reliability and efficiency of power supplies has become increasingly important. As systems grow more complex, integrating advanced processors like the TMS320F2812 with CAN bus technology provides a robust solution for managing multiple power sources and loads simultaneously. This approach not only ensures real-time monitoring but also enhances the ability to respond swiftly to potential faults, thereby increasing overall system stability and performance. Furthermore, the inclusion of an ADC acquisition module allows for precise parameter tracking, which is crucial for maintaining optimal operational conditions. By leveraging these technologies, engineers can develop smarter, more reliable power supply solutions that meet the demands of modern applications.

All Accessories Of Laser Level

Green Laser Protective Glasses,Laser Protection Glasses,Laser Protection Eyewear,Laser protection

Guangdong Tumtec Communication Technology Co., Ltd , https://www.gdtumtec.com