你的位置：Serial Number | Model | Resistance（mΩ) | TCR（ppm/℃) | Accuracy（%） | Encapsulation |
1 | 2512MB03FR030S | 30 | ±50 | ±1 | 2512 |
2 | 2512MB03FR040S | 40 | ±50 | ±1 | 2512 |
3 | 2512MB03FR050S | 50 | ±50 | ±1 | 2512 |
4 | 2512MB03FR075S | 75 | ±50 | ±1 | 2512 |
5 | 2512MB03FR100S | 100 | ±50 | ±1 | 2512 |
6 | 2512MB03FR150S | 150 | ±50 | ±1 | 2512 |
CSR Typical Application - Power Supply
Choosing the appropriate CSR is crucial for ensuring system performance and safety when designing power systems. Designers need to consider factors such as the resistance value, power rating, temperature coefficient, and accuracy of CSR to meet specific application requirements. Through careful design, CSR can play a critical role in power systems, improving energy efficiency, ensuring safety, and optimizing overall system performance
- Current monitoring and control
- Improve energy efficiency
- Overcurrent protection
- Accurate voltage reference
- thermal management
- Improve system reliability
How to choose and maintain CSR for power systems that require high long-term stability?
Choose CSR with high precision and low temperature coefficient: In order to ensure stable operation of the power system at different temperatures, CSR with low temperature coefficient should be selected to reduce the impact of temperature changes on resistance values and ensure measurement accuracy.
Considering the long-term stability of CSR: Choose CSR that can maintain its performance parameters after long-term use, which usually means choosing CSR manufactured from high-quality materials.
Regular maintenance and calibration: CSR in the power system should be regularly maintained, including cleaning, inspection, and necessary calibration, to ensure that it continuously provides accurate current measurement.
Use high-quality components and materials: In power systems, high-quality components and materials should be used to improve overall reliability and stability.
Implement regular inspections and testing: Through regular inspections and testing, potential problems can be identified and resolved in a timely manner, thereby avoiding power system failures.
Develop a detailed maintenance plan: Develop a detailed maintenance plan for CSR in the power system, including maintenance cycles, maintenance content, and responsible persons, to ensure the systematic and continuous maintenance work.
Consideration of environmental factors: Ensure that CSR can operate stably in the environment where the power system is located, including factors such as temperature, humidity, and mechanical stress.
Timely replacement of damaged components: During maintenance, if CSR or other related components are found to be damaged or have decreased performance, they should be replaced in a timely manner to ensure the stability of the power system
How to choose the appropriate current sensing resistor (CSR) to meet specific performance requirements when designing a power system?
How to choose the appropriate current sensing resistor (CSR) to meet specific performance requirements when designing a power system
How to choose the appropriate current sensing resistor (CSR) to meet specific performance requirements when designing a power system
Choose high-precision CSR: Choose CSR with high design and manufacturing precision, which are usually produced by reputable manufacturers and can provide accurate current measurement under specified working conditions. Temperature compensation: Choose CSR with low temperature coefficient to reduce the impact of temperature changes on resistance and current measurements. Temperature compensation technology can also be used to improve measurement accuracy. Appropriate heat dissipation design: Ensure good heat dissipation conditions for CSR in the power system, avoiding performance degradation or damage caused by overheating. This may include sufficient heat sinks, appropriate air circulation, or cooling systems. Circuit design: Adopt appropriate filtering and buffering techniques in circuit design to reduce the impact of noise and transient currents on CSR accuracy. Quality control and testing: During the development phase of the power system, strict quality control and testing are carried out on CSR to ensure that its performance meets expectations in practical applications. Long term stability: Choose CSR with good long-term stability, as these resistors can maintain their performance parameters unchanged after long-term use. Environmental factors: Consider the environmental factors that the power system will operate in, such as humidity, vibration, and mechanical stress, and select a CSR that can adapt to these conditions. Regular maintenance: Establish a regular maintenance plan to inspect and test the performance of CSR, ensuring its continuous provision of accurate current measurements.
What is the role of CSR in power systems?
- CSR is mainly used for monitoring and controlling the current in power systems. In LED power supplies and switch mode power supplies, CSR achieves precise control of current by detecting the current and generating a voltage drop across the resistor. This is crucial for protecting the power system from overcurrent damage, improving energy efficiency, and ensuring stable output.
What are the considerations for CSR in design?
Factors to consider during design include resistance value, power rating, temperature coefficient, packaging size, and cost. Low resistance values can reduce power loss, but may require more precise amplifiers. In addition, resistors with low temperature coefficients can provide more stable measurements, but the cost may be higher.
What are the possible problems that CSR may encounter in practical applications?
Possible problems encountered in practical applications include the influence of parasitic resistance, errors caused by PCB layout, and changes in resistance values due to environmental temperature fluctuations. To reduce these effects, Kelvin connections (four terminal connections) can be used to minimize the impact of parasitic resistance, and the performance of the signal chain can be optimized through carefully designed PCB layouts.