With the development of switching power supply with high frequency, electromagnetic interference often puzzles designers. In order to suppress external electromagnetic noise and external internal electromagnetic interference of switching power supply, it is necessary to add common mode choke to switching power supply. In addition, the development trend of miniaturization and integration of electronic equipment such as Bluetooth and computers, and various electromagnetic and application requirements put forward by various industry standards have ushered in a new round of upgrading of interference suppression components: miniaturization and lightweight under the premise of ensuring performance.
SQ flexible flat cable common mode choke XRSQ1010-10mH-H launched by Xiangru Electronics came into being under this market background, which significantly improved EMC and saved space. This inductor is designed with precision winding and magnetic shielding technology. Compared with the traditional winding inductor, it can significantly reduce the magnetic leakage and reduce the impact on peripheral devices. This makes it widely used in high frequency power supply applications, especially where electromagnetic interference suppression and power quality improvement are needed.
Application scheme of XRSQ1010-10mH-H power supply
Fig. 1 SQ flexible flat cable common mode choke XRSQ1010-10mH-H application scheme in power port.
In the power supply design scheme, there are mainly two paths for external interference: common mode interference and differential mode interference. As shown in Figure 1, the interference between the power supply line and the power supply ground line at the power input port is differential mode interference. When external interference interferes with the circuit through this interference path, the application of SQ flexible flat cable common mode choke XRSQ1010-10mH-H can increase the input impedance during high-frequency interference, thus reducing the impact on the internal circuit.
Similarly, the interference between the power line and the earth (also known as the chassis ground) and between the power ground and the earth is common-mode interference. External interference can also affect the post-stage power supply circuit through these two paths. Using SQ flexible flat cable common mode choke XRSQ1010-10mH-H can also weaken high-frequency interference, consume external energy and improve the anti-interference ability of products.
SQ flexible flat cable common mode choke XRSQ1010-10mH-H has the following advantages:
High anti-interference characteristic
Compared with the traditional magnetic ring inductor, in the same product design space, due to the better high-frequency skin effect of SQ flexible flat cable common mode choke, the inductance can be larger and the current can be improved. The minimum inductance of SQ flexible flat cable common mode choke XRSQ1010-10mH-H is 10mH. Therefore, it can provide higher impedance when dealing with external interference and improve the anti-interference ability of products.
EMI optimization
Compared with the traditional round wire design, the flexible flat cable design of common mode choke XRSQ1010-10mH-H can make the electric field evenly dispersed, the parasitic capacitance between turns is smaller, and the interference of components to external electromagnetic radiation is significantly reduced. It is especially suitable for all kinds of electronic products that have strict requirements on the external environment and are worn by human body.
Low temperature rise
Compared with the traditional magnetic ring inductor, SQ flexible flat cable common mode choke XRSQ1010-10mH-H adopts special winding structure and magnetic core material, which has high space utilization rate and low temperature rise caused by current passing under the same wire diameter. This feature can effectively expand the application range of this component, especially suitable for power supply applications of various handheld devices.
downsizing
SQ flexible flat cable common mode choke XRSQ1010-10mH-H is designed with 0.1t×0.7mm UEWH flat wire winding structure, which can save space and meet the requirements of miniaturization and integration design of electronic products at present. The product appearance is shown in Figure 2.
Figure 2 SQ Appearance of flexible flat cable common mode choke
To sum up, SQ flexible flat cable common mode choke XRSQ1010-10mH-H of Xiangru Electronics can suppress electromagnetic interference, improve the quality of power supply, ensure the stability and reliability of switching power supply, adapt to the trend of miniaturization and integration of electronic equipment, and have better performance and smaller size. In addition, SQ flexible flat cable common mode choke is also suitable for communication power supply, adapter, lighting, household appliances, new energy, energy storage, medical care, military industry and other fields.
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