Is the customer's packaging difficult to modify and the inductance overheating? Gujing breaks through the situation with "chips" to help the power module operate stably!
In power module design, a small selection of inductance often affects the performance and reliability of the entire product. Recently, Gu Jing encountered a tricky case from a new customer in Zhejiang: the customer insisted on using a 0510 packaged color ring inductor in the initial selection of the power module for the new case, requiring a inductance of 150uH and a rated current of 300mA.
However, the domestic brand supplier that the customer originally cooperated with only had a maximum current of 175mA for the same packaged product. In actual use, the product suffered from severe overheating and its performance could not meet the standards, causing the project to come to a standstill.
Faced with the strict requirement of customers that the packaging cannot be changed, the Gujing technical team responded quickly and analyzed the crux of the problem in depth. The core of the problem lies in the insufficient saturation magnetic flux density of traditional magnetic cores, which cannot carry higher currents in small packages and generate unsaturated heat. So, we decisively recommended the 0510 color ring inductor using the exclusive high saturation magnetic flux density core of Gujing, with a inductance of 150uH, aiming to improve the current carrying capacity from the material source.
The sample will be delivered to the customer's hands as soon as possible. After actual testing, the current requirement of 300mA has been successfully met, proving the correctness of our material route. But the customer technical team, who strives for excellence, has pointed out that the originally planned 150uH sensor has affected the overall balance and current carrying characteristics in the actual circuit, and needs to be adjusted.
This is not a simple specification change, but requires a deeper understanding of the application circuit. Gujing technical engineers have conducted in-depth communication with the customer's technical department, analyzing in detail the technical details and performance requirements of the entire case. Based on sufficient communication and analysis, we quickly provided new samples of 180uH and 220uH for customers to test and verify.
In the end, the test data brought delightful results: the 220uH inductance perfectly met all requirements. Its resistance remains stable between 1.68 Ω and 1.7 Ω, with a sensing range of 215uH-232uH. Especially when loaded with a current of 0.4A, the rate of change in inductance is only 0.9%, fully meeting the long-term working requirements of 300mA. More importantly, the previously headache inducing issue of 'severe burning' has been completely resolved. The customer is very satisfied with this and the product has entered the stage of small-scale matching.
The rapid resolution of this technical challenge is not only due to active collaboration, but also relies on Gujing's deep accumulation in the advantageous category of color ring inductors:
High sensitivity capability: Our color ring inductor has achieved a maximum sensitivity of 100mH and has stable mass production and shipment, which can meet a wider range of filtering and energy storage needs.
High current characteristics: As shown in this case, we have achieved a breakthrough in current capability within a small package. Similarly packaged in 0510, with a sensitivity of 1mH, the current can be covered from 100mA to 300mA through different material schemes, providing customers with flexible choices.
Stable and reliable: The working temperature range of ordinary inductors is usually from -20 ° C to+105 ° C. However, the color ring inductor of Gujing, with its unique magnetic core powder formula and special epoxy resin formula coated on the outer layer, can expand the working temperature range to -40 ° C to+125 ° C, and can easily cope with special harsh environments such as automotive electronics, industrial equipment, outdoor power supplies, etc.
Gu Jing's solution is not just about providing an inductor
We are well aware that behind every component, there is a pursuit of stability, efficiency, and reliability in the overall system. Gujing not only provides inductance products that meet the parameters, but also an integrated solution based on material science, electromagnetic design, and application experience. When you face challenges such as packaging restrictions, temperature rise issues, sensitivity matching, or harsh environments, the Gujing team is willing to be your solid technical support.
From precise recommendations to collaborative debugging, from sample validation to bulk supply, we are committed to using "chip" services to help your products stand out and achieve stability and long-term success.
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