Ultra-small DC-DC module power and making method thereof

Abstract

This invention discloses a super-small DC-DC module supply and a manufacturing method including a packaging unit and a lead frame. A supply circuit in the packaging unit is a Jensen circuit composed of a vibration transformer, a power output transformer and a pair of push-pull transistors, in which, the vibration transformer and a power output transformer apply circle transformers winded by circle magnetic cores to be packaged into a SMD DC-DC module supply product with double-row pins.

Description

technical field [0001] The invention relates to an ultra-small DC-DC module power supply, and also relates to a manufacturing method of the ultra-small DC-DC module power supply. Background technique [0002] Module power supply is widely used in industrial computer, field bus, instrumentation, access equipment, communication equipment, medical equipment, automotive electronics, aerospace, etc. Due to the characteristics of short design cycle, high reliability, and easy system upgrade by using modules to build power systems, the application of module power supplies is becoming more and more extensive. Especially in recent years, due to the rapid development of data services and the continuous promotion of distributed power supply systems, the growth rate of module power supplies has exceeded that of primary power supplies. However, with the miniaturization and portable development of products, the module power supply is required to be smaller and more efficient. At present...

AI Technical Summary

Problems solved by technology

[0003] According to the principle of the circuit, the application of the transformer in this circuit requires the transformer to perform energy conversion in an unsaturated state, and at the same time use the saturation characteristics of the transformer to form an oscillation, which increases the physical loss of the magnetic core and reduces the transformer. Efficiency

And because the two states cannot be taken into account, it is difficult to achieve circuit optimization through function matching, so as to increase the conversion power and reduce the product volume, resulting in the large size of the existing DC-DC module power supply, usually above 19.6*6.0*10.0mm

In addition, because this circuit uses the same magnetic core as two transformers, when the input and output voltages are high, the number of winding coils is large, and the small magnetic core cannot meet the technological requirements. Products that can achieve a power of 1W or less, and a conversion voltage with an input voltage of 12VDC and an output voltage of 15VDC or below this voltage range, products with a power requirement of 2W or more can only use single in-line plug-in (SIP) or dual Larger module power products such as in-line plug-in (DIP)

Moreover, during the processing of this kind of plug-in products, people need to manually insert the terminals. Due to the different operating habits, proficiency and different degrees of understanding of the products, the plug-in products will also have subtle differences.

This human factor affects the quality stability of the product virtually. The most important thing is to increase the processing steps of the product and reduce the processing efficiency of the product.

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