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

A modular power supply, ultra-small technology, applied in the direction of electrical components, electrical equipment structural parts, and conversion equipment without intermediate conversion to AC, it can solve the problems of different levels of product awareness, reduce the efficiency of transformer use, and can not meet the needs, etc., to achieve Satisfy the effect of small space layout, improve production efficiency and ensure stability

Inactive Publication Date: 2005-10-26
MORNSUN GUANGZHOU SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0014] Such as Figure 2~3 As shown, the module power supply circuit is a Jensen circuit composed of an oscillation transformer, a power output transformer and a pair of push-pull transistors. Transformer, and a soft start circuit composed of resistor R1 and capacitor C1 is connected to the input end of the circuit, and the output is a dual unregulated output. When making, first paste the electronic components 3 to the corresponding pad positions in each frame unit 5 on the lead frame according to this circuit, and then weld the input and output terminals of each winding on the toroidal transformer 2 to the corresponding terminals in the frame unit Above, the toroidal core of the transformer is stacked on the lead frame with the components attached. After the entire lead frame is assembled, the injection molding process is completed through mechanical equipment, and the plastic injection molding is used to form it, and the products on the lead frame are cut and separated to m...

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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...

Claims

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Application Information

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IPC IPC(8): H02M3/04
Inventor 尹向阳
Owner MORNSUN GUANGZHOU SCI & TECH
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