Unlock instant, AI-driven research and patent intelligence for your innovation.

Design method convenient for switching power supply test

A technology of switching power supply and design method, applied in power supply testing, printed circuit components and other directions, can solve the problems that do not conform to actual design conditions, cannot be connected to chip-side electronic load meters, and cannot accurately simulate chip pull-up conditions, etc. The effect of stable switching power supply circuit, improved design stability, and stable switching power supply

Inactive Publication Date: 2016-02-03
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the switching power supply test at the present stage, due to the dense layout of the chip, it is impossible to connect the electronic load instrument at the chip end, so that the loading situation of the chip cannot be accurately simulated, and only in the figure 2 The power module shown (including the power chip, output inductor, and output capacitor) is simulated and tested. This test method does not conform to the actual design situation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Design method convenient for switching power supply test
  • Design method convenient for switching power supply test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a design method for switching power supply testing is convenient. In the process of circuit board layout design, all power pads and vias are connected through planes, and all ground pads and vias are connected through planes. A solderable area is reserved at the pad and the via hole;

[0029] Then, the circuit board is punched and the components are soldered; among them, the part of the chip that needs to pull the current is not soldered to the chip, but the corresponding welding test terminal. The test terminal is preferably welded on the pad of the power supply and ground; if the pad cannot For soldering, solder to the reserved soldering area of ​​the adjacent via hole, and one of the pads corresponds to soldering a test terminal;

[0030] After the test terminals are welded, connect the corresponding test fixtures to each of the welded test terminals, and the other ends of the test terminals are respectively connected to the power supply ...

Embodiment 2

[0033] On the basis of Embodiment 1, the test terminal described in this embodiment is made of copper material, the upper part of the terminal is a circle, which is convenient for test connection, and the lower part of the terminal is a copper column, which is convenient for welding on the pad of the power supply and the ground.

Embodiment 3

[0035] On the basis of embodiment 2, the test fixture described in this embodiment has several triangular clamps at the bottom, which are connected to the test terminals; copper wires are connected on it, and the outside of the copper wires is wrapped with insulating plastic; the copper wires Connected to the fastening device, the structure of the fastening device includes a hollow part and fastening screws arranged in the hollow part, the hollow part is a wire hole connected to the electronic load instrument, after the wire is inserted into the hollow part, the fastening screw is tightened to complete connect.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a design method convenient for a switching power supply test. In the circuit board Layout design process, all the power supply Pad and through holes are connected via a plane, all the ground Pad and the through holes are connected via the plane, and a weldable region is reserved at the power supply and ground Pad and the through holes; then punching of a circuit board and welding of components and parts can be performed; no chip is welded at a chip part requiring tensile load current and test terminals are correspondingly welded, and the test terminals are preferably welded on the power supply and ground Pad; if the test terminals cannot be welded on the Pad, the test terminals are welded in a neighboring through hole reserved welding region, and one test terminal is correspondingly welded on one Pad; after welding of the test terminals is completed, a test clamp is correspondingly connected with each completely welded test terminal, and the other end of the test terminal is respectively connected with the power supply of an electronic load meter and the ground; and after completion of all connection, the circuit board is powered on and then the electronic load meter is turned on for tensile load, and corresponding switching power supply item tests are correspondingly performed.

Description

technical field [0001] The invention relates to the technical field of switching power supply testing, in particular to a design method for switching power supply testing. Background technique [0002] In the field of electronic design, the circuit board is the physical carrier of all electronic design content, and the final realization of all electronic design intentions must be realized through the design of the circuit board. So circuit board design is an integral part of any electronic device. Among them, the power supply design of the key part of the circuit board widely uses switching power supply, which greatly promotes the rapid development of switching power supply technology. While the switching power supply is developing towards high frequency, high reliability, low power consumption, low noise, and integration, it also puts forward stricter requirements for product function and performance testing. [0003] The switching power supply is the direct provider of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40H05K1/02
Inventor 李德恒
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD