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Device for testing power of USB interface

一种USB接口、功率测试的技术，应用在电源测试、功能检验、检测有故障的计算机硬件等方向，能够解决测试不便、很难满足USB接口功率满载测试的要求、USB接口不能达到满载测试等问题，达到测试准确且方便的效果

Inactive Publication Date: 2009-12-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the USB interface is mostly used on servers and personal computers. There is a stress test in the product testing process, which requires the USB interface to be plugged into a USB device for a full power test. However, the power of these USB devices such as a USB floppy disk drive is It is set, and the maximum rated power of these USB devices is different, and generally the required current for the maximum rated power is 100mA-400mA, which is difficult to meet the requirements of the USB interface power full load (full load current is 500mA) test, so in the actual test process The USB interface in the medium cannot achieve the real full-load test, resulting in inaccurate testing; and because there are many USB interfaces on the server and personal computer, generally there are 6-8, and the stress test requires all the USB interfaces to be tested at the same time, causing the test to be inaccurate. inconvenient

Method used

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  • Device for testing power of USB interface
  • Device for testing power of USB interface
  • Device for testing power of USB interface

Examples

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Embodiment Construction

[0009] Please refer to figure 1 and figure 2 , a preferred embodiment of the USB interface power testing device of the present invention includes a first USB interface 10 , a second USB interface 20 and a simulation device 30 . The simulation device 30 is provided with several buttons A, B, C, D... (four in the present embodiment), and the first USB interface 10 is used to connect a USB interface of a circuit board to be tested. The second connection interface 20 is used to connect a USB device such as a USB mouse, a USB keyboard, etc., and the buttons A, B, C, D... are used to select the required simulated power consumption, and the USB interface power test device can be A simulation test is performed on the power consumption of the USB interface on the circuit board.

[0010] The analog device 30 includes voltage regulators 26 and 28, capacitors C1 and C2, resistor R0, variable resistor RL1, several load resistors connected in parallel (in this embodiment, four load resis...

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Abstract

The invention relates to a device for testing the power of a USB interface, comprising a first USB interface, a second USB interface and an analog device. The first USB interface is used for connecting a circuit board to be tested, the second USB interface is used for connecting a USB device; the analog device comprises a first voltage stabilizer, a first resistor, a second resistor and a load resistor; the first voltage stabilizer comprises an input end, an output end and an adjusting end; a signal pin of the first USB interface is correspondingly connected with a signal pin of the second USB interface; the voltage end of the first USB interface is respectively connected with the voltage end of the second USB interface and the input end of the first voltage stabilizer; the first resistor is connected between the output end and the signal pin of the first USB interface; the signal pin of a voltage stabilizer is grounded by the second resistor, and the output end of the voltage stabilizer is grounded by the load resistor. The device for testing the power of the USB interface is convenient to test accurately.

Description

technical field [0001] The invention relates to a testing device, in particular to a USB interface power testing device. Background technique [0002] In the development process of electronic systems, reliability testing is an important hurdle to ensure product quality, one of which is the power full load test of the system interface. At present, the USB interface is mostly used on servers and personal computers. There is a stress test in the product testing process, which requires the USB interface to be plugged into a USB device for a full power test. However, the power of these USB devices such as a USB floppy disk drive is It is set, and the maximum rated power of these USB devices is different, and generally the required current for the maximum rated power is 100mA-400mA, which is difficult to meet the requirements of the USB interface power full load (full load current is 500mA) test, so in the actual test process The USB interface in the medium cannot achieve the rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/26
CPCG01R31/40
Inventor 曹翔
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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