A power integrity testing device and method

Abstract

The invention discloses a power integrity testing device and method. The testing device is arranged between a power input port CON1 and a power output port CON2, and includes a trigger switch circuit, a monostable flip-flop, a Schmidt inverter, and a D flip-flop. circuit, NPN transistor and P-channel MOS transistor Q2; the output terminal of the trigger switch circuit is connected to the input terminal of the monostable trigger, and the output terminal of the monostable trigger is connected to the D flip-flop circuit through the Schmitt inverter U4 The input terminal of the D flip-flop circuit is connected to the base of the transistor Q1 through the resistor R8, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the gate of the MOS transistor Q2 through the resistor R7, and the source of the MOS transistor Q2 Connect to the power input port CON1, and connect the drain to the power output port CON2. The test device and method provided by the invention can improve the work efficiency of test engineers, and are convenient and simple to use and low in cost.

Description

technical field [0001] The invention relates to the field of testing, and more particularly, to a power integrity testing device and method with high testing efficiency. Background technique [0002] In the power integrity test, the voltage / signal waveform or timing relationship at the moment of power-on or power-off is often tested, and it is inevitable to face such difficulties: [0003] 1. If you just test the power-on and power-off waveforms of a signal, you need one hand to hold the oscilloscope probe for testing, and the other hand to toggle the power switch. This is barely operable, but for devices without power switches, It becomes very difficult to insert and unplug the power plug with one hand while using the other hand for testing; [0004] 2. If you need to test the timing relationship between the two voltages / signals at the moment of power on and off, you must ask a colleague to assist or weld the test line (clamped on the clip of the probe), which will inevita...

AI Technical Summary

Problems solved by technology

[0003] 1. If you just test the power-on and power-off waveforms of a signal, you need one hand to hold the oscilloscope probe for testing, and the other hand to toggle the power switch. This is barely operable, but for devices without power switches, It becomes very difficult to insert and unplug the power plug with one hand while using the other hand for testing;

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