Ground Bounce Generator for ATE Noise Simulation
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Solution Overview
Problem
Automatic test equipment (ATE) fails to effectively simulate real-world ground noise conditions for device testing, leading to inadequate evaluation of a device's resistance to ground noise, as existing systems either neglect or inadequately generate ground noise.
Innovation Solution
Incorporating a ground bounce generator in series between the device under test and the ground, which uses a resistor and a switch to control current flow, generating artificial ground noise by varying voltage drops across the resistor, simulating realistic ground noise conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ground bounce generator is added to generate ground noise, then the realism of ground noise simulation is improved, but the device complexity increases
Solution Approach 1:
A ground bounce generator is introduced as an intermediary component between the device under test and the ground connection. This generator includes a resistor and switch that actively generate ground noise by controlling current flow through the resistor, thereby simulating realistic ground bounce conditions without requiring complex modifications to the entire testing system.
Solution Approach 2:
The ground bounce generator changes the electrical parameters (current, voltage drop) across the resistor dynamically by controlling the switch states. By varying these parameters, the system can generate different ground noise characteristics to simulate various real-world conditions, achieving high simulation realism through controlled parameter variation rather than complex hardware.
2Ease of operation
If the ground bounce generator uses a resistor and switch to control current flow, then the ground noise generation becomes controllable, but the device complexity increases
Solution Approach 1:
The ground bounce generator is segmented into distinct functional components: a resistor for generating voltage drops, switches for controlling current flow paths, and connections to different ground points. This segmentation allows each component to perform its specific function independently, making the overall system controllable and easier to manage despite adding complexity.
Solution Approach 2:
The ground bounce generator employs dynamic switching mechanisms where switches can be turned on or off to control current flow through the resistor. This dynamic control enables the system to generate ground noise with varying characteristics (presence, absence, intensity) as needed for different testing scenarios, providing operational flexibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the ATE to generate controllable and realistic ground noise, allowing for more accurate testing of a device's performance and resistance to ground noise, thereby improving the simulation of real-life application environments.
Implementation Method 1
generating artificial ground noise by varying voltage drops across the resistor
Implementation Method 2
uses a resistor and a switch to control current flow, generating artificial ground noise by varying voltage drops across the resistor
Data Source
AI summary
The present disclosure provides a method of testing a testing device with a ground noise. The method includes coupling a device under test in series between a source and a ground in an automatic test equipment, coupling a ground bounce generator in series between the device under test and the ground, coupling the testing device to the device under test, providing a current by the source through the device under test and the ground bounce generator, controlling the ground bounce generator to generate the ground noise, and collecting a performance result of the testing device in the automatic test equipment.