Directional pulse injection into a microelectronic system for electrostatic test
First Claim
1. An apparatus comprising:
- a pulse source to produce an electrical pulse;
a test pulse transmission line coupled to the pulse source;
a transformer coupled to the pulse source through the transmission line and to a conductive trace of a test board to apply the electrical pulse to the trace as a test pulse, the test board being connected to a microelectronic device under test, wherein the trace has a contact coupled to the device under test;
a cancellation pulse transmission line coupled to the pulse source; and
a cancellation pulse contact coupled to the pulse source through the cancellation pulse transmission line and to the trace on a side of the trace opposite the transformer to receive a cancellation signal from the pulse source and to couple the cancellation signal to the trace to cancel a portion of the test pulse.
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Accused Products
Abstract
A directional pulse injection system and method are described for injecting a pulse into a microelectronic system for electrostatic test. One example has a transformer coupled to a pulse source through a transmission line and to a conductive trace of a test board to apply the electrical pulse to the trace as a test pulse. The test board is connected to a microelectronic device under test. This example also has a cancellation pulse transmission line coupled to the pulse source and a cancellation pulse contact coupled to the pulse source through the cancellation pulse transmission line and to the trace on a side of the trace opposite the transformer to receive a cancellation signal from the pulse source and to couple the cancellation signal to the trace to cancel a portion of the test pulse.
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Citations
20 Claims
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1. An apparatus comprising:
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a pulse source to produce an electrical pulse; a test pulse transmission line coupled to the pulse source; a transformer coupled to the pulse source through the transmission line and to a conductive trace of a test board to apply the electrical pulse to the trace as a test pulse, the test board being connected to a microelectronic device under test, wherein the trace has a contact coupled to the device under test; a cancellation pulse transmission line coupled to the pulse source; and a cancellation pulse contact coupled to the pulse source through the cancellation pulse transmission line and to the trace on a side of the trace opposite the transformer to receive a cancellation signal from the pulse source and to couple the cancellation signal to the trace to cancel a portion of the test pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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producing an electrical pulse at a pulse source; applying the electrical pulse to a conductive trace of a test board as a test pulse through a transformer coupled to the pulse source through a transmission line, the test board being connected to a microelectronic device under test, wherein the trace has a contact coupled to the device under test; and applying a cancellation pulse from a cancellation pulse transmission line coupled to the pulse source to a cancellation pulse contact, the cancellation pulse contact being coupled to the trace on a side of the trace opposite the transformer to receive the cancellation signal from the pulse source and to couple the cancellation signal to the trace to cancel a portion of the test pulse. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An apparatus comprising:
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a test board connected to a device under test having a plurality of conductive traces coupled to pins of the device under test; a test controller coupled to the test board to drive the signals and power on the test board to simulate operation of the device under test; a pulse source to produce an electrical pulse; a test pulse transmission line coupled to the pulse source; a transformer coupled to the pulse source through the transmission line and to a selected conductive trace of the plurality of the conductive traces of the test board to apply the electrical pulse to the trace as a test pulse; a cancellation pulse transmission line coupled to the pulse source; and a cancellation pulse contact coupled to the pulse source through the cancellation pulse transmission line and to the selected trace on a side of the selected trace opposite the transformer to receive a cancellation signal from the pulse source and to couple the cancellation signal to the trace to cancel a portion of the test pulse. - View Dependent Claims (18, 19, 20)
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Specification