Overview:
For isolated DC/DC converters, the input and output circuits are usually
coupled via a power transformer, and there is not a direct current path
between the two. Isolation voltage describes the effectiveness of this
input-to output electrical separation. It describes the amplitude of voltage
that can be applied across the input and output with no significant resulting
current flow.
Procedure:
Connect the converter to the hi-pot tester. All input pins should be tied
together, as should all output pins. Set the hi-pot test voltage to its
specified value and the leakage-current detection threshold to the specified
value. Apply power to the circuit with the hi-pot tester and allow the
circuit to remain powered for a minimum of 10 seconds. If the maximum
value of leakage current is not exceeded during the hi-pot test, the converter
complies with the listed input-to-output isolation voltage specification.
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