Datasheet

DCV01 Series

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SBVS014A –AUGUST 2000–REVISED DECEMBER 2013

Isolation Voltage

Hipot test, flash-tested, withstand voltage, proof voltage, dielectric withstand voltage, and isolation test voltage

are all terms that relate to the same thing: a test voltage applied for a specified time across a component

designed to provide electrical isolation to verify the integrity of that isolation.

TI’s DCx series of dc-dc converters are all 100% production tested at their stated isolation voltage.

For the DCP and DCR series, this voltage is 1.0 kVDC for one second.

For the DCV series, this voltage is 1.5 kVDC for one second.

For the DCH series, this voltage is 3.5 kVDC for one second.

Repeated High-Voltage Isolation Testing

Repeated high-voltage isolation testing of a barrier component can degrade the isolation capability, depending on

materials, construction, and environment. The DCx series of dc-dc converters have toroidal, enameled, wire

isolation transformers with no additional insulation between the primary and secondary windings. While a device

can be expected to withstand several times the stated test voltage, the isolation capability depends on the wire

insulation. Any material, including this enamel (typically polyurethane), is susceptible to eventual chemical

degradation when subject to very-high applied voltages. Therefore, strictly limit the number of high-voltage tests

and repeated high-voltage isolation testing. However, if it is absolutely required, reduce the voltage by 20% from

specified test voltage with a duration limit of one second per test.