DCP020505U Isolation

Teodor Neagoe:

The DCP020505U  cannot  be used  to isolate primary and secondary grounds at voltages > 60VDC or >42V AC.  The converter  limits on this different potential is a function  of the design SELV creepage and clearance limits as defined by UL. 

The statement below is :

The external continuous voltage difference limits are defined as voltages as measured between VIN (-) and Vout (-) ground). The converter is designed as ground fault isolation device. It is not designed to operate with a continuous voltage isolation barrier at greater than 60VDC. The isolation 1 second test validates only the magnetic coating separation between primary and secondary transformer wire.

The maximum potential difference ( Vin(+) to Vout ground ) as referenced to  a common ground is limited to continuous 60V DC or 42V Peak  AC transient between Vin(-) and Output ( ground) . . The primary and secondary transformer wires will  contact each other separated by magnet wire over-coating. The transformer wires are single coating material and not doulbe coated. The UL listing, E199929, voltage limits are SELV or 60VDC continuous or 42V transient peak.

Tom Guerin

Teodor:

Thanks for the e-mail. TI does not have any products which will meet this requirement.

Tom