Engineers crack 10kV barrier for DIP24 DC/DC converters
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RECOM, has designed a DC/DC converter in a DIP24 case that the company claims breaks the 10kV barrier. The new converters, the REC 3.5- and REC 6- ranges, offer 10kVDC resp.5 kVAC isolation.
At the heart of this new development is a new transformer concept, based on the 'Re3-Inforced' technology, for which patents have been applied. Although much smaller than conventional transformers, RECOM says this new concept features triple isolated transformer windings. Not only has the size been significantly reduced, the winding capacity has also been reduced by a factor 3 down to 20pF.
According to RECOM, this feature ensures extremely low leakages as required in medical applications, where the electronic circuit is in contact with the patient.
The new converters have power ratings of 3.5 and 6W and offer a 20% higher power rating compared to the predecessors, reaching an 86% efficiency level. The maximum ambient operating temperature without derating and with natural convection cooling is specified at 85°C for the REC 3.5. For the REC 6 the ambient operating temperature is 75°C. The case temperature can reach up to 105°C.
As well as medical applications, RECOM says the converters are suitable for industrial applications, such as energy and high voltage applications, or in IGBTcircuits.
