Pulse Electronics Corporation, a leading provider of electronic components, expands its P0584/85NL high isolation gate drive transformer line with a new series that uses insulation wire on all windings, making them compliant to safety standards such as IEC61558 and IEC60601 for reinforced isolation. The P0584/85NL series provides isolation in MOSFET and IGBT drivers in industrial applications such as motor drive circuits and solar inverters and for power supplies for a range of medical devices. The P0584/85ANL versions extend these to applications that require higher levels of safety and isolation with 30% increased isolation capability (to 4250Vrms) and 20% greater volt-second capability. Higher Isolation Capabilities "Existing toroidal gate drive transformers with triple insulated Teflon wire on just one winding are not compliant to certain safety standards which require mechanical support between windings, even when triple insulated wire is used on one winding," explained Gerard Healy, product manager, Pulse Electronics Power Business Unit. "Pulse's new P0584/85ANL series uses insulated wires on all windings, making them fully compliant. In addition, by using smaller wire diameters, Pulse can increase the number of turns to increase volt-second capability within the same platform size." Pulse's P0584/85ANL high isolation gate drive transformers expand Pulse's P0584/85NL transformer series to offer higher isolation capabilities. They come in a robust package with 8mm creepage distance. The transformers are RoHS compliant and meet standard EIA481 requirements. P0584/85NL are UL recognized/TUV certified to IEC 60950 while the ANL versions are compliant with the requirements of IEC 61558 and IEC 60601 for reinforced insulation. They are available in tube packaging. Prices are about: P0584NL -- $1.49, P0585NL -- $1.69, with an additional 20% for the ANL versions (FCA HK). Lead time is eight weeks.
Pulse Electronics Corporation, a leading provider of electronic components, introduces a new series of high isolation switch mode transformers that come in a standard SMT package. Pulse Electronics' PH9185 series provides a reinforced insulation power supply that's compatible with the MAXIM™ MAX253 to power RS-485/RS-232 transceivers. The transformers operate in a fixed duty cycle push-pull topology that delivers lower power (up to 3W) from a low voltage source and a working voltage up to 4000V, with 5000V isolation and only 8mm creepage. These low cost, efficient transformers offer high power density and safety isolation for use in industrial control systems, building automation, smart grid, surveillance, automotive, renewable energy, and aeronautics applications. "Pulse's isolation transformers are unique because the customized EP7 platform has a large separation between the core and pin in a surface mount package," explained Gerard Healy, field application engineer, Pulse Electronics Power Division. "For standard SMD platforms (EP and others), the pin is generally close to the core so it's not suitable for high isolation. High isolation transformers tend to be through-hole, with an offset pin, and oversized to meet isolation requirements, so they are relatively large for the low powers they are delivering. Pulse's design provides a large safety separation (8mm creepage distance) between pins without over-sizing the device itself, so it is high isolation and safety agency compliant in a compact surface mount package." Pulse's switch mode high isolation transformers are RoHS compliant and meet standard EIA481 requirements. They have been certified by UL to comply with UL60950-1 2 edition, by CAN/CSA C22.2 NO. 60950-1-07 2 edition, and by TUV to comply with EN61558-1 and EN61558-2-16 with reinforced insulation. 4000Vrms isolation voltage is guaranteed to meet this requirement.
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