Ferrites highly efficient at partial loads
27 May 2009
Passive Components
Epcos has developed a new power ferrite material with an exceptionally low power loss. In contrast to existing materials, N95 offers a constant loss minimum of 310 kW/m³ over a broad temperature range between 60°C and 100°C. It also boasts high flux density of 525 mT at 25°C and 410 mT at 100°C.
The new material is particularly suitable for power converters in switch-mode power supplies, allowing high efficiency even at partial load. The material’s high degree of temperature independence is an advantage under alternating load factors and above all in the partial load range of power supplies, where it reduces the thermal loss and thus unnecessarily consumed power. Typical applications are power supplies for servers with frequently changing load factors. N95 is predominantly available in core types E, ER and ETD.
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