Square Loop Cores Application and Benefits

 

Applications

Mag amps are particularly well suited for outputs with currents of 1 amp to several tens of amps, although they are also used at lower currents where tight regulation and efficiency are extremely important.

Conventional regulated outputs are limited at higher frequencies and output currents. Linear regulators cannot handle output currents that exceed one or two amperes efficiently, and thus require heat sinking schemes, which increase the size of the power supply. Independent switched-mode sub-regulators avoid this inefficiency, but usually require circuitry which is more complex, expensive and less reliable than a mag amp.

Standard sizes are available from 9.6 mm to 34.1 mm OD and the possibility of manufacturing custom sizes also exists. Core coatings meeting UL94V-0 and temperature class F are available upon request.

Benefits

Square Loop magnetic cores are specifically designed to exhibit an extremely square dc hysteresis loop and high Bsat resulting in the following important benefits:

• Low Saturated Permeability

• Low Coercive Field - including a small reset current

• Low Profile - enabling weight and volume reduction of up to 50%

• Low Loss - resulting from micro-thin cobalt based amorphous ribbon (18um)

Physical and Magnetic Properties

Characterstics

Standard Core size Tables and Ordering Info