WE-LHMD is a SMT-mountable storage choke from Würth Elektronik optimized for filter topologies in Class-D amplifiers. Thanks to their iron powder cores, the high-current inductors for audio applications (available in 1008 and 1213 packages) display stable behavior at high peak currents.
EMC noise is a common issue related to use of electrical drives. The following article published by Electronics Weekly written by Christofer Kronschnabl and Wolfgang Ernst of Panasonic discuss use of capacitors and inductors to suppress these effects.
Würth Elektronik introduces its WE-HIDA series of high-current inductor storage choke for audio amplifiers
With WE-HIDA, Würth Elektronik offers a storage choke optimized for Class D amplifiers. The high current inductor is characterized by low core losses, very low DC resistances from 2.5 mΩ to 14.8 mΩ and high saturation currents.
Panasonic released an application note on its low-loss power inductor (choke) within the fuel-injection solenoid circuit of an ECU featuring small size, ruggedness, and specifications tailored to the high-ripple-current dc-dc converter.
The WE-PD-family storage chokes are ideal for integrated DC/DC converters and switching controllers with output powers from 0.01 W to 300 W. The inductors help to raise the efficiency of switching controllers to over 95 percent. Whereas the “Standard” and “Robust” series have a NiZn core, the “Performance” variant with MnZn attains even higher saturation current values for the same component size.