Power_electronics Features

A New Approach to Circuit Breaker Design Using Silicon Carbide Switches - Nov 21
Mechanical circuit breakers can be low cost with minimal losses, but they operate slowly and wear out. Solid state versions overcome the problems and are becoming increasing viable as replacements at...
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Power Electronics Europe News
Digital PoL supply is based on single-stage topology
The Solus Power Topology integrates a conventional buck converter into a SEPIC converter to form a SEPIC-fed buck converter. It is, says the company, a single stage topology with one magnetic element, one control switch and two commutation switches that are optimally controlled by pulse-width modulation (PWM). The NDM3ZS-60 non-isolated module outputs 60A in low-profile vertical and horizontal packages. With lower voltage and current stresses in the topology coupled with an inherent gate charge extraction process, the topology is claimed to reduce switching turn-on losses by 75% and switching turn-off losses by 99% on the control FET when compared to a conventional buck converter. The topology further increases total efficiency by distributing the energy delivery into multiple paths, reducing circuit conduction losses by nearly 50%. Efficiency peaks at 91.3% at 12V DC in to 1V DC out, 50% load. Three configurations are available, a through-hole vertical version measuring 33.02x8.92x18.11mm and a horizontal version measuring 33.02x18.11x7.44mm in surface mount or through-hole configurations.

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