75W and 100W reference designs reduce energy waste, says Pulsiv

The first in a series of reference designs has been introduced by Pulsiv. The cost-optimised reference designs offer 75W (85W peak) and 100W (150W peak) output power with universal mains input and 48V output. 

The Pulsiv Osmium microcontroller and supporting components have been combined with a quasi-resonant flyback DC/DC converter to deliver an end-to-end flat efficiency of 90 per cent (91.5 per cent peak) from just 10W, which comfortably exceeds the US DoE Level VI and EU CoC Tier 2 requirements, said Pulsiv. The reference designs can be optimised using GaN and SiC technology where performance or size are more important than cost, the company advised.

The PSV-RDAD-75FB and PSV-RDAD-100FB reference designs have input frequency of 90 to 264V AC and 47 to 65kz frequency. They are designed for battery chargers, power adapters, LED lighting, white goods and industrial applications.

The design packages can be downloaded from the company website which includes a comprehensive datasheet, bill of materials, schematic and full set of altium files.

Pulsiv Osmium ensures that critical components operate at low temperatures to extend expected lifetime and ensure long-term reliability even under convection cooling. Inrush current has been eliminated, said the company, removing the need for additional current limiting components. 

Manufacturers of industrial power supplies and LED lighting solutions can benefit by simplifying designs and improving system installations.

Pulsiv’s CEO, Darrel Kingham, said: “Tackling the global energy crisis and delivering ambitious sustainability targets will require the electronics industry to embrace technology innovation and challenge conventional thinking. Pulsiv Osmium reference designs offer a cost effective method to reduce the amount of energy consumed in AC to DC power supplies and battery chargers under all operating conditions”. 

Founded in 2013 as a spin out from the University of Plymouth (UK), Pulsiv has developed technology to improve the efficiency of power electronics used in mains powered and battery charging applications as well as enabling more energy to be extracted from solar panels.  Pulsiv is committed to helping the world transition to renewable energy and reducing the impact that electronic devices have on the environment.


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