Revolutionize your power electronics designs with

Optimized Power Factor Correction for AC to DC power supplies

99.5%

FRONT-END EFFICIENCY

96–98%

POWER FACTOR

50%

LESS ENERGY WASTE

ZERO

INRUSH CURRENT

ZERO

INPUT VOLTAGE DERATING

WHAT IS PULSIV
OSMIUM TECHNOLOGY?

Pulsiv OSMIUM technology is a totally new method of AC-DC power conversion and the only suitable alternative to a Boost PFC.

Ideal for power supply designs up to 350W, it optimises Power Factor Correction to deliver a unique combination of features and benefits while reducing conversion losses and increasing efficiency across all load conditions.

Our patented and encrypted technology is securely delivered within a pre-programmed industry standard VQFN24 microcontroller and available from stock. All external components required to design a power supply also remain standard providing complete design flexibility.

Pulsiv OSMIUM technology redefines what’s possible in power electronics. With a breakthrough combination of features and benefits that solve critical challenges in power supply design, it marks the most transformative leap forward the industry has seen in over half a century — setting new standards for efficiency, performance, and sustainability.

DISCOVER THE FUTURE OF
POWER SUPPLY DESIGN

  • Pulsiv OSMIUM technology improves performance losses at low loads by up to 50% compared with Boost PFC alternatives. This enables our patented front-end switching method to deliver a world-leading efficiency of 99.5% peak and 97.5% average. This results in a significant reduction in energy waste and switching losses while overall average efficiency is improved.

  • By significantly improving efficiency at low loads, Pulsiv OSMIUM technology delivers a unique flat efficiency profile across all operating conditions. This directly reduces energy waste while helping to meet regulations and is perfectly suited to any product which spends the majority of its time at low or standby power levels.

  • Pulsiv OSMIUM technology extends the operating limits of industry standard Flyback converters to 250W while still passing the requirements for EMC and Line Current Harmonics. This enables the replacement of more expensive and complex LLC’s which reduces size, weight, and cost.

  • In almost all power supply designs, the bulk capacitors (wet electrolytics) must be rated at a minimum of 400V. Due to the unique and patented switching techniques of Pulsiv OSMIUM technology, these can be reduced to 160V or 200V maximum. This not only helps in reducing size, weight, and cost, but enables the use of dry polymer alternatives which improves reliability by extending lifetime to 25 years.

  • In the patented Pulsiv OSMIUM conversion method, the switch is located between the input and bulk capacitor while inline with the current. It is completely controlled by the Pulsiv OSMIUM microcontroller which determines when it’s turned on while also controlling the charging of the capacitor. As a result, if the switch is off (default), the current is zero, which completely eliminates the inrush current.

    By comparison, in a Boost PFC design, there is nothing to stop the current charging the bulk capacitor which requires the inrush current to be managed accordingly. This can require additional components and/or circuitry - adding size, weight, & cost.

  • Pulsiv OSMIUM technology has eliminated input voltage derating enabling power supplies to achieve full power across the entire universal input voltage range.

  • Pulsiv OSMIUM technology ensures critical system components operate at significantly lower temperatures when compared to conventional designs. This enables the use of smaller components, simplifies overall thermal management, and improves reliability.

Pulsiv OSMIUM technology is the only suitable alternative to a Boost PFC. Based on the structure of a buck converter, it intelligently regulates current rather than voltage while still meeting the regulatory requirements for power factor and harmonic currents.

Comparing a Boost PFC with Pulsiv OSMIUM technology in a 150W AC-DC power supply

Pre-Regulator Designs using
a Boost PFC		 Designs using
Pulsiv OSMIUM Technology
Advantage of using Pulsiv OSMIUM Technology
CONFIGURATION Series Parallel The magnetic losses typically generated by the Boost PFC inductor directly impacts efficiency at low loads. By replacing this series inductor with a capacitor in parallel, low load performance is significantly increased which enables Pulsiv OSMIUM technology deliver a flat efficiency profile across all load conditions.
POWER REGULATION Must process 100%
of the power		 Only needs to process 33% of the power By only needing to process 33% of the power, most of the energy bypasses the PFC stage directly into the DC-DC stage. This significantly improves critical aspects of the power supply design including efficiency, thermal management, component sizes, I²R losses, power density, lifetime, reliability, and overall cost.
INRUSH CURRENT Must be managed/reduced Eliminated Inrush current has always been managed during the design of any power supply which requires the use of current limiting components and/or complex circuitry. In a design using Pulsiv OSMIUM technology, the switch is located inline between the input and bulk capacitor. A Pulsiv OSMIUM microcontroller determines when it’s turned on while also controlling the charging of the capacitor. As a result, when the switch is off (default), the current is zero and therefore, no inrush current exists.
HIGH VOLTAGE DC ~ 400V ~ 120 - 325V Pulsiv OSMIUM technology not only delivers a lower HVDC, but a wider range compared to the 400V required in Boost PFC designs. While the lower step-down ratio improves efficiency, the converter will also automatically vary it’s switching frequency which provides significant advantages in complying with EMC regulations.
POWER LOSS AT 98% EFFICIENCY 3W 1W Pulsiv OSMIUM technology reduces power losses and subsequent heat generation by 67%. This directly improves the overall efficiency, reliability, and expected life of the power supply. It further reduces size/weight, increases power density, and helps meet regulatory standards (E.g. DOE Level VI, 80 PLUS Titanium, Energy Star etc) while also lowering energy waste.
SIZE AT 2W/cm³ 4.2 x 4.2 x 4.2cm
= 75cm³		 2.9 x 2.9 x 2.9cm
= 25cm³		 Pulsiv OSMIUM technology enables more compact power supplies to be developed - often a focus in the design of next generation products. A reduced volume further helps lower overall weight, and reduce manufacturing costs which can positively impact the final product price and/or profitability.
BULK CAPACITOR VOLTAGE RATING 400V 160V or 200V A lower rated capacitor voltage will reduce size, weight, and cost.
It also enables the use of dry polymer capacitors to extend lifetime to 25 years.
BULK CAPACITOR TYPE Wet Aluminium Electrolytic Wet Aluminium Electrolytic or
Dry Polymer (25 yrs life)		 Provides design flexibility by offering the option to upgrade to dry polymer capacitors.
This eliminates the risk of wet capacitors drying out and extends lifetime to 25 years.
DC-DC STAGE LLC Flyback Pulsiv OSMIUM technology can be used with industry standard Flyback converters. The lower step-down ratio from the HVDC reduces primary side inductance which enables the use of a smaller transformer size while increasing the overall efficiency of the power supply. It can extend the range of a Flyback to 250W while still passing the requirements for EMC and Line Current Harmonics. This helps to replace more expensive and complex LLC’s to reduce size, weight, and cost.

Want to learn more?

Pulsiv OSMIUM technology can be used with a variety of industry standard DC-DC converters including Flybacks, Forward Converters, & Asymmetric Half Bridge solutions. The theory and practical benefits of our patented technology are covered in a white paper which can be downloaded or viewed online.

HOW DO WE COMPARE TO A BOOST PFC?