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, innovative, and patented 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.
GAMECHANGING BENEFITS IN
POWER SUPPLY DESIGN
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Our patented switching method eliminates low load losses typically associated with Boost PFC alternatives to deliver a front-end efficiency of up to 99.5%.
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With low load efficiency increased by up to 50%, our front-end designs delivers a four-point average efficiency of 97.5%.
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Pulsiv OSMIUM technology offers a unique flat efficiency profile across all load conditions, reducing energy waste and helping to meet regulations. This is perfectly suited to any product which spends the majority of its time at low or standby power levels.
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Pulsiv OSMIUM technology can extend the limits of a Flyback to 250W while still meeting all necessary EMC and Line Current Harmonics. This enables more expensive LLC’s to be replaced and reduce size, weight, and cost.
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Conventional Boost PFC designs require the bulk capacitors to be rated at 400V. By comparison, Pulsiv OSMIUM technology only requires the use of 200V rated capacitors. In addition to reducing size, weight, and cost, it also enables them to be replaced with dry polymer alternatives to extend lifetime to 25 years.
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In the Pulsiv OSMIUM switching architecture, the switch is located between the input and bulk capacitor and 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 eliminates the inrush current. 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.
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Pulsiv OSMIUM technology has eliminated input voltage derating enabling power supplies to achieve full power across the entire universal input voltage range.
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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 | A parallel configuration eliminates the losses caused by the Boost PFC inductor. It further improves efficiency at low loads and delivers 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 1/3 of the power, the remaining 2/3 can pass through at 100% efficiency. This reduces conversion losses and overall size while making the design more cost effective. |
INRUSH CURRENT | Must be managed/reduced | Eliminated | Removes the need for inrush current limiting circuitry/components. This helps to reduce size, lower cost, and eliminate issues caused by sudden power outages. |
HIGH VOLTAGE DC | ~400V | ~120-325V | In addition to a lower step-down ratio that improves converter efficiency, Pulsiv OSMIUM technology provides a wider HVDC range compared to a Boost PFC design. The converter will automatically vary it’s switching frequency which provides significant advantages in complying with EMC regulations. | POWER LOSS AT 98% EFFICIENCY | 3W | 1W | TBC | SIZE AT 2W/cm³ | 4.2cm x 4.2cm x 4.2cm = 75cm³ | 2.9cm x 2.9cm x 2.9cm = 25cm³ | TBC | 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 | Using a Flyback with a Boost PFC in most cases would not be efficient enough to meet minimum regulations thereby forcing engineers to opt for a more expensive LLC solution. Pulsiv OSMIUM technology can be used with carefully designed Flybacks to replace LLC alternatives, improve efficiency, and lower 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.