Pulse Electronics Corporation, (San Diego, CA) is a leading electronic component manufacturer. Their new integrated chokes are a special breed, combining common mode and differential mode type into a single mode choke. This new choke integrates the two magnetic components into one, facilitating huge reduction in power loss across the EMI filter part of the power supply. This is made possible by a decrease in resistance of the winding. In addition, Pulse Electronics has considerably reduced the overall space required for the choke. The new integrated choke, the PA4040 from Pulse Electronics, is small with dimensions of 31 x 24.9 mm. The considerable reduction in footprint is to the extent of about 40%, when compared to the combined footprints of equivalent CM and DM components.
The reduced direct current resistance is between 32 and 245 ohms, which results in an overall reduction in power loss. The PA4040 integrated choke offers a number of features. Main among them is it meets a host of safety requirements of several agencies such as UL/CSA/VDE, by allowing 1500 Vrms hi-pot and 3.0 mm in safety distance of creepage and clearance. Further, it may be utilized equally in AC/DC or DC/AC power supplies as it uses a common mode filter and differential mode filter. The main feature is that the current through the filter is less than 3.5 Arms.
The PA4040 from Pulse Electronics finds applications in computing, Datacom, LED lighting drives, solar micro inverters, motor drives and controls. Using PA4040 integrated chokes allows the operational efficiency to go up by 30%. Additionally, because one component replaces two, there is an overall saving in manufacturing cost, time and an increase in throughput. With a 20% saving in cost, PA4040 brings about multiple benefits to the user by way of optimizing performance. Geoff Wildman, product line manager (Power), Pulse Electronics elaborated, “Integrated chokes have been available before, but mainly for custom applications.” He further added, “This catalog release allows for a wider range of customers to enjoy the benefits of integrating the CM and DM chokes.”
A common mode choke blocks or diverts common mode noise in the power supply, while a differential mode choke blocks or diverts the differential mode noise. The PA4040 integrated choke design performs both the functions in a single component and presents a very welcome development with regard to increase in power density, improvement in efficiency and reduction in overall cost. With the wide applications possible, integrated chokes present an exciting development.
Pulse Electronics, the electronic component manufacturer, also provides technical solutions to customers on their specific needs. The company is a pioneer in antennas, magnetics and connectors. At the same time, it has mastered the art of meeting high volume requirements of the customers. It constantly upgrades itself with respect to technical developments and existing customer feedback. The PA4040 integrated choke is engineered to give the customer higher safety along with optimum performance at an affordable cost. Customers acknowledge that the integrated chokes create a new yardstick in efficiency and cost. Pulse Electronics has taken the lead in this respect over others in the field.
