Pulse Introduces New Low Loss, High Saturation SMT Power Inductor
Pulse, a Technitrol company, introduced the new PG0702NL series of flat-coil surface mount (SMT) power inductors. These inductors have a low DCR of 0.89 to 5.9mΩ and a tight tolerance of plus or minus 6% for higher efficiency. Inductance values range from 0.40 to 3.0µH with a peak saturation of 15 to 45A. Operating frequency is 100kHz to 1MHz at an operating temperature of minus 40 to 130°C with no thermal derating. These inductors are used to store energy and serve as filters in voltage regulator modules (VRMs) used in notebooks, desktop computers, workstations, and servers as well as dc-dc applications, point-of-load (POL) converters, and other high-density, high-power, high-ambient temperature applications.
Pulse’s PG0702NL series uses a ferrite core material which has one tenth the core loss of iron powder or iron alloy core materials. The lower core loss of the ferrite material is optimized at frequencies above 500 kHz. The decrease in core loss is said to significantly increase system efficiency 5 to 10%. Because the ferrite material is immune to thermal aging, these inductors are said to be reliable at higher operating temperatures.
The PG0702NL series has a self-leaded, round, wire coil which is said to lower the overall cost of the finished product, providing a lower tolerance of the direct current resistance (DCR) to plus or minus 6%. The tight DCR tolerance improves current sensing control and the power supply’s regulation and transient response.
Pulse’s PG0702NL inductors have an industry standard 4040 footprint of 10.8 x 9.5 x 8mm and incorporate a three-pin design for improved mechanical stability. An unconnected third pin at the back of the inductor distributes the part’s weight and balance between the three terminals during the mechanical vibration.
Pulse’s PG0702NL Series is RoHS compliant and meets standard EIA481 requirements. Lead time is four to six weeks.
