Littelfuse, Inc. has added two series to its expanding power semiconductor portfolio: the MBR Series Schottky Barrier Rectifiers (Standard Schottky) are the latest devices based on silicon Schottky diode technology; the DUR Series Ultrafast Rectifier provides ultrafast switching speed. Both series are designed to meet the general requirements of commercial and industrial applications. They will […]
Power Components
Active Harmonic powerline Filters sport low distortion
Schaefer Inc. is proud to introduce a new series of Active Harmonic Filters and Advanced Display & Measurements Functionally. Three-wire and four-wire Active Harmonic Filter modules/systems that are designed to meet IEEE-519 (5% TDD) and Mil-Std-1399 (<3% THDi). The Power Balance & Kxxx Series family are scalable and offer a cost-effective solution for improving power […]
Metal-hybrid SMD power inductors sport super-low dc resistance
The Sumida CDMT40D20 Series Power Inductors are the first of a new family of components, designed to meet the demanding requirements of today’s portable devices and communications hubs. Exclusive metal-hybrid construction provides effective magnetic shielding with DC resistance lower than conventional SMD inductors. This can improve circuit battery life to a level comparable to larger […]
Data book covers inrush current limiters
TDK Corporation presents the fully revised Data Book for EPCOS NTC inrush current limiters (ICLs), which covers the extended product range of standard NTC ICLs. Also included in this range is the new P27 series with a lead spacing of 7.5 mm. These components have a disk thickness of ≤7 mm and are designed for […]
Top power electronics threads on EDABoard.com – February
Sine wave inverter voltage clipping – I’m in the process of building a sine wave inverter (MOSFET full-bridge and a low frequency transformer). I can’t manage to tune up the output filter (a series inductor in the transformer primary circuit and a capacitor across the secondary transformer). I have tried different inductor cores (E shape […]
Thermoelectric module for hi-rel applications
Global technology leader Laird has developed an advanced thermoelectric module (TEM) designed for high-reliability applications like polymerase chain reaction (PCR) thermal cycling, which require extended meantime between failure (MTBF). The polymerase chain reaction (PCR) is a biochemical technology that amplifies a single copy or a few strands of DNA across several orders of magnitude, generating […]
SMT current-sense transformers measure up to 30 A
TDK Corporation presents two new series of EPCOS SMT current sense transformers for power electronics. The various types in the B78417A* series are based on EP7 ferrite cores, have compact dimensions of just 10.6 mm x 12.2 mm x 11.0 mm and are designed to measure pulse currents of up to 20 A. The maximum […]
GaN components boost power density in supplies
by Eric Persson, Infineon Technologies To understand why gallium-nitride components shrink the size of power supplies, examine how they dissipate energy at high frequencies. Silicon power FETs have come a long way over the past 35 years. Modern high-voltage superjunction FETs have developed over the past 15 years to even exceed what was thought to […]
Multiple charging modes from a single amplifier
by Michael A. de Rooij, VP, Applications Engineering, Efficient Power Conversion Though there are two standards for charging appliances wirelessly, a single circuit can be devised to serve as a charging node for both of them. The good news about wireless charging techniques is that they do away with messy wiring that tethers phones and […]
Test instruments help tame power factor and signal integrity
by Simran Nanda, Keysight Technologies Harmonic analysis helps design electronics that will behave well on the power grid. Electronics that include switch-mode power supplies (SMPSs) and VFDs depend on non-linear components to minimize size and cost. This approach, however, forces designers to note the impact non-linear current flows have on the signal integrity of the input […]