High voltage input cascaded input converter – We have to do a non-isolated SMPS for vin=120v to 400v, and vout = 100v, pout=300w. There is a “known” way to do this involving two cascaded synchronous buck stages. Do you know more detail of this “known” method? Read more Designing a charge controller for hybrid system – I […]
MOSFETS
Teardown: 60-W-equivalent LED bulbs
by LELAND TESCHLER, Executive Editor Surprise: A look inside five LED bulbs designed to replace 60-W incandescents reveals design regimes ranging from dead simple to startlingly sophisticated. The average consumer might think that when it comes to light bulbs, one is about the same as another. This view might have been accurate back when every […]
Better converter efficiency with eGaN FETs
by Alex Lidow and David Reusch, Efficient Power Conversion Corp. Gallium-nitride FET technology has improved markedly in the past five years. Power converters based on GaN FETs are living up to the promise of low power losses at an economical price. Enhancement-mode gallium-nitride (eGaN) FETs can switch at speeds ten times faster than the best […]
TI’s smart diode controller realizes the power of zero
Industry’s first zero quiescent current solution for reverse polarity protection in industrial power tool and automotive applications Texas Instruments (TI) today introduced the industry’s first smart diode controller with zero quiescent current that provides better efficiency versus Schottky diodes and p-channel MOSFETs. The LM74610-Q1 provides lower power consumption and heat in a compact solution size, […]
Driving LEDs with SiC MOSFETs
by ADAM BARKLEY, SiC Power Device Application Engineer, Wolfspeed, a Cree Company and VIPINDAS PALA, Research Scientist Wolfspeed, a Cree Company Engineers increasingly see the logic of silicon-carbide MOSFETs for handling a lot of electrical power, but new SiC devices also make sense for high-voltage switching. The benefits of silicon-carbide power MOSFETs are becoming widely […]
Top power electronics threads on EDAboard.com – October
Industrial grade robust inverter build – I have done a lot of research online about IGBTs, gate drivers, blown up many IR2110s, studied PCB layout considerations, OC/SC protection, current sensors and so on but none of my designs has ever lasted for long when loaded by an actual motor. The waveforms were perfect, but smoke was […]
Using PowerPhase MOSFETs in Synchronous Buck VR Applications
Most of voltage regulators are still using discrete solutions like SO8-FL 5 x 6 mm2 package. With advancement of Si technology and packaging, MOSFET can achieve a switching transition of less than 10nS, which is equivalent to di/dt of more than 1A/nS New PowerPhase packages enable faster switching by minimizing package parasitic inductances. While the […]
Surface-mount SiC MOSFET for auxiliary power circuits
Wolfspeed, A Cree Company, continues its innovation in silicon carbide (SiC) power device technology and packaging with the introduction of the industry’s first 1700V SiC MOSFET offered in an optimized surface mount package designed for commercial use in auxiliary power supplies in high voltage power inverter systems. The higher blocking voltage enables design engineers to […]
Hot Swap controller with dual MOSFET drive enables 100-A designs
Linear Technology Corporation introduces the LTC4282, an energy monitoring Hot Swap controller with dual MOSFET drive to enable 100A and higher current board designs. The LTC4282 ensures safe board insertion and removal from live 2.9V to 33V backplanes by controlling external N-channel MOSFETs to gently power up capacitors, avoiding sparks, connector damage and system glitches. […]
Top power electronics threads on EDAboard.com – September
Issues with TPS2811 MOSFET driver for IR530 in buck SMPS design – I’m trying to build an SMPS but want to simulate it on Multisim first before I buy all the components. The buck has a 6.3V dc input and will have a 5V dc output at 2 amps. I’ve designed a buck converter and it seems […]
