Power Supplies

Rohm is aiming at motor drives operating on 24, 36 or 48V with n-channel mosfets rated at 40, 60, 100 or 150V to give some leeway for spikes and noise. There are two series with 13 devices all-told: nine in 5x6x1mm HSOP8 (below left) packaging called RS6xxxx, and four in 3x3x0.8mm HSMT8 packaging called RH6xxxx, with current ratings between 25A ...

Recom is aiming at railway use with a family of DIP24 isolated regulated dc-dc converters that will run from between 36 and 160Vdc. Surges up to 200V can be tolerated for 1s. “Dc-dc for rail applications typically operate from 72V, 96V, or 110VDC nominal input with dips and surges,” according to the company. There are 10W (RP10-RAW), 6W (RP06-RAW) and 3W ...

Analog Devices has created a pair of 6A buck-boost converters for automotive use. “MAX25239 and MAX25240 small-footprint 2V to 36V converters are the industry’s only 6A automotive buck-boost with integrated H-bridge switches,” according to distributor Farnell, which is stocking the parts. “They provide a fixed-output regulation voltage and an externally adjustable output voltage from 3V to 20V.” The ‘and’ in ...

To get the best out of GaN power transistors, which are far faster than silicon or silicon carbide transistors, microwave design techniques including RF simulation is essential, according to Cambridge start-up QPT. Final assembly, EMC screen partially lifted The alternative is to slow operation until the advantages of GaN fade away, or to risk durability as unseen ultra-fast overshoot and ...

At the Battery Show in Stuttgart, Interplex will introduce its current collection technology for the inside of electric vehicle batteries. “There are two important objectives that electric vehicle manufacturers, their battery suppliers and technology partners need to address: rising costs and sustainability,” said Interplex product director Randy Tan. “Our Cell-PLX interconnect platform automates the battery interconnection process. It also offers ...

P-Duke has announced ultra-wide input isolated 40W dc-dc converters for railway and industrial use. RED40-72xxxU converter will work over 14 – 160Vdc (11:1 range) and comes in a 2 x 1in (~25 x 50mm) footprint package. “Using just one dc-dc converter model for various supply voltages – 24, 28, 36, 48, 72, 96 or 110Vdc – in different regions avoids ...

Bel Power Solutions has announced a series of power supplies that offer Titanium level efficiency (up to 96%) for server, storage and networking. The TEC series is built to meet Intel’s Common Redundant Power Supplies (CRPS) standard, and the first models are rated to deliver 2.2, 2.4 or 2.6kW. 800W, and 1.3, 1.6 and 2kW versions will follow. The main output ...

EPC is aiming at eMobility, forklifts and high-power drones with a 150Arms brushless motor driver design using its GaN power transistors. Documents for EPC9186, as it will be known, are not available yet, but the company promises operation from 14V to 80V for “applications such as electric scooters, small electric vehicles and agricultural machinery” in addition to the items above. ...

Texas Instruments is aiming at electric vehicle traction inverters with a functional safety-compliant isolated gate driver for silicon carbide mosfets and IGBTs. Called UCC5880-Q1, it is in pre-production and the full data sheet has not yet been made public. One novel feature that has been revealed is that the device has two parallel high-side drivers and two parallel low-side drivers ...

Microchip has used silicon carbide power transistors in an electronic fuses demonstrator for electric vehicle batteries. “The demonstrator can detect and interrupt fault currents in microseconds, 100 – 500 times faster than traditional mechanical approaches,” according to the company. “The fast response substantially reduces peak short-circuit currents from tens of kilo-amps to hundreds of amps, which can prevent a fault ...