Power Supplies

Bourns is offering IEC-grade surge protection for ac or dc power rails with four DIN rail mount device series. 1270 series AC surge protection to IEC/EN 61643-11 Class I + Class II / T1+T2 1280 series the same, plus a thermal disconnector “that eliminates the need for up-stream over-current protection”, said Bourns. 1430 series DC surge protection to IEC/EN 61643-31 ...

Power factor correction with CCM (continuous conduction mode) boost converters is where ITG Electronics is aiming its latest choke family. Specifically, the series is for converters operating at between 100 and 200kHz, and up to 3.3kW. There are four parts, from 90 to 285uH, all with a 43 x 35mm footprint and standing 38mm above the PCB. They can operate ...

TDK has added 20A 500W models to its i7A range of non-isolated 1/16 brick dc-dc buck converters. All of the 20A output models, called i7A48020A033V, can operate from inputs across 28 to 60V and deliver an adjustable 3.3 to 32V – output voltage range is restricted at some input voltages, and set by an external resistor. Efficiency is up to ...

Infineon is aiming to drive motors up to 4kW with a series of integrated three-phase IGBT motor drivers. There are three: IM12B10CC1 800V 10A 2.2kW IM12B15CC1 800V 15A 3kW IM12B20EC1 800V 20A 4kW Each comes in the same 36 x 23mm DIP package and includes six 1,200V IGBTs, six anti-parallel diodes, and a protected level-shifting gate driver compatible with logic-level ...

Nexperia has introduced 80 and 100V mosfets in 5 x 6 and 8 x 8mm footprint LFPAK packaging with Rds(on) ranging from 1.8 to 15mΩ, or 2.07mΩ upwards for the 100V parts. “Many mosfet manufacturers focus on achieving high efficiency through low Qg(total) and low Qgd, when benchmarking the switching performance of their devices against alternative offerings,” said the company. ...

Infineon Technologies is to integrate 600 and 700V GaN power hemts alongside gate driver chips inside single packages, in 5 x 6mm or 6 x 8mm SMD packages. IGI70NxxxA2xS is to be a 700V range that combines a single GaN transistor with a single-channel driver in 5 x 6mm PQFN with with 140 to 500mΩ options (IGI70NxxxA2PS), or 6 x ...

Nexperia has created a pair of 17mΩ 13.5A resettable electronic fuses for 12V hot-swap applications in 3 x 3 x 0.75mm DFN3030-10 (SOT8037-1) packaging. NPS3102A and NPS3102B operate with 9 to 18V on the input (21V abs. max) and can limit output current to anywhere between 2 and 13.5A range, programmed using a resistor – the voltage across which can ...

Magnix has designed a range of batteries for electric aviation. The first product of the line, Samson300, is focussed on maximum energy density, according to the company, achieving 300Wh/kg. A cycle life of over 1,000 full-depth discharge cycles is claimed. “Patented safety technologies include cell level protections from thermal runaway and ability to store batteries for long periods at zero charge,” ...

XP Power has introduced a range PCB-mount PSUs that will run from 85 to 528Vac. There are 5W (EHL05) and 20W (EHL20) types, all single output, with 3.3, 5, 9, 12, 15, 24 or 48Vdc outputs depending on version. There is a choice of open-frame or encapsulated (see photo) packaging, and efficiency is typically between 82 and 88% – 3.3V ...

Texas Instruments has used integrated moulded magnetics to shrink the size of six multi-amp dc-dc converters – five buck types and one boost. The shrunk versions are branded ‘MagPack’ by the company, which will not reveal details of the construction except to say that the control IC and inductor coil are stacked before magnetic material for the inductor is over-moulded ...