Power Supplies

TDK has created inductors for automotive power-over-coax applications up to 1.6A. The three parts are an expansion of the 4.5 x 3.2 x 3.2mm ADL4532VK series, and are rated for use across -55 to +155°C. Power-over-coax requires data to be separated from power, and that filtering is what these inductors are intended for. The “series delivers high impedance across a ...

A question arose at Electronics Weekly after Rohm introduced an 8pad isolated for GaN transistors. In the BM6GD11BFJ-LB data sheet is a half-bridge application circuit (figure 28, right, slightly modified for clarity). It is a classic bootstrapped circuit (explained far below) for driving silicon mosfets, but the gates of GaN hemts are far fussier that Si mosfets: a little below ...

XP Power’s CCR range of ac-dc power supplies is rated for BF (body floating) medical use from 110W to 420W. With a 25.4mm profile, there are three difference sizes, where each device has three different power ratings depending on how it is cooled: by forced air, by base-plate conduction or by natural convection: CCR200 79x58mm, 200W fan, 170W conduction, 110W ...

Distributor Rutronik is stocking an isolated single-channel gate driver for GaN hemts that comes in a 4.9 x 6 x 1.65mm SOP-JW8 package. Made by Rohm and called BM6GD11BFJ-LB, they have “an isolation voltage of up to 2,500Vrms, a minimum input-output latency of 60ns and a minimum input pulse width of 65ns”, said Rutronik. “Under-voltage lock-out is integrated into the ...

Littelfuse is aiming at electric vehicle battery management systems with its latest transient voltage suppressor diodes. Specifically, the unidirectional diodes in the TPSMB-L series are for protecting analogue front-ends and IC in 14 to 20 cell  sub-assemblies. There are three parts, all rated for 600W 10/1,000μs pulses (0.01% duty cycle) and come in ~3.6 x 5.3mm DO-214AA (SMB) packaging: Reverse ...

Following its acquisition or Leco, Recom has launched a series of DIN rail power supplies for three-phase and dc input busses. Two-phase ac operation is also possible. Called the RACPRO1 range, it includes five parts: 240W (24Vout), 480W (24 or 48Vout) or 960W (24 or 48Vout), which are 43mm, 52mm or 80mm wide respectively. Update: The company introduced matching electronic ...

Toshiba Electronics has introduced a 60V 1A single-contact photo-relay in a 2.6 x 7mm 4pad SO4 package. Called TLP3640A, it can switch 60Vdc or 60Vac peak, with a typical on-resistance of 0.14Ω and maximum off-state leakage of 1µA. 100ms pulses of up to 3A can be carried. Operation is over -40 to +110°C, and de-rating starts at 25°C, dropping linearly ...

Recom has created a range of four-channel DIN rail electronic fuses with control and protection features. “The e-fuses distribute a 24V supply to four separately current limited load channels, each with a capacity of either 5A or 10A, depending on the module chosen,” said the company. “To avoid high in-rush currents, each load channel is switched on in succession with ...

Power Integrations added high-temperature motor drive optimisation to its MotorXpert brushless dc motor software suite. “In this version 3.0 release, we have added a two-phase modulation scheme, which is ideal for applications that work in high temperature environments such as hot-water circulation pumps,” said company marketing manager Cristian Ionescu-Catrina. “Version 3.0 also features a five-fold improvement to our waveform visualisation tool ...

EPC is specifically aiming at designers of humanoid robots with its EPC91104 7A 48V brushless dc motor driver evaluation board, built around GaN power transistors. Measuring 72 x 75mm and operating across 14 to 80V with peaks up to 20A, it implements only the power stage, needing a separate signal generator board to work, as well as heatsinking. The company ...