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 ...
NCV30161 is a dc-dc converter intended to drive leds with a continuous current – albeit with a superimposed triangle wave. It is a buck converter – slightly up-side-down because it has its switch on the negative side. There is no output capacitor, and the inductor and the leds are in series, so they both get the same current at all ...
Recom has launched a series of DIN-rail ac-dc power supplies with 90 to 264Vac inputs and 120W, 240W or 480W outputs – and it has some new mini buck dc-dc module evaluation boards. Efficiency of the ac-dc DIN modules is up to 93.5%. All measure 123.4mm deep by 123.6mm high, and width is 30mm, 40mm or 56mm respectivley. The models are: ...
Alpha and Omega Semiconductor is aiming at Meteor Lake and Arrow Lake notebooks with a multi-phase dc-dc converter controller that meets Intel IMVP 8, 9, 9.1, and 9.2 specifications. AOZ71137QI is a three rail seven-phase controller for CPUs that has: up to four phases for the core voltage (‘IA domain’), up to two phases for graphics (‘GT domain’) and one ...
Recom has created a chassis-mount isolated dc-dc converter for nominal battery voltages from 24 to 90V. Called RMOD360-UW, it can deliver full power continuously with inputs between 27 and 106V, as well as 240W down to 18V, and it will deliver 360W from up to 126V for 10 minutes. Output is 24.5Vdc. A 300W relative, RMOD300-UW, comes in three versions ...
Samsung is aiming at electric vehicle on-board chargers with a 1,000v 22nF multi-layer ceramic capacitor. CL32C223JIV1PN# (yes, there is a # in the part number) is aimed at CLLC resonant power supply topologies and is constructed with a COG dielectric. Operation is across -55 to +125°C and it has a ±5% tolerance. Packaging is a 2.5mm tall 3.2 x 2.5mm ...
Instantaneous power demand on large processor ICs is getting crazy, with a thousand amps flowing at times. Pondering future system-in-package designs that will consume around 1kW, Intel has used a 16nm finfet cmos process to created a prototype 52 phase buck converter that can be built into such ICs, which it revealed at the International Solid-State Circuit Conference in San ...
EPC has created a GaN transistor dc-dc converter demo board that converts an input between 36 and 60V to a regulated 13V 16A output. Called EPC9195, it is a synchronous buck converter built around a pair of 2.5 x 1.5mm EPC2619 GaN hemts, and an LTC7891 controller IC from Analogue Devices. “48V input is getting popular due to USB PD ...
Power supply company Pulsiv has developed a graphical technique – a nomogram – to determine critical transformer parameters for fly-back converters operating in discontinuous conduction mode. “This intuitive tool can replace more complex equation-based methods, providing a fast and accurate visual process for identifying primary side inductance and minimum duty cycle,” according to the company. How to use it: Find ...
Diodes has is aiming at automotive LED strings with a boost and SEPIC (single-ended primary-inductance converter) controller, that can also be wired as a voltage regulator. Called AL8853AQ, it is qualified to AEC-Q100 and implements current-mode and fixed-frequency (400khz) PWM control. Slope-compensation is included to prevent sub-harmonic oscillation at duty cycles >50%. The IC requires an external n-channel power switching ...
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