Author Archives: steve bush

APEC 2021: Critical conduction mode totem pole PFC controller

ON Semiconductor is introducing a critical conduction mode ‘bridge-less’ totem-pole PFC (power factor correction) controller, claiming it to be industry’s first dedicated IC. Bridge-less in this case is a misnomer. It indicates no front-end diode bridge (saving the diode drops), which is instead replaced with a bridge of four transistors- two in a totem-pole operating at ...

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UK made: pancake motor rescues weather balloon tracker

Printed Motor Works of Hampshire is making a replacement servo motor for a weather balloon tracker made by South African company InterMet, after the original became unobtainable. “The discontinued motor had a very low profile which enabled it to fit within the base plate of the antenna’s turntable mount,” according to PMW. “It also had ...

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350W medical PSU peaks at 1kW

TDK-Lambda has introduced a series of ac-dc mains power supplies rated at 350W convection, 500W with forced air and 1kW peak. Called CUS350MP, the PSUs have medical and industrial safety certifications. Input can vary across 85 to 265Vac (with leakage current <300µA). Four output voltages are available: 24, 30, 36 and 48V, plus a 5V 300mA isolated stand-by voltage – ...

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UK made: VPX video frame grabber and streamer

Advanced Micro Peripherals of Cambridge has released two 3U video boards for VPX backplanes. XStream-VPX is a 40ms latency H.264/H.265 video streamer with eight PAL/NTSC inputs, one HDMI/DVI, RS343/RGB/STANAG, and one HD-SDI input AVC-VPX (pictured) is a multi-channel frame grabber with eight PAL/NTSC inputs, eight raw digital video streams to VPX host and live video ...

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ICs push industrial Ethernet over 1.7km of cable

ADI has introduced a pair of industrial 10BASE-T1L Ethernet (IEEE 802.3cg) ICs which can operate over 1.7km of single twisted pair with 10Mbit/s 1Vp-p or 2.4Vp-p signalling. “By providing long-reach industrial Ethernet solutions that adhere to the 10BASE-T1L Ethernet standard, we’re making it possible for our customers to achieve reliable communications over much longer distances, ...

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Logic level 1.5mΩ 30V mosfet has low gate charge

Vishay has introduced a 30V n-channel mosfet with an on-resistance of 1.5mΩ (typ) at 4.5Vgate while achieving a 29.8mΩnC gate figure-of-merit (FoM). “The SiSS52DN’s FoM represents a 29% improvement over previous-generation devices, which translates into reduced conduction and switching losses to save energy in power conversion applications,” according to New Yorker Electronics, which is stocking ...

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Structure thins silicon capacitors to

Murata has announced a new generation silicon capacitor process which builds devices less than 40µm thick and up to 1.3µF/mm2. Made using semiconductor lithography techniques, the capacitors are intended for high-end applications such as in-package power supply decoupling for mobiles and high-performance computing. The main change in the process is a different 3D structure with ...

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1.7kV SiC ac-dc converter ICs now in surface mount

Rohm has introduced surface-mount versions of its ac-dc converter ICs that include a 1,700V silicon carbide mosfet – opting for the 10.2 x 4.4 x 15.5mm TO 263-7L package, which can be automatically mounted in production. Called BM2SC12xFP2-LBZ, the series (table below) implements a quasi-resonant topology and is aimed at industrial auxiliary power supplies – for example ...

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UK made: 1U modular RF distribution chassis for satcomms

ETL has introduced a 1U version of its Genus-brand modular RF distribution chassis for ground-segment satcomms, adding to its 2U, 3U and 4U version. GNS-101-1U can accept up to 17 of the company’s RF modules, mixed and matched from BUC/LNB power supply’s, frequency converters, matrices, RF-over-fibre, redundancy switches or test loop translators. It has dual-redundant hot-swappable power ...

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PIC32MZ added to interchangeable MCU development boards

MikroElektronika, has introduced a SiBrain interchangeable board MCU board for Microchip’s PIC32MZ1024EFF144 microcontroller, giving access to its 144 pins, 1Mbyte flash memory and 262kbyte of ram. The core in the processor is a 32bit 200MHz (330DMIPS) Warrior M-class from MIPS. The Serbian company is the one behind ‘Click board’ interchangeable peripheral boards which have a standard footprint and ...

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