Author Archives: steve bush

Novel mems devices get investment

Novel mems technology firm ​Integra Devices has completed a $6 million series-A funding. The Californian company has taken packaging technology, rather than silicon lithography, as the base on which it builds micromachines – created from over 15 years of research and over $20m in funding at the University of California, Irvine, according to the firm. For example, ...

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PCIM: Plastic 100A 1.2kV 3ph IGBT module with integrated drivers

Mitsubishi launched three high current 1.2kV three phase IGBT modules at PCIM in Nuremberg, in transfer-moulded packages. Branded ‘Large DIPIPM+’, the modules include high and low-side drive ICs. “Of special note, one of the modules achieves a world’s first high-density output of 100A/1.200V in its transfer-mould package,” said the firm, with the caveat that this is ...

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PCIM: PCB-mount isolated current transducer for ac and dc up to 200A

At PCIM this week, LEM announced a family of PCB-mount transducers for isolated dc, ac and pulsed current measurement of currents from 100A to 200A nominal. The LZSR family, as it will be known, consists of: LZSR 100-P (100Arms nominal) LZSR 150-P (150Arms nominal, 450A peak) LZSR 200-P (200A) Peak current is up to 3 ...

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PCIM: UnitedSiC adds 650V SiC power transistors

UnitedSiC has added seven TO220-3L and D2PAK-3L device/package combinations to its UJ3C (general purpose) and UF3C (hard switched) series of 650V SiC FETs. The firm uses cascode pairs within its devices, with a Silicon carbide JFET paired with a custom-developed silicon mosfets – the latter providing well-supported gate characteristics to the devices. “Unique to the UJ3C ...

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PCIM: 175°C linear reg and logic gates for automotive

Cissoid has announced an adjustable linear regulator and logic gates that operate with junction temperature from -55°C up to 175°C – exceeding AEC-Q100 Grade 0 standard, the Belgian high-rel chip maker pointed out. Members of the firm’s new CXT series of automotive grade components, all with the same temperature range, the first is CXT-STA4919, a 50mA adjustable linear ...

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PCIM: Rohm’s 1.2kV IGBTs drop only 1.7V

Rohm’s automotive grade 1,200V IGBTs are aimed at inverters used in electronic compressors and for switching positive temperature coefficient (PTC) heaters. RGS series parts are AEC-Q101-compliant and come in 1.2kV and 650V variants. “Increasing the number of electric vehicles advances the need for electric compressors often driven with IGBT’s,” according to Rohm, and “the demand ...

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Aceinna offers AMR current sensors for power

Massachusetts-based Aceinna has a range of current sensor chips based anisotropic magnetoresistive (AMR) technology, using an insulating substrate with 4.8kV isolation. Called MCA1101, the chips measure bi-directional current, both ac and dc signals, with 1.5MHz bandwidth and 300ns rise-time. Current input and output pins (four pins each, see diagram) are on the same side of the ...

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PCIM: 40V 0.7mΩ mosfet in 8x8mm from Nexperia

Nexperia is claiming to have squeezed a 40V mosfet with 0.7mΩ Rds(on) into 8 x 8mm, using its LFPAK88 package and its latest (Trench9) silicon – intending to displace D²PAK and D²PAK-7 devices – saving 60% of footprint and with a 64% lower profile. “Unlike packages where performance is often limited by internal bond wires, ...

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PCIM: ST’s power tool motor control MCU has built-in mosfet drivers

STMicroelectronics has expanded its STSPIN32 programmable motor controller family with a system-in-package brushless-dc (BLDC) motor battery-operated power tools. STSPIN32F0B as it will be known integrates an op-amp for current sensing through a single resistor in the negative return wire (diagram below. On-board is a 48MHz STM32F031x6 MCU (Arm Cortex-M0 core) capable of running a six-step ...

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PCIM: LEM’s digital integrator for Rogowski coils

LEM has introduced a digital signal processor for Rogowski coil outputs at PCIM in Nuremberg. Rogowski coils are handy for current measurement because they simply wrap around the conductor carrying that current. However, they produce an output voltage proportional to the derivative of the primary current they are sensing, and therefore need an electrical integrator to ...

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