Power Supplies

Allegro MicroSystems has created an isolated gate driver IC for GaN power transistors that has no need for high-side bootstrapping nor the provision of a secondary side drive supply voltage. Instead, a dc-dc converter within AHV85111 produces secondary-side dc power rails – one positive and one negative – to provide gate drive power from a 12V supply (10.8 – 13.2V) ...

AMD has introduced a motor driver starter kit for its Kria K24 system-on-module – which is built around a Zynq UltraScale+ IC and measures 60 x 42 x 11mm. The kit, called KD240 drives starter kit, includes the module, a carrier card and a heat sink. Included is 2Gbyte (2chan x 256Mbit x 16bit/chan) of LPDDR4, and a 512Mbit QSPI ...

Würth Elektronik has introduced two families of surface-mount multi-channel galvanic isolators for digital signals. Devices in the WPME-CDIP family have four 100Mbit/s isolated channels and a built-in dc-dc converter that provides isolated power from one side to the other. Different versions have different combinations of digital isolator directions: all from input to output, three in that direction and one returning, ...

Vishay has introduced four ultra-fast 200V rectifier diodes: VS-1EAH02xM3 (1A) VS-2EAH02xM3 (2A), VS-3EAH02xM3 (3A) VS-5EAH02xM3 (5A) “Their low-profile DFN3820A housings provide a space-saving solution with high efficiency, predestined for commercial, industrial and especially automotive applications – they are each available as Vishay Automotive Grade, AEC-Q101 qualified versions,” according to distributor Rutronik, which is stocking the parts. Taking the 3A VS-3EAH02HM3 ...

Epishine, the Swedish indoor solar power specialist, and Nichicon, the Japanese capacitor manufacturer, have come up with a self-charging battery concept. The idea is to combine Epishine’s  solar cells and Nichicon’s  LTO-batteries in an integrated solderless autonomous power product which is an alternative  to disposable and re-chargeable batteries, reducing time-to-market and cutting down on product development costs. “We’ve created a ...

E-peas has created an energy harvesting IC specifically for hand-held remote controls and wireless keyboards equipped with small solar cells. A cold start is possible from an input voltage as low as 275mV if 5µW of power is available. There are two versions, which optimise loading of the photovoltaic source in two different ways to get the best out of ...

Central Semiconductor has announced five 650V n-channel super-junction mosfets in TO-220FP packaging. They are: CDMSJ2204.7-650 (4.7A) CDMSJ2207.3-650 (7.3A) CDMSJ22010-650 (10A) CDMSJ22013.8-650 (13.8A) CDMSJ22029-650 (29A) “These super-junction mosfets extend efficiency for a variety of end applications,” according to Central marketing director Tom Donofrio. Additionally, “these pair well with Central’s fast rectifiers for power factor correction”.

Nisshinbo Micro Devices  has launched a Voltage Tracker for automotive applications including ECU, body  equipment and power supply for off-board sensors. Voltage Trackers are useful as a buffer power supply, where a reference supply voltage is replicated with high tracking accuracy and the safety level of the electronic system is generally increased. The NJW4250 voltage tracker operates up to an ...

A compact wireless data acquisition system can investigate, monitor and optimise electric rotor motor operation, say Rolf Spellmeyer and Diego Llopis. In modern electric vehicles, different types of electric motors are available. Automobile manufacturers may select asynchronous or synchronous motors, and in some cases, they combine both motor types in one vehicle. In this context, synchronous motors are considered more ...

Toshiba is in volume production of a photovoltaic output photocoupler with an enhanced open-circuit voltage suitable for gating high-voltage power MOSFETs commonly used in solid-state relays (SSRs). The TLX9910 photocoupler is primarily intended for use within SSR applications in automotive. However, it can equally be used in industrial applications, such as renewable energy. This combination enables high-voltage, high-current switching, which ...