Power Supplies

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 ...

Texas Instruments has announced a series of GaN power switches for ac-dc and dc-dc converters that include an integrated driver, protection and current sense emulation. The parts, called LMG362x, differ in the size of the GaN hemt switch included. They are: LMG3622 650V120mΩ 8.5A LMG3624 650V 170mΩ 6A LMG3626 650V 270mΩ 3.6A “Using the LMG3622 only requires setting the desired ...

Vox Power has introduced a compact 600W modular ac-dc power supply with four output slots, and a choice of eight output modules that can be mixed and matched among them. NEVO+600S is the name, and it measures ~41 x 78 x 134mm (plus blade terminals), giving it a 5 x 3inch footprint. “Tailored for demanding industrial applications where size, power ...

Infineon has put 650V mosfet die from its CFD7A portfolio into a surface-mount package with “improved electrical performance over the well-known TO247 through-hole devices, thus enabling efficient energy utilisation in onboard chargers and dc-dc converters”, it said. ‘QDPAK TSC’ is a top-side-cooled package (see images) announced earlier this year and now registered with JEDEC – at the same time it ...

Infineon is putting 1,200V and 2,000V SiC mosfet half bridges into 62mm module packaging. “The package enables the use of SiC for mid-power applications from 250kW, where silicon reaches the limits of power density with IGBT technology,” according to the company. “Symmetrical internal package design provides identical switching conditions for the upper and lower switches.” For speedy replacement, the main ...

Toshiba has launched its first 30V n-channel common-drain dual mosfet, for controlling bi-directional power flow in USB-connected devices. The USB Power Delivery standard supports power levels from 5V 3A to 48V 5A, and allows swapping of the power supply and receiving side, requiring devices with USB charging to support bi-directional power. In developing a 30V common drain mosfet, called SSM10N961L, ...