WHAT’S NEW
Digital converter does it all BRIGHT IDEAS ON LIGHTING
Toshiba Electronics Europe (TEE) has launched an integrated digital DC-DC step- down converter designed to save space, improve efficiency and increase design flexibility in point-of- load (PoL) power designs. The new TC7750FTG programmable voltage
regulator combines a PWMdriver and FETs with controller and feedback loop in a single packagemeasuring four by fourmillimetres.
Offering communication with a host controller via the PMBus, the POLA-compliant
facilitates advanced diagnostics and protection features and improved power management functions. PMBus communication can also simplify product development by allowing key parameters to be set via a PC rather than changing external components. It can also provide automatic performance optimisation to take account of temperature, load regulation, voltage changes and other environmental variations during product operation.
The device will work with a 2.7 to 5.5V input range and can operate at three
switching frequencies: 750kHz, 1.5MHz and 3MHz.Maximumoutput current is rated at 3.0A and output voltages range from0.6V to VIN- 0.3V. Since this integrated solution requires few external components, board space and current consumption are lower than discrete alternatives.
www.toshiba-components.com High temp mosfets move fast
Cissoid has expanded its Planet family of high temperature transistors and switches with Earth, a high temperature 80V N-channel power mosfet transistor
guaranteed for operation from-55°C to 225°C. The new device, which is available in two versions, rated for five and 10Amaximum drain current joins Venus, a PMOS, Saturn, a 40V NMOS and
Mercury, a small signal transistor. The Earth family is designed to support any systemrequiring
reliable power control in a harsh environment includingmotor drivers, DC-DC converters, SMPS and inverters. Both versions are claimed to improve cost, reliability and weight while eliminating the need for fluid cooling in applications such as industrial process control, car battery chargers and aircraft actuators.
Earthmosfets are available immediately for sampling and
evaluation in TO-254metal can packaging. Pricing starts at €214.15 up to 200 units.
www.cissoid.com IN SYNCHWITH DEMAND
Premo enhances its receiver antennas range with the new RCA-ROD series of radio clock antennas designed for synchronised clocks and ripple control. Applications include tariff switching, public lighting control and smartmetering.
The RCA-ROD antenna can be set and tuned in
different frequencies from40 to 139kHz for clock applications and power control andmanagement applications. There are several clock signal and long wave transmitters for the power control to cover different zones. These long wave transmitters use FSK
modulation with frequency precision of ±107Hz and signal speed of 200Bd.
All Premo antennas are tuned during
manufacture to the required operating frequency, with a bandwidth around ±500Hz. Ferrite core capacitors are said to be stable in temperature with low noise factor, so the antenna maintains its parameters between -40 and 70°C.
www.grupopremo.com July 2010 | 45
MSC Vertriebs introduces the three watt Everlight Shuen SMD LED family with a typical viewing angle of 120deg and a luminous flux up to 170lmwhen driving at 700mA. Its slimpackage makes it ideal for advanced lighting applications including general illumination, flash, spot, signal, industrial and commercial lighting.
The thermal pad is electrically isolated, which is
said to provide good thermal and electrical characteristics. The Shuen series also boasts flexibility, with a colour rendering index (CRI) of 75 or 90, depending on the lighting application.
All Everlight LEDs offer ESD protection up to 8kV,
moisture sensitivity Level 1 andmatch ANSI binning.
www.msc-ge.com
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