Power Electronics

New Products

Surge Suppressors

PowerSure Surge II surge suppressors deliver cost-effective computer-grade power protection for desktop computers and their peripherals, audio visual systems, phone systems and cable modems. Designed for professional desktop and network environments, they deliver a high degree of protection with integrated transient voltage surge suppression (TVSS) circuitry to prevent spikes, surges and other anomalies from damaging sensitive electronics through power or data lines.
Liebert Corp., Columbus, Ohio
Circle 309

Inverter in Kit Form

The 8mD Class inverter supplied in kit form is low-profile (8-mm high) with up to 5 W of output power and is designed for users of 1- or 2-lamp LCD modules. It gives display designers the flexibility of obtaining the transformer and whatever other magnetic components they need (i.e., the choke, input cap and output capacitor) and putting them on their own printed circuit board, so they purchase only the components required.
Endicott Research Group Inc., Endicott, N.Y.
Circle 304

Analog Switch

The NLAS2066 ultrasmall analog switch delivers the industry's first overvoltage tolerant switch. It permits input lines, output lines and USB lines to be shared on the same connector pins, thus reducing the size and lowering the costs for handheld products such as smart cell phones, PDAs, digital still cameras, digital video cameras, and MP3 players.
ON Semiconductor, Phoenix
Circle 305

Ceramic Semiconductors

CeraDiodes are transient voltage suppressors (TVS) constructed of multilayer-structured ceramic oxides. They include a variety of single-element CeraDiodes in 0603 size — one-third the size of most TVS diode packages. A series of 4-element arrays in 1206 size and a single element 0402 series are under development, with prototypes available. Their spectrum spans dc working voltage 5.6 V to 22 V and capacitance values from 2 pF to 470 pF. They provide bidirectional protection, response times of less than 0.5 ns, low leakage current and temperature stability to 85°C.
EPCOS, Iselin, N.J.
Circle 306

Point Level Sensors

The NR60 heavy-duty point level sensors are designed for liquid level sensing in manufacturing process controls or OEM applications. Offering durability in harsh environments through their brass housing and solid-state electronics, they can withstand 50-g (11-ms) mechanical shock, 25-g vibration (2700 Hz to 5000 Hz), immersion (protection up to IP69), and temperatures to 125°C (257°F)
E-T-A Circuit Breakers, Chicago
Circle 314

Data Bus Transformer

Offering minimum input impedance of 3000 Ω or 7200 Ω over the temperature range of -55°C to +130°C, the 4260-1646 and 4260-1647 Series data bus interface transformers support high-speed data transmission requirements in many mission-critical industrial and military applications. Designed to meet Mil-Std-1553 A/B and MAC AIR specifications A-3818, A-5690, A-5232 and A-4905, the 4260-1646 and 4260-1647 Series also meet MIL-PRF-21038, Grade 7, Class S, and are DESC approved as part numbers 82030-01 through -10.
Datatronic Distribution Inc., Romoland, Calif.
Circle 310

Recovery Diodes

The DBA Series of fast- and soft-recovery diodes uses the SOT-227 package, available in a range of current capacities of 2 × 50 A, 2 × 100 A and voltage capacities of 400 V and 600 V. Designed for applications requiring fast switching (trr=90 ns) and soft wave shape to reduce or eliminate the need for snubber components, they feature low forward-voltage drop (VF=1.05 V) and a low thermal impedance (Rth(j-c)=0.45°C/W). Operating junction temperature is -40°C to +150°C.
SanRex Corp.
Port Washington, N.Y.

Circle 303

Digital Potentiometers

The 32-tap CAT5115 Digitally Programmable Potentiometer (DPP) ICs draw less than 5 µW in standby mode and operate with a 2.5-V to 5.5 -V power supply voltage. Wiper position is controlled by a 3-wire up/down control interface. At power-up, the wiper is set to mid-scale or tap 15. Resistance value options of 10 kΩ, 50 kΩ and 100 kΩ are offered. They're available in 8-lead SOIC, TSSOP, DIP and MSOP packages.
Catalyst Semiconductor, Sunnyvale, Calif.
Circle 308

Standard Power Modules

Incorporated into the popular 34-mm and 62-mm packages, called the D1, D3 and D4, these devices are offered in single-switch, phase leg, boost and buck configurations using 600 V to 1700 V NPT IGBTs. They're also dedicated to medium- and high-power hard switching applications.
Advanced Power Technology, Bordeaux, France
Circle 315

Epoxy Molding Compound

Hysol GR725 is a semiconductor-grade molding compound designed for use on power ICs and power discrete devices that operate at high temperatures and require good electrical stability. This green, non-Bromine/Antimony, epoxy cresol novolac-type material is flame retardant and offers good adhesion to Ni/Pd/Au and Cu/Ag lead frames. It also offers a wide processing window and provides 20,000 hours at 200°C HTSL.
Henkel Loctite Corp., Olean, N.Y.
Circle 302

PWM Controller IC

The MAX5051 is a 2-switch topology PWM controller IC that facilitates the design of clamped, 2-switch forward converters. The 2-switch topology reduces voltage stress on external MOSFETs, allows the use of lower on-resistance MOSFETs, and recovers energy stored in transformer leakage and magnetizing inductance. It operates with an input voltage range of 11 V to 76 V.
Maxim Integrated Products, Sunnyvale, Calif.
Circle 312

Half-Brick DC-DC Converters

The HEHB-70A Series delivers 70 A at efficiencies as high as 90% at high-current/low-voltage outputs required by next-generation semiconductors used in telecom and data processing applications. The true single-board, open-frame packaging and synchronous rectification result in optimal thermal performance and low power dissipation, providing high-current density at elevated temperatures.
Magnetek, Chatsworth, Calif.
Circle 313

Power Supply Controller

The SMT4004A is a 4-channel, differential tracking power supply controller that's supplemented with comprehensive monitoring and supervisory functions. It's configurable to differentially track up to four power supplies, typically within 100 mV of each other, as they follow a selected 100, 250, 500 or 1000 V/Sec internally generated ramp during power up or power down.
Summit Microelectronics, San Jose, Calif.
Circle 310

Step-down Switching Regulator

The LT1976EFE high-voltage step-down switching regulator with Burst Mode® operation keeps quiescent current under 100 µA. It operates within a VIN range of 3.3 V to 60 V, making it ideal for load dump or cold-crank conditions in automotive applications. Its 1.5-A internal switch delivers up to 1.25 A of continuous output current to voltages as low as 1.25 V.
Linear Technology Corp., Milpitas, Calif.
Circle 301

Programmable Analog Chip

The new AN221E02 makes programmable analog affordable for simple analog filtering, sensor conditioning and basic PID control applications. Using half the configurable analog block (CAB) resources of previous Anadigmvortex FPAAs, the AN221E02 serves in many industrial, audio, automotive, medical, communications, automatic test equipment, and instrumentation systems, replacing discretes or ASICs with a programmable, single-chip device. Statically and dynamically reconfigurable, it allows on-the-fly, real-time control of analog functions by the microprocessor in an embedded system.
Anadigm, Campbell, Calif.
Circle 316

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