Power Electronics

New Products

Multilayer Varistors

The MLV 2322 lead (Pb)-free, multilayer varistors combine typical 0.5 ns response time with capacitance values down to 70 pF (25 pF optional). The MLV 2322 573 (0603 case size) and 2322 574 (0805 case size) series protect sensitive components from incoming overvoltage transients. They also suppress electrostatic discharges reaching 15 kV in air and 8 kV in contact.

Vishay Intertechnology Inc.,
Malvern, Pa.
Circle 350 freeproductinfo.net/pet

PFC Controller

The UCC38051 transition mode PFC controller features zero power detect and improved slew rate response. It features increased functionality for off-line and dc-dc switch mode power supplies, and a low offset transconductance voltage amplifier for feedback error processing, a multiplier for generating a current command in sync with the input voltage, and a current sense PWM comparator with logic.

Texas Instruments, Dallas
Circle 316 freeproductinfo.net/pet

Low-Voltage MOSFET

The FDJ129P P-Channel MOSFET offers performance and space-savings benefits in power management applications such as cell phones, PDAs, portable music players, GPS receivers, low voltage/low power dc-dc converters, and digital cameras. It features PowerTrench® technology in a compact SC75 FLMP (flip leaded molded package), which results in a 60% board space reduction. It offers power dissipation of 1.8W and a maximum steady-state current of 4.2A.

Fairchild Semiconductor,
San Jose, Calif.

Circle 302 freeproductinfo.net/pet

DC Power Sources

The DCS 1000W and 1200W programmable dc power sources are the latest in the Sorensen line of dc products. These compact, 1U-high supplies consist of 24 models of voltage from 3V to 600V. Available with free LabView drivers, optional IEEE 488 and RS 232 programming interfaces are also offered. In addition, they can be paralleled in either master or slave mode.

Elgar Electronics Corp.,
San Diego, Calif.

Circle 326 freeproductinfo.net/pet

Li-Ion Battery Charger

The LTC4002 standalone switch-mode Li-Ion battery charger has an operating supply as high as 24V. Low 4.7V input supply and low dropout operation of the IC guarantee continuous charging of 4.2V Li-Ion batteries from 5V wall adapters. It also includes automatic shutdown, battery preconditioning, battery temperature sensing, end-of-charge indicator and a 3-hr charge termination timer.

Linear Technology Corp.,
Milpitas, Calif.

Circle 306 freeproductinfo.net/pet

V I Chip VTM

The V048K015T80 V·I chip voltage transformation module (VTM) meets the demands of advanced DSP, FPGA, ASIC, processor cores, and microprocessor applications at the POL while providing isolation from input to output. It achieves a response time of less than 1 µs and delivers up to 80A in a volume of less than 0.25 cubic inch while converting 48V to 1.5V with unprecedented efficiency. VTMs may be paralleled to deliver hundreds of amps at an output voltage settable from 1Vdc to 1.8Vdc at no load, and 0.9Vdc to 1.7Vdc at full load.

Vicor Corp., Andover, Mass.
Circle 318 freeproductinfo.net/pet

Surface-Mount TCVCXO

The RTVS-104 Series surface-mount TCVCXO measures 3.2 mm × 2.5 mm × 1.2 mm in a ceramic package. Offered in frequencies of 19.200 MHz, 19.680 MHz, and 26 MHz, it's ideal for use in CDMA, GSM, GPRS, and GPS applications. With supply voltages of 2.4Vdc or 2.8Vdc, it offers a very low current consumption of 1.5mA. It operates over a temperature range of -30°C to 80°C.

Raltron, Miami
Circle 308 freeproductinfo.net/pet

Gate Drive Transformers

Designed to support high-speed dc-dc converters in switching power supply applications, the SM76760, SM76922, SM76924, and SM76925 gate drive transformers operate at speeds of up to 22.2Vus, feature a hi-pot rating of up to 1500Vdc, and come in a miniature low-profile surface-mount packages. With an inductance range from 330uH to 2mH, they provide excellent drive characteristics for power supplies.

Datatronic Distribution Inc.,
Romoland, Calif.

Circle 328 freeproductinfo.net/pet

PFC Low-Profile Supply

PowerBank PB1506PFC adds power-factor correction capability. From inputs of 115/230Vac, it provides up to six configurable main outputs and two low-power auxiliary outputs. Output power is 1200W at 110Vac and 1500W at 220Vac. Internal fans provide cooling. Dimensions are 16.84 in. × 12.6 in. × 1.75 in.

Northwest Power Integrations, Milwaukie, Ore.
Circle 352 freeproductinfo.net/pet

Medically Approved Converters

The ECM130 Series 130W open frame power supply offers high power in a compact size. Measuring 3 in. × 5 in. × 1.28 in., these converters provide a continuous 100W output at up to 50°C with convection cooling, or 130W with forced air. The series features zero-voltage switching technology.

XPiQ Inc, Holliston, Mass.
Circle 351 freeproductinfo.net/pet

Programmable Analog Chip

The AN221E02 programmable analog chip features a field-programmable analog array (FPAA) that combines dynamic reconfiguration capabilities with a resource structure optimized for cost-sensitive applications. 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 330 freeproductinfo.net/pet

Servo/Motor Drive Module

The PIIPM15P12D007 servo and motor drive module is rated at 1200V, 15A and includes the bridge, brake, and inverter (BBI) functions in a single unit. The BBI module includes high performance sensing and protection circuits, such as current-sensing with greater than 10-kHz bandwidth and a latency of less than 5µs on two motor phase outputs.

International Rectifier, El Segundo, Calif.
Circle 325 freeproductinfo.net/pet

Ultrafast 3A LDO

The MIC49300 ultralow output voltage, high-current low-dropout regulator provides a well-regulated supply for next-generation processor cores. With its 3A output current and 0.9V output voltage capability, it responds instantly to any abrupt change in load current. The main supply to the device requires only 400mV headroom, or dropout voltage, under worst-case conditions to maintain proper regulation, while a second, higher supply provides bias voltage to the control circuit.

Micrel, San Jose, Calif.
Circle 303 freeproductinfo.net/pet

Switching Regulators

The SR20 and SRA40 are 20W and 40W constant frequency current mode, step-up converters. The SR20 accepts 5Vin to 8Vin and provides 9V, 12V, 15V, 18V, and 24Vout, while the SRA40 accepts 10Vin to 17Vin and provides 15V, 18V, and 24Vout. They achieve high power density, low cost, and high reliability via high switching frequency and SMD technology. Package size is 1 in. × 2 in. × 0.39 in.

Beta Dyne, Bridgewater, Mass.
Circle 311 freeproductinfo.net/pet

Sealed Lead Acid Chargers

These lead acid battery chargers are designed to work with batteries that have been discharged to the manufacturers' recommended 1.75V per cell (5.25 for a 6V battery and 10.5V for a 12V battery). If the batteries have been discharged below that point or if the battery is near the end of its service life, it may draw more current than the charger it is designed for. In that case, the charger will fail safely by tripping a one-time discharge thermal fuse mounted on the primary windings.

Cell-Con, Exton, Pa.
Circle 309 freeproductinfo.net/pet

Analog Switches

The DG200 Series of low-voltage, high-performance analog switches includes a single-pole/double-throw switch in a 1.6 mm × 1.6 mm package footprint. The new switches are for routing and selecting signals in battery-operated and portable audio, video, and data equipment. A high-density CMOS process improves device performance for lower on-resistance, better on-resistance flatness, high off-isolation, lower cross talk, and wider bandwidth. Supplied in surface-mount packages, they're available in single, dual, and quad configurations.

Vishay Siliconix
Santa Clara, Calif.

Circle 320 freeproductinfo.net/pet

Overvoltage Fault Protectors

The ROV series of metal oxide varistors (MOVs) is for overvoltage fault protection on various power systems. Applications include security systems, power supplies, and surge strips. It also protects equipment from potential power surge damage by clamping high-energy, short-duration impulses. Available in 5 mm to 20 mm diameters, its rated from 18V to 1800V, is available in radial-leaded configurations, and can be supplied in tape-and-reel packaging for compatibility with high-volume assembly.

Raychem Circuit Protection, Menlo Park, Calif.
Circle 310 freeproductinfo.net/pet

Voltage-Protection Devices

These protection devices integrate multiple transient voltage suppression (TVS) components into a single 1.6 mm × 1.6 mm × 0.6 mm SOT553 or SOT563 package. In addition to meeting ESD protection requirements, they reduce board space by 36% and offer a 40% lower profile than SC88 packages. Ideal for use in portable applications, they come in unidirectional and bidirectional.

On Semiconductor, Phoenix
Circle 314 freeproductinfo.net/pet

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