Power Electronics

New Products

36V Hot Swap Controller

The LT4254 positive Hot Swap controller allows boards with supplies up to 36V to be inserted into a live backplane without damaging connectors or causing glitches. Offered in a 16-lead SSOP package, it provides an open-circuit detect output used to indicate abnormally low load current conditions or no load presence.
Linear Technology Corp., Milpitas, Calif.
Circle 304 freeproductinfo.net/pet

Hot-Swap Front Ends

PCP/TPCP front ends drive power buses for distributed power systems. Three different models produce 48Vdc at 25A (1200W), 24Vdc at 41.7A (1000W), and 12Vdc at 66.7A (800W). Their ultracompact case is 1U high (1.6 in. or 41 mm) × 5 in. (127 mm) wide × 10 in. (254 mm) deep, resulting in up to 15W per cubic inch power density.
Unipower, Coral Springs, Fla.
Circle 313 freeproductinfo.net/pet

Ultraprecision Metal Film Resistors

CAR Series ultraprecision metal film resistors have an epoxy coating that offers high reliability and superior moisture performance, giving a typical long-term damp heat stability of 0.02%. They offer three power ratings of 0.25W, 0.33W, and 0.5W at 70°C ambient. Limiting voltages are 250V, 350V and 500V, respectively. Resistance values are from 10R0 to 10MΩ, with tolerances down to 0.01% and TCRs to 5ppm/°C.
Welwyn Components, Northumberland, U.K.
Circle 308 freeproductinfo.net/pet

DC-DC Converters

The D100VHI series of 1W SIP converters provides miniature packaging, ultrahigh input/output isolation and low cost. Twelve models operate from 5Vdc and 12Vdc inputs, providing outputs of 5, 12, 15, ±5, ±12, or ±15Vdc. Standard features include an input/output isolation of 6000Vdc, an internal filter, and efficiency as high as 75%.
MicroPower Direct, Stoughton, Mass.
Circle 318 freeproductinfo.net/pet

EDA Tool

The AnadigmPID tool fully automates the development of analog PID control loops. Reducing to minutes the time required to design and implement one of the most common types of control circuits in industrial, medical, and communications applications, it lets users build an analog PID control loop on an integrated silicon platform by specifying the top-level control coefficients. Once designed and simulated, the controller circuit can be immediately downloaded to an FPAA for testing and validation.
Anadigm, Campbell, Calif.
Circle 306 freeproductinfo.net/pet

Miniature LEDs

Devices in the TLM×2100 and TLM×2300 MiniLED families are available in typical wavelengths from 465 nm to 630 nm, providing exceptionally bright illumination at 10 mA and 20 mA, respectively. TLM×2100 color options include super red (7.5 mcd), orange (7.5 mcd), yellow (7.5 mcd), green (10.0 mcd), pure green (2.2 mcd), and blue (7.0 mcd). For applications requiring maximum intensity, TLM×2300 devices built on AllnGaP on GaAs technology are offered in ultra-bright red (80 mcd), orange (120 mcd), and yellow (120 mcd) versions.
Vishay, Malvern, Pa.
Circle 315 freeproductinfo.net/pet

DC-DC Converters

The TPS6204x family of step-down converters enables an extremely low quiescent current of 18 µA and 95% conversion efficiency to conserve battery life in one-cell lithium-ion (Li-Ion) or three-cell nickel-metal-hydride (NiMH) and nickel-cadmium (NiCd) powered applications. They reduce board space by integrating necessary switching transistors and operating at a fixed frequency of 1.25 MHz to minimize inductor size.
Texas Instruments, Dallas
Circle 312 freeproductinfo.net/pet

N-Channel MOSFETs

The µTrenchMOS 20V, 30V, and 60V N-channel MOSFETs are available in ultracompact SOT323 and SOT363 packages. Key features include low RDS(on) of typically 500mΩ, very low VGS(th) down to 1.8V, and rapid switching. They also can be driven from 3V battery supplies.
Philips, Eindhoven, Netherlands
Circle 316 freeproductinfo.net/pet

Hot Swap Power Controller

The new MIC2584 and MIC2585 dual-channel hot swap power controllers come in 16-pin and 24-pin TSSOP packages, respectively. The MIC2584's default output voltage mode is tracking. The MIC2585 can be configured for output voltage tracking- or staggered-mode operation. In addition to protecting against overcurrent fault conditions, the MIC2585 monitors each output for overvoltage and undervoltage events.
Micrel Semiconductor, San Jose, Calif.
Circle 309 freeproductinfo.net/pet

Heatsink Attachment

These Solder Anchor attachment solutions for BGA semiconductor devices vary in size from 23 mm2 to 43 mm2. Heatsink pin heights are from 10 mm to 35 mm in height to cover many power dissipation requirements. The wire spring clip version allow quick “no tools required” assembly and rework without damage to the device or printed circuit board.
AAvid Thermalloy LLC, Concord, N.H.
Circle 324 freeproductinfo.net/pet

Core Regulator

The ISL6247 is a multiphase synchronous buck PWM controller with 6-bit VID input optimized for Mobile Intel® Pentium® 4 processors on 852PM and GME chip-set platforms. Combined with the Endura power management solution, they bring high performance and extended battery life to transportable notebook PCs running at speeds up to 3.06 GHz. The ISL6247 2- to 4-phase controller combined with the ISL6207 MOSFET driver ICs supports Enhanced Intel® SpeedStep® technology, Deep Sleep, and Deeper Sleep modes.
Intersil Corp., Milpitas, Calif.
Circle 321 freeproductinfo.net/pet

Battery Charge Controller

The AAT3680 linear battery charge controller supports a 1-cell or 2-cell (4.2V or 8.4V) lithium-ion or Polymer pack. It supports all charging modes, including trickle charge, constant current, and constant voltage, and provides a set of protection features for overcurrent, overvoltage, and temperature protection. It also features a 1 MHz microprocessor serial interface, which transmits to the system chip the state of the battery. Designed for consumer portable applications, it accepts an input voltage of 4.5V to 15V.
Advanced Analogic Technologies Sunnyvale, Calif.
Circle 319 freeproductinfo.net/pet

Switchers

Second-generation PSF-151 power supplies provide a low-cost, high-quality alternative for OEM electronic equipment designers. Applications include industrial microcomputers, networking devices, and process control equipment. They meet FCC class B and EN55022B conducted noise limits. Completed safety approvals include cUL1950 Third Edition, TUV EN60950 and CE (LVD). With typical efficiency at 80%, the power supply's output delivers 90Vac to 264Vac and 47 Hz to 63 Hz. Leakage current for the power supply is <2mA at 254Vac.
Phihong, Fremont, Calif.
Circle 323 freeproductinfo.net/pet

Power Switch

FS6X1220RT FPS off-line power switch is for dc-dc forward or flyback power supply applications, VOIP phones, digital feature phones, industrial power supplies, and telecom central office and PBX power supplies. Available in TO-220F-5L and D2-PAK-5L packages, it integrates a fully avalanche-rated SenseFET (200V minimum breakdown rating) with a current mode PWM IC. Internal features include overvoltage, overload, cycle-by-cycle current limit, and thermal shutdown protection.
Fairchild Semiconductor, San Jose, Calif.
Circle 310 freeproductinfo.net/pet

Power Supplies

The LP-MD Series of medically approved power supplies features a modular design that enables more than 250,000 power supply configurations. A choice of four chassis ranging from 150W to 450W is available for customizing the power supply to specific application requirements. Configuration of one to five isolated outputs is available from a selection of 39 output modules. Outputs range from 1.8Vdc to 48Vdc.
XPiQ, Holliston, Mass.
Circle 325 freeproductinfo.net/pet

Multiphase Controller

NCP5331 multiphase controllers with integrated gate drivers support AMD Opteron processors. Housed in a 7 mm × 7 mm 32-lead QFN package, their lossless inductor current sensing enables precise current sensing without additional components. Output voltage is set by a highly accurate 5-bit digital-to-analog converter programmable from 0.8V to 1.55V.
ON Semiconductor, Phoenix
Circle 303 freeproductinfo.net/pet

Low Profile FPC Connector

The 6298 Series low pin count, low-profile (0.90 mm), flexible printed circuit (FPC) connectors allow PCB connections in handheld electronic devices. Featuring a front-hinged actuator, they lock the flex cable into position. They also provide an easy operating actuator with an audible “click feeling” feature to confirm positive cable connection. Available in three to six position configurations, they accept 0.20-mm thick flex circuits. Voltage rating is 50V maximum at 0.4A per pin, with an operating temperature range of -25°C to 85°C.
AVX Corp., Myrtle Beach, S.C.
Circle 307 freeproductinfo.net/pet

Power Supplies

The LQ family of power supplies is for applications having 10kW output power requirements. They offer a module from 1kV to 12kV that provides a fully adjustable output voltage and current range, while providing low output ripple and noise, proprietary Arc Quench and Arc Count circuitry, low stored energy and reduced weight in a 8.75 in. height (5U) rack-mount enclosure.
Glassman High Voltage Inc. High Bridge, N.J.
Circle 322 freeproductinfo.net/pet

DC-LVDT Position Sensors

The DC 750 Series of dc-operated LVDT position sensors is for highly accurate, repeatable measurement in a variety of OEM applications. Offered in a standard ¾-inch (19 mm) diameter, they're ideal for machine tool positioning, hydraulic cylinder positioning, valve position sensing, and automatic assembly equipment. With built-in electronics that provide the desirable features of an AC-LVDT, they also offer a ±15Vdc input and a precalibrated 0Vdc to ±10Vdc output.
Macro Sensors, Pennsauken, N.J.
Circle 327 freeproductinfo.net/pet

Voltage Suppressors

The 0402 case size of miniature surface-mount transient voltage suppressors provides superior electrical performance in computer I/O ports, USB ports, infrared ports and links, RF links, and keyboard and mouse circuitry. They provide bidirectional ESD protection, EMI attenuation, and sub-nanosecond response time. Available for applications with circuit voltages up to 18V, with an energy rating of 15 mJ and a typical capacitance range from 3 pF to 10pF at 1 MHz, they're rated for operation over the temperature range from -55°C to 125°C.
AVX, Myrtle Beach, S.C.
Circle 301 freeproductinfo.net/pet

Indicating Sensor

The Tactilus® electronic tactile force and pressure indicating sensor allows engineers to monitor how force is disbursed between any two contacting, impacting, or mating surfaces in real-time. Any application or test where pressure lies between 0.007 kg/cm2 and 633 kg/cm2 (0.1 PSI and 9000 PSI) is a candidate for Tactilus® technology. Manufacturing process control, machine/component inspection, and calibration are areas where applications exist for use of this system.
Sensor Products Inc. East Hanover, N.J.
Circle 328 freeproductinfo.net/pet

Surface-Mount LEDs

The 1104B Series of LEDs features a wide 120° viewing angle with high luminous intensities of up to 300 mcd (If=10mA), depending on the die and color. It's designed with a water clear lamp housing in an industry-standard PLCC-2 type surface-mount package just 1.9 mm high. New colors include the blue Model UB1104B and the blue-green Model UG1104B, both with an InGaN/SiC die, and a luminous intensity of 100 mcd and 300 mcd (If=10mA), respectively. The red Model FR1104B and yellow Model FY1104B, both with an AllnGaP die, have a luminous intensity of up to 70 mcd (If=20mA).
Stanley Electric, Irvine, Calif.
Circle 326 freeproductinfo.net/pet

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