Power Electronics

New Products

Digital Power IC

The DPC1-3 microprocessor peripheral interfaces to high-current power devices. Capable of gate drive of the high and low side of three half bridges, it measures and converts the current through two bridges. It interfaces to the microprocessor through a serial interface receiving 10-bit PWM values and providing digital values of current, temperature, high-voltage, and short-circuit status.
Agile Systems Inc.,
Waterloo, Ontario, Canada,

Circle 301 freeproductinfo.net/pet

Low Value Chip Resistors

The CRL Series of low value chip resistors can be used in current sense applications with low power loss. They extend the range of resistance to 0.01Ω — 100 times lower than the 1.00Ω limit of the CR series. They also offer values from 0.01Ω to 9.10Ω, and packaging sizes from 0603 to 2512.
Bourns Inc., Riverside, Calif.
Circle 314 freeproductinfo.net/pet

High-Voltage Transformer

The Model 4283-1300 fine-wire high-voltage transformer delivers 0.2W continuous power. At 0.22-in. high, it comes in full-wave or flyback designs, has open construction in a surface-mount design, and typically operates at frequencies to 500 kHz, with up to 800V output.
Datatronics Romoland Inc.,
Romoland, Calif.

Circle 315 freeproductinfo.net/pet

Power Supply Controller

Si9139 power supply controller takes a 4.5V to 30V input voltage and converts it to three individual, tightly regulated dc-to-dc converter outputs, and one 5V output. Rated for 50W with power conversion efficiency in the 95% range, it integrates two synchronous step-down controllers operating at up to 6A, each with seven fixed outputs from 1.5V to 3.3V, and an adjustable step-up/down controller whose output can be set to any value between 1.24V and 20V with an external resistor divider. This adjustable capability on the third output at 500mA is an industry first. An on-board 5V, 30mA linear regulator provides a fourth output.
Vishay Siliconix,
Santa Clara, Calif.

Circle 312 freeproductinfo.net/pet

Multipulse Drives

These 12- and 18-pulse drives combine transformer technology with the 6-pulse rectifier circuit used in the ACH 400 workhorse unit. Available in a 10 hp to 700 hp range at 200Vac to 480Vac, they're built in Plenum-rated NEMA 1 or NEMA 12 enclosures. Their unique phase-shifting transformer, built with a proprietary winding and connection configuration, creates an ideal voltage and impedance balance that provides maximum harmonic cancellation. They're available with an input disconnect switch or circuit breaker, bypass, and other optional equipment.
ABB, Norwalk, Conn.
Circle 305 freeproductinfo.net/pet

MIL-Spec Tantalum Capacitors

MIL-qualified, surface-mount CWR09 and CWR11 tantalum chip capacitors provide flexibility with eight case sizes. Commercially available as the TBJ Series, the CWR11 is designed to EIA standard sizes, using common board layout designs. The CWR09 A case size is the smallest molded military tantalum capacitor (2.54 mm × 1.27 mm × 1.27 mm). The CWR11 series has four case sizes and is qualified to MIL-PRF-55365/8, the military version of EIA-535BAAC and industry standard. Specifications include a capacitance range up to 470 mF. Standard capacitance tolerances are ±20% over a range of -55°C to 125°C.
AVX Corp., Myrtle Beach, S.C.
Circle 322 freeproductinfo.net/pet

New 150mA CMOS LDO

The FAN2534 150mA LDO regulator optimizes performance and cost in cellular phone applications. It offers high ripple rejection over a wide frequency range, fast turn-on (150 µs), low noise (50 µVrms), and exceptional loop stability with a variety of output capacitor types. Using advanced CMOS technology, it's ideal for wireless/RF applications and for powering applications such as PLLs and VCOs.
Fairchild Semiconductor International, San Jose, Calif.
Circle 304 freeproductinfo.net/pet

Power System Simulation Software

PSCAD Version 4 power system simulation software is used to design and simulate power systems, including power electronics and controls. By adding more power to PSCAD, simulation model development time is reduced and taxhe application execution speed is enhanced.
Manitoba HVDC Research Centre, Winnipeg, Manitoba Canada
Circle 311 freeproductinfo.net/pet

Simulation Software

PLECS software allows seamless integration of electrical circuits into Simulink models. Featuring power semiconductors modeled as ideal switches, it offers accurate simulation results and is available with its own graphical user interface. It provides modifiable libraries with electrical machines, transformers, and complete converters. It's ideal for complex problems in motion control and mechatronics.
Plexim GmbH, Zurich
Circle 306 freeproductinfo.net/pet

Voltage Reference

MAX6035 is an SOT23 voltage reference 5× smaller than comparable devices in an SO-8. It offers 4.5× lower power than REF43 and 14× lower than REF02. Consuming less than 95µA and operating with up to a 40V supply, its small footprint and low power make it ideal where high voltages, space, and power are premium.
Maxim Integrated Products, Sunnyvale, Calif.
Circle 309 freeproductinfo.net/pet

Universal Noise Attenuator

The QPO-1 QuietPower output ripple attenuation module uses active filtering in an SIP package to provide >20 dB of conducted differential noise attenuation from 60 Hz to 500 kHz. Rated for 10A, it can be used with most switchmode power supplies having output voltages from 3Vdc to 30Vdc. Measuring 1 in. × 1 in. × 0.2 in., it controls the source through the remote sense leads or the voltage trim lead.
Vicor, Andover, Mass.
Circle 303 freeproductinfo.net/pet

Hot Swap Controllers

Endura ISL6117 and ISL6120 low-voltage hot-swap controllers allow boards to be safely inserted and removed from live backplanes. The ISL6117 controls a 3.3V rail, and the ISL6120 controls a 2.5V rail. Both are targeted for use on server motherboards for low-voltage hot-swap power control and come in an 8-lead SOIC package with a 0°C to 85°C temperature range.
Intersil, Palm Bay, Fla.
Circle 308 freeproductinfo.net/pet

Bidirectional Dual MOSFET

The IRF6156 20 V dual bidirectional HEXFET® power MOSFET in a common drain configuration is 80% smaller than devices in the TSSOP-8 package, with a profile less than 0.8 mm. Housed in the FlipFET package, it's ideal for Li-ion battery pack safety and protection circuits. It reduces thermal resistance from junction-to-PCB to 35°C/W, compared to >60°C/W for SO-8 package devices. Thermal resistance junction-to-ambient is 50°C/W max.
International Rectifier, El Segundo, Calif.
Circle 302 freeproductinfo.net/pet

Power Switches

The TPS211x family of two-input, one-output power multiplexers enables seamless transition between two power sources. Designers can achieve a voltage drop of less than 0.05V at 300mA for higher efficiency and longer battery life. Featuring two internal high-side power MOSFETs — with RDS(on) as low as 84mΩ to 120mΩ — they operate from 2.8V to 5.5V, delivering up to 1A.
Texas Instruments, Dallas
Circle 317 freeproductinfo.net/pet

Intelligent Module

The L-Series IPM isolated base intelligent module is for power switching applications operating at frequencies to 20 kHz. Advantages include a 30% package size reduction and on-chip temperature sensing using the fifth-generation CSTBT chip for low loss. Offered in six- and seven-packs from 50A to 150A at 600V, and 25A to 75A at 1200V, it's for use in inverters and servo-motor control.
Powerex, Youngwood, Pa.
Circle 307 freeproductinfo.net/pet

Power Supply Controller

The LX1676 is a highly integrated VRM power supply controller that reduces components to cut costs for applications using AMD Mobile Athlon processors. LoadSHARE and transient correction loop technologies minimize capacitors and eliminate current sense resistors. Its two constant frequency voltage-mode PWM switching regulator stages are configured as a single biphase high-current output core supply. Available in MLPQ or TSSOP 38-pin surface-mount packages suitable for commercial applications operating from 0°C to 70°C, frequency of PWM operation is 200 kHz to 1 MHz.
Microsemi, Irvine, Calif.
Circle 310 freeproductinfo.net/pet

Controller

Featuring a Power Good input, the LTC4212 Hot Swap controller allows several dc-dc converters to be monitored simultaneously for power-up operation. Available in an MSOP package, it disconnects the system supply if a dc-dc converter fails to enter into regulation within a programmable period. An internal high-side switch driver controls the gate of an external N-channel MOSFET for supply voltages ranging from 2.5V to 16.5V.
Linear Technology Corp.
Milpitas, Calif.

Circle 316 freeproductinfo.net/pet

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