Power Electronics / Power Management


Latest Articles

Uninterruptible power supplies for 24 V systems
14 July 2004, Phoenix Contact
The new Quint Buffer and Quint DC-UPS uninterruptible power supplies (UPS) from Phoenix Contact ensure continuous operation of all 24 V devices in electrical installations during power interruptions. ...

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Events Calendar
July 2004, Exhibitions / Conferences
July:    * 18-20 July - Retail Trade Expo + Conference, Gallagher Estate, Midrand    * 28-30 July - Non-profit Marketing, Jhb - Marcus Evans Conferences       August: * 2-3 August - Supply Chain World, Sandton ...

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Wide range input boost regulators
30 June 2004
ON Semiconductor claims its NCP144x series of 280 kHz and 560 kHz boost regulators offer design engineers low-cost power conversion solutions for a wide range of battery-operated applications. Each of ...

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DC/DC controller tracks supplies and requires no sense resistors
30 June 2004
Linear Technology's low input voltage synchronous 2-phase DC/DC step-down controller, the LTC3736, is capable of regulating and tracking two supplies. For high operating efficiency, the device drives ...

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Synchronous step-up converter 96% efficient
30 June 2004
Linear Technology's LTC3421, a 3 MHz, current mode, synchronous boost DC/DC converter with true output disconnect and inrush current limiting, has internal switches that provide a 3 A current limit (min) ...

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Fully integrated ±100 A open loop current sensor
30 June 2004
Allegro MicroSystems has introduced a fully integrated ±100 A open loop current sensor. Involving the continued use of linear Hall-effect sensor devices in current sensing applications, the programmable ...

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Adaptive ballast control chip for CFL
30 June 2004
International Rectifier's IR2520D is a compact fluorescent lamp (CFL) ballast control IC that can adapt to changing supply voltage, frequency and lamp conditions to increase lamp life and reliability. ...

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Very high capacitance double layer capacitors
16 June 2004, Denver Technical Products
Denver Technical Products offers double layer capacitors that have a very high energy density for memory backup power. The Maxcap double layer capacitors are a new electric energy storage device with ...

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High efficiency charge pumps for white LEDs
16 June 2004, Hi-Q Electronics, Products & Solutions
Advanced Analogic Technologies' charge pumps for white LED applications combine a loadswitch (1X) with fractional (1,5X) and doubling (2X) conversion, to support LEDs with a wide range of forward voltages. ...

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Smallest power system on a chip
16 June 2004, Security Services & Risk Management
Enpirion has released what it claims is the world's smallest power system on a chip (PSoC). The EN5330 integrated DC-DC converter is for use in point of load (POL) applications. The device, which features ...

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Low standby power semiconductors
16 June 2004, Electrocomp, Information Security
Infineon Technologies claims its third generation integrated multichip power IC family provides the industry's lowest standby power consumption. The CoolSET F3 family exceeds specifications of such standards ...

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Chipscale P-Channel MOSFET sets new record
16 June 2004
A chipscale p-channel power MOSFET claimed to offer the industry's lowest on-resistance of such a device with footprint under 3 mm2 has been released by Vishay Siliconix. Aimed at battery switch, power ...

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Control IC for halogen lamp transformers
16 June 2004, Infrastructure
The IR2161 is an 'intelligent' control IC specifically designed for electronic transformers that drive low voltage halogen lamps. All necessary features are integrated into a single 8-pin DIP or SOIC, ...

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Choosing the right power management bus for portable system designs
2 June 2004, Hi-Q Electronics
Portable system designers are continually struggling to add more innovative features and at the same time minimise power consumption. Thus, designers must integrate system power management components, ...

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Isolated 48 V, 300 W converter for Power-over Ethernet and VoIP
2 June 2004
Vicor's newest member of its V•I Chip bus converter module (BCM) family, the B048K480T30, is rated for 300 W and with an efficiency of 97%. It provides 2250 V d.c. primary-to-secondary isolation with ...

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PS/2 size 230 W redundant power supply
2 June 2004, Centurion Micro Electronics
This power supply from IEI Electronics has an input of 90 to 130 V a.c. or 180 to 260 V a.c. (selectable), with maximum output power of 230 W at 30°C. It also has a power fault warning in that should ...

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AC-DC power converters
2 June 2004, Perimeter Security, Alarms & Intruder Detection
The Convert Select front end line from Power One is a family of DIN-rail mountable AC-DC converters with power factor correction. The converters are suited for use in demanding applications such as power ...

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DIP-8 power conversion IC delivers 34 W with no heatsink required
2 June 2004, Perimeter Security, Alarms & Intruder Detection
The expanding TOPSwitch-GX high-voltage power conversion IC family from Power Integrations has added another member - the DIP-8 packaged TOP246P, which delivers up to 34 W of continuous power without ...

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GaAs Schottky diodes have improved performance
2 June 2004, Security Services & Risk Management
Ixys offers a new generation of high speed Gallium Arsenide Schottky diodes. An extended product range offering breakdown voltage from 180 to 600 V, a much reduced reverse current and higher current density, ...

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Ultra-high efficiency DC-DC IBA converter
2 June 2004
Power-One has introduced a 96,2% ultra-high efficiency quarter brick DC-DC converter capable of delivering up to 300 W of power for 12 V d.c. intermediate bus architecture (IBA) applications. The QTS48T25120-NDA0 ...

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