Power
Step-down converter has fast transient response to meet strict GSM specs
The power supply supporting a GSM handset baseband chipset must wake up to full load within microseconds. By integrating a fast transient 600mA step-down converter and a 300mA LDO, AnalogicTech’s AAT2505 forms a complete high-performance power supply solution for GSM handset baseband core and I/O.
RoHS-Compliant DC/DC Input Filter
Power-One has introduced the F4804A input filter. This RoHS-compliant product is designed to minimize the conducted and radiated emissions generated by switch-mode DC-DC converters to facilitate meeting FCC and EN55022 Class B conducted emissions requirements. When compared to previous generation F4804 products, the F4804A offers increased common-mode attenuation, improved elevated-ambient-temperature performance, and a lower-profile package.
High-Voltage IC for Resonant Half-Bridge Topology
STMicroelectronics has introduced an advanced double-ended controller specifically designed for the series-resonant half-bridge topology. The new-generation high-voltage IC is said to guarantee excellent performance, allowing the design of fully protected and highly reliable power supplies that are particularly suited for use in applications such as Liquid Crystal Display (LCD) and Plasma Display Panel (PDP) TVs, high-end AC-DC adapters for lapto...
0.9V-White LED Driver Requires Just One External Component
PREMA has introduced a white LED driver designed for a variety of applications. The core of the new driver PR4401 consists of a step-up converter with current output, that provides an output voltage of typically 3.6V for white LEDs. The input voltage can be as low as 0.9V, thus allowing a single cell battery operation.
ThePowerSupplyShop Celebrates 1966 by offering a DIN-Rail PSU for £19.66
To celebrate the World Cup ThePowerSupplyShop.Co.Uk. is offering the CS4, 24VDC output DIN-Rail power supply for what it calls a “football crazy” price - just £19.66. The very compact CS4 Din-Rail power supply has an input range of 90-264VAC at 50-60Hz and output of 24VDC @ 1A continuous. This low output noise power supply is suitable for SELV and PELV applications, is overload and short circuit protected and has greater than 85% efficienc...
Avago's CoolPAM power amplifiers used by a Leading Handset Chipset Supplier for HSDPA/W-CDMA Reference Design
Avago Technologies has announced that its CoolPAM power amplifier modules have been incorporated in a reference design from a leading W-CDMA chipset supplier. Handsets based on the design will ship beginning this fall, giving manufacturers a time-to-market advantage in delivering the major functionality for multi-mode third-generation (3G) mobile phones, data cards, PDAs and other mobile devices.
Capacitor-free LDO offers One Percent Voltage Regulation Accuracy
Texas Instruments has introduced a series of 1.5-A and 3-A low-dropout linear regulators that feature a one percent voltage regulation accuracy rate over line, load and temperature. The easy-to-use LDOs meet the sequencing requirements for high-current applications such as telecom, notebooks and servers that use FPGAs and TI's digital signal processors (DSPs).
Online simulation tool for power management applications
Microchip has announced a Web-based simulation tool for power-management applications. Known as the Mindi simulation tool, the new software enables designers to quickly generate detailed circuit diagrams and specify associated passive components for a variety of power-supply and battery-charger applications.
4x4mm Dual-Band Power Amplifier from Fairchild Saves Space, Extends Range in WLAN Applications
Building upon its established portfolio of WLAN power amplifiers, Fairchild Semiconductor has introduced its FMPA2151, a highly integrated dual-band WLAN power amplifier module optimized to increase performance and reduce PCB board footprint in the latest 802.11a/bg WLAN applications, including notebooks, digital cameras and portable handsets.
Compact Desktop 100W Medical Supply
Power Sources Unlimited has announced the MPU100 Series of 100W AC/DC external power supplies. The compact supply measures only 7.4 x 3.52 x 1.79in and features 4000VAC input to output isolation and safety ground leakage current of 0.1mA at 240VAC. Achieved efficiencies are 83% typical and the operating temperature is 0C to 70C, with derating after 50C.