Free Newsletter
Register for our Free Newsletters
Newsletter
Zones
Advanced Composites
LeftNav
Aerospace
LeftNav
Amorphous Metal Structures
LeftNav
Analysis and Simulation
LeftNav
Asbestos and Substitutes
LeftNav
Associations, Research Organisations and Universities
LeftNav
Automation Equipment
LeftNav
Automotive
LeftNav
Biomaterials
LeftNav
Building Materials
LeftNav
Bulk Handling and Storage
LeftNav
CFCs and Substitutes
LeftNav
Company
LeftNav
Components
LeftNav
Consultancy
LeftNav
View All
Other Carouselweb publications
Carousel Web
Defense File
New Materials
Pro Health Zone
Pro Manufacturing Zone
Pro Security Zone
Web Lec
Pro Engineering Zone
 
 
 
News

New multi-output, sequence-selectable power-supply controller converts power efficiently

Vishay Electronic : 01 March, 2002  (New Product)
Siliconix incorporated, an 80.4%-owned subsidiary of Vishay Intertechnology, today announced the release of a multi-output, sequence-selectable power-supply controller intended for mobile computing and communications applications. With up to 95% conversion efficiency achieved with synchronous rectification, the new low-noise Si9137 dc-to-dc controller helps to maximize battery life in portable products, including notebook and subnotebook computers, PDAs, mobile communicators, and portable displays.
Siliconix incorporated, an 80.4%-owned subsidiary of Vishay Intertechnology, today announced the release of a multi-output, sequence-selectable power-supply controller intended for mobile computing and communications applications. With up to 95% conversion efficiency achieved with synchronous rectification, the new low-noise Si9137 dc-to-dc controller helps to maximize battery life in portable products, including notebook and subnotebook computers, PDAs, mobile communicators, and portable displays.

The highly efficient Si9137 features fixed 3.3-V and 5-V outputs and a 500-mA adjustable 5-V to 12-V output set by an external resistor divider. Additional features include programmable output sequencing, a 3.3-V reference for precision analog circuits, a 5-V/30-mA linear regulator output for MOSFET gate voltage control, and output current limit and over/under voltage protection.

To minimize power consumption, the Si9137 operates in power-saving pulse skipping mode (PSM) at light loads. Operational frequency is fixed at a 300 kHz to reduce noise and output voltage regulation is 3% over the combined line voltage, load current, and temperature extremes.

A wide input voltage range of 5.5 V to 30 V gives designers a flexible power-supply conversion solution requiring minimal external control components. The Si9137 provides selectable pre-programmed power-up sequencing, power-good signal with delay, internal frequency compensation networks, and automatic boot-strapping. Just three inductors are needed for a complete 75-W power conversion solution based on the Si9137, eliminating the need for a transformer.

The Si9137 is available in the 28-pin SSOP package and specified to operate over the extended commercial temperature range of 0C to 90C.

Samples and production quantities of the Si9137 are available now, with lead times of eight weeks for larger orders.
Bookmark and Share
 
Home I Editor's Blog I News by Zone I News by Date I News by Category I Special Reports I Directory I Events I Advertise I Submit Your News I About Us I Guides
 
   © 2012 NewMaterials.com
Netgains Logo