Product category: Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS2490 and TPS2491
Edited by the Electronicstalk Editorial Team on 8 January 2004
Hot-swap managers provide MOSFET protection
The TPS2490 and TPS2491 are the industry's first hot swap power managers featuring programmable power and current limit functions for positive 9 to 80V systems
Simplifying high voltage system design, the new 10-pin, 3 x 5mm controllers take advantage of TI's new 0.7um silicon-on-insulator analogue process to ensure complete mosfet safe operating area (SOA) protection. The TPS2490 and TPS2491 hot swap managers are ideally suited to support and protect emerging positive high voltage distributed power systems, such as 12, 24 and 48V server backplanes, storage area networks, medical systems, plug-in modules and wireless basestations.
This article was originally published on Electronicstalk on 8 January 2004 at 8.00am (UK)
Related stories
Changing wireless landscape explained
TI will showcase the latest mobile products that enable its customers to innovate in a world driven by demand for on-the-go entertainment and productivity at CTIA Wireless 2006
Webcast to address wireless power optimisation
Texas Instruments and Avnet Electronics Marketing will present a live Analog eLab webcast on 'Optimising power in low-power wireless systems' on 12th April 2006
'One of the major concerns for power designers of positive high-voltage power systems is maximising voltage operation while achieving low channel resistance', said Rich Valley, Vice President of TI's system power management business.
'These new flexible hot swap devices give designers peace of mind by following the power curve and guaranteeing the FET is safe, no matter how harsh the operating conditions'.
The TPS2490 and TPS2491 devices' programmable power limiting feature helps make certain the external FET never operates outside its SOA in applied voltage, current and time.
Further reading
Gigabit Ethernet transceiver is flexible interface
A six-channel gigabit Ethernet transceiver provides a full-featured, flexible interface in datacommunications and telecommunications equipment
Bluetooth and FM coexist in harmonious RF chip
The BlueLink 6.0 platform combines the industry's best performance Bluetooth wireless technology with high fidelity FM stereo and mono performance on a single chip
During normal operation, the external FET works with the gate-to-source voltage maximised to provide the lowest possible channel resistance.
During startup and short-circuit events, the gate-to-source voltage is modulated to provide a defined turn-on time and to prevent damage to the external FET.
A timer function limits how long the device will be in power-limit mode.
The power-limit circuitry, which monitors the drain current and drain-to-source voltage of the external FET, computes the power dissipation and controls the gate-to-source voltage to prevent the FET from dissipating power greater than the user-programmed level.
When the drain-to-source voltage of the external FET is low, the circuitry operates in a current-limit mode, preventing the drain current from surpassing the user-programmed level.
TI's new 0.7um LBC-SOI thick copper process focuses state-of-the-art manufacturing technology on the future needs of high voltage power systems and high performance analogue.
The 110V analogue process significantly eases the design process through advanced trench isolation techniques.
The LBC-SOI process allows TI to achieve several competitive advantages, including higher packing density, smaller parasitic capacitances, inherent latch-up immunity and the ability to eliminate substrate currents.
The TPS2490 and TPS2491 are shipping in volume today in lead-free, 10-pin MSOP packages, and are priced at $1.70 per 1000 units.
• Texas Instruments (April 2001-March 2006): contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
•
• Electronicstalk Home Page
Related Business News
Applications/Solutions
High-performance analog ICs provide efficient, compact and dependable solutions for engine management systems, body electronics and comfort systems.
Japan's Kansai Elec sees no boost in energy imports
Tokyo, Sept 5 (Reuters) - Japanese utility Kansai Electric Power Co Inc said on Wednesday it has no plans to boost energy imports or restart its decommissioned thermal plants to cope with an unplanned shutdown of its nuclear unit.
Major Challenges and Issues Facing the...
...Medium-Small Sized Touch Panel Industry. Reportlinker.com announces that a new market research report related to the worldwide components industry is now available to its catalogue.
Smart Sensor Solution for Automotive Electronics Industry by VTI
The new VTI automotive digital accelerometer family has been designed to support the trend towards intelligent integration and smart sensing combined with improved reliability and sophisticated self-test features.
Maxscend Technologies to Showcase Latest DAB/DAB+/DMB...
...Solution at IBC 2007. Maxscend Technologies, a leading mobile DTV chip solution provider, will be showcasing its MXD0120, the DAB/DAB+/DMB demodulator with the lowest power consumption in the industry, as well as being the smallest in size, at the International Broadcasting
Search the Pro-Talk network of sites
