Product category:
Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS5461x
Edited by the Electronicstalk Editorial
Team on 15 August 2001
Convertors swiften PSU design cycles
Texas Instruments has released a series of high-performance synchronous-buck DC/DC convertors that enable designers to quickly develop a power supply with as few as six external components.
Texas Instruments has released a series of high-performance synchronous-buck DC/DC convertors that enable designers to quickly develop a power supply with as few as six external components The new synchronous DC/DC convertors with internal 12A mosfet switches are capable of supplying greater than 6A of continuous output current over the entire operating temperature range and operate over a 3.0 to 6.0V input voltage range
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
Related stories
Data buffer has dual multiplexer
Texas Instruments has introduced the industry's first 0- to 4-Gbps data buffer/signal conditioner with a dual multiplexer.
Reference design for wireless optical comms
A new technology from Texas Instruments dramatically cuts the cost and complexity of bringing the high-speed datarates of optical networking to end users.
By integrating power mosfets in a synchronous-buck configuration, the devices are capable of up to 95% efficiency and are well suited for powering point-of-load DSP, FPGA and microcontroller applications, notebook PCs, networking and optical communications systems, and low-voltage high-density distributed power systems.
The TPS5461x SWIFT (switcher with integrated FET technology) DC/DC convertors save development effort not only with the integration of power FETs and compensation circuitry, but also with an interactive software development tool that aids the selection of external components.
The development tool provides a bill of materials, reference schematic, loop response graphs and an efficiency curve based on the designer's inputs.
Further reading
TI adds low-cost and high-integration DSP pair
Texas Instruments has unveiled the latest pair of programmable DSPs in its ultra-power-efficient TMS320C55x family of digital signal processors.
Triple-output power modules shrink ADSL designs
Texas Instruments has unveiled two new triple-output plug-in power solutions for asymmetric digital subscriber line (ADSL) applications.
Advanced TDMA technology to boost cable bandwidth
Texas Instruments has unveiled its new technology featuring end-to-end advanced TDMA that will enable a 50% increase in upstream plant capacity.
External inductors and capacitors are chosen from the tool's database of components (users can also add their favourite components to the database).
The TPS5461x devices offer a high output current in a small space while providing integrated protection features, such as power good, overcurrent protection, thermal shutdown and undervoltage lockout.
An integrated synchronous rectifier and a low 30mohm on-resistance of the power mosfets enable the device to achieve efficiencies greater than 95%.
To address an application's switching noise sensitivity, the switching frequency can be one of two preset values or adjusted anywhere between 280 and 700kHz.
Additionally, excellent heat transfer resulting from TI's PowerPAD package enables up to three times the thermal performance of other packaging without the need for bulky heatsinks.
An externally compensated option is also available, which adds flexibility for adjusting the output voltages or customising loop response characteristics to the specific needs of the application.
Fixed or adjustable output voltage versions are available down to 0.9V with 2.0% total accuracy.
The SWIFT software development tool is available for free and can be downloaded from TI's power management web site power.ti.com.
A CD-ROM version is also available.
To further help system developers with designing power supply solutions, TI is offering evaluation modules, reference designs and other support collateral.
The TPS5461x DC/DC convertors will be available in September from TI and its authorised distributors.
The devices are packaged in 28-pin PowerPAD thin shrink small outline packages (6.4m x 9.7mm) for thermal enhancement and space savings.
Suggested resale pricing is $4.99 each in quantities of 1000.
Adding to the SWIFT family of DC/DC convertors, a 3A 20-pin TSSOP version is planned for volume production in October 2001 with samples available now.
The device incorporates the same features and voltage options as the TPS5461x 6-A version and is supported by the software tool.
• 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
Search the Pro-Talk network of sites
