Product category:
Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2006-) | Subject: UCD9111, UCD9112, UCD7230 and UCD9080
Edited by the Electronicstalk Editorial
Team on 15 September 2006
Power controllers promise digital
precision
Four new Fusion Digital Power products enable point-of-load digital power management in telecomms and data-centric applications.
Texas Instruments has introduced four new Fusion Digital Power products that enable point-of-load digital power management in telecomms and data-centric applications TI plans to demonstrate several innovative digital power platforms, including its new configurable, dual-phase synchronous buck controller, at the Digital Power Forum in Dallas, from 18th to 20th September 2006
This article was originally published on Electronicstalk on 4 Apr 2006 at 8.00am (UK)
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TI's single-phase UCD9111 and dual-phase UCD9112 controllers implement digital pulsewidth modulators (PWM) with 175ps resolution, and are fully configurable via a graphical user interface (GUI) for monitoring, control and management for point-of-load power conversion - without the need to write a single line of software.
GUI configuration allows a designer to intelligently manage the power supply's voltage and current thresholds and response, soft start, margining, loop compensation and many other features.
The UCD9111 and UCD9112 incorporate a control law accelerator peripheral, which performs full-digital loop control while supporting switching frequencies of up to 2MHz.
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The controllers' architecture is optimised to deliver high power performance with unique functionality, such as differential voltage feedback for common mode rejection and 175ps PWM resolution to support wide input to output voltage ratios at high switching frequencies without limiting the output resolution.
Additionally, the UCD9111 and UCD9112 devices support up to 80 PMBus interface commands for control, configuration and management of the power supply, while requiring a minimal supply current as low as 7mA during normal operation.
To support the microcontroller-based UCD9111 and UCD9112 devices and previously announced TMS320F28x line of digital signal processor-based controllers, TI today introduced the UCD7230 2MHz synchronous buck driver with high and low side 4A drivers and an integrated 3.3V linear regulator.
The UCD7230 also incorporates cycle-by-cycle current limit and a low offset current sense amplifier to provide average inductor-current information to the controller.
In a dual-phase configuration, the current measurement enables the driver to perform current-balancing of the two phases to achieve higher efficiency and increased system reliability.
Together, the UCD7230 driver and digital power controller allows a digital power designer to minimise the number of external components required to construct a fully digital DC/DC convertor.
Starting Monday at the Digital Power Forum, TI will showcase several innovative digitally controlled solutions for power applications.
In addition to a dual-phase, synch buck EVM featuring the UCD9112 and UCD7230, TI will demonstrate its new GUI-configurable UCD9080 eight-rail power manager for sequencing and monitoring a power supply.
TI provides a broad portfolio of digital power integrated circuits that enable digitally controlled power systems with high system intelligence and performance in an easy-to-use, intuitive development environment.
From its Fusion Digital Power series of UCD9K, UCD8K and UCD7K controllers and power supply drivers, to the high-performance, DSP-based F28x controllers, TI's digital power solutions are optimised for applications ranging from point-of-load to high-power AC/DC conversion.
Samples of TI's UCD9111 and UCD9112 digital power controllers will be available in 32-pin QFN packages in the fourth quarter of 2006.
Suggested resale pricing for the devices in quantities of 1000 units is US $2.95 for the UCD9111 and $3.35 for the UCD9112.
The UCD7230 is sampling in a 20-pin QFN package with a suggested resale price of $0.80 in quantities of 1000 units.
The UCD9080 is sampling in a 32-pin QFN package and has a suggested resale price of $2.95 in 1000 units.
Volume production for all four products is expected in first quarter of 2007.
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