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Reviewing Recent Developments in Digital Control
The past year witnessed significant new product releases, technological developments, and industry news related to the field of Digital Control.
In June of 2011, Freescale Semiconductor announced the first family in its next-generation digital signal controller (DSC) portfolio, the MC56F84xx, which integrates high-speed analog functionality with an efficient 32-bit digital signal processor core to provide precise and accurate digital control for power supplies (digital power conversion) and motors. The MC56F84xx family’s performance, precision, accuracy and control capabilities help increase system stability for these types of applications.
Increased system stability for motor control applications results in motors that run more efficiently and quietly (in a dishwasher or other appliance, for example). The benefits of increased system stability for power supplies include reduced energy waste and heat. When less heat is generated, designers can reduce costs and system size. For example, a server room with power supplies that generate less heat requires less energy for cooling, and circuit board designs that have less heat to dissipate can be smaller (improved power density), reducing system size and cost and allowing "miniaturization" of the application.
The full story can be found here http://powerpulse.net/story.php?storyID=24199
In July, Darnell reported exclusively from Techno Frontier in Japan. Digital power conversion and digital power management were demonstrated during a special "Digital Power Supply Control" session at Techno Frontier.
Cosel used the just-released CHS series of regulated bus converters to demonstrate several benefits of digital control. These converters deliver 80W with 93% efficiency from a sixteenth-brick format and 200W with 94% efficiency from an eighth-brick format. These bus converters employ Cosel’s "digital assisted control" to combine the benefits of fast analog control with the flexibility and component count reduction enabled by microprocessor-based digital control.
As a result of employing digital control, the CHS series features a 15% reduction in components compared with the previous-generation CES family and a 4% increase in efficiency. In addition, the new units have a flatter efficiency curve for improved light-load operation. The new bus converters along with a family of point-of-load regulators (POLs) are being targeted at intermediate bus architecture (IBA) applications.
The full story can be found here http://powerpulse.net/story.php?storyID=24350
In September, International Rectifier (IR) introduced a new digital power platform that the company says dramatically improves energy efficiency in a wide variety of applications, including high performance server, desktop and computing applications.
The new family of digital controllers is based on CHiL Semiconductor’s digital platform offering full telemetry and programmability, providing system designers a chance to differentiate their products with custom features. The family offers a fully compliant high speed serial bus to meet new industrial requirements. These 5, 6 and 8-phase dual output PWM controllers, in which phases are flexibly assigned between loops 1 and 2, can be easily configured for Intel® VR12, AMD® SVI/PVI/G34, and feature switching frequency between 200 kHz to 1.2 MHz per phase.
The full story can be found here http://powerpulse.net/story.php?storyID=24614