Andigilog Expands Intelligent PC Fan Driver Family to Add Industry's First Closed-Loop Control Around Fan Speed and Temperature.Andigilog's aMC8510 and aMC8520 Provide More Reliability, Lower Power Consumption and Better Acoustic Management for DC Brushless Fan Cooling Solutions BEIJING -- Andigilog([R]), the fabless semiconductor company A fabless semiconductor company specializes in the design and sale of hardware devices implemented on semiconductor chips. It achieves an advantage by outsourcing the fabrication of the devices to a specialized semiconductor manufacturer called a semiconductor foundry or "fab. providing intelligent thermal management solutions, has expanded its product line with two new products. The aMC8520 is the first device in the industry to provide closed-loop speed control with thermal temperature compensation in a single device without the use of microcode A set of elementary instructions in a complex instruction set computer (CISC). The microcode resides in a separate high-speed memory and functions as a translation layer between the machine instructions and the circuit level of the computer. . It provides a highly integrated solution for fans that run more quietly and reliably, increasingly important requirements in the PC market. For PC applications as well as communications, consumer electronic and industrial systems requiring open loop performance, the Andigilog aMC8510 uniquely offers both analog and digital speed control of DC brushless fans to address the critical issues of managing system temperature, fan noise and power consumption. DC brushless fans using this device now can be run more efficiently due to intelligent speed management over the complete duty cycle, allowing the system to run cooler with less power and less noise. "Power, reliability and acoustics acoustics (ək  `stĭks) [Gr.,=the facts about hearing], the science of sound, including its production, propagation, and effects. continue to present
challenges for designers and users of fans in applications in computing,
consumer, communication and industrial areas," noted Susie Inouye,
research director and principal analyst at Databeans.
"Andigilog's new intelligent fan controllers provide
much-needed solutions to address these challenges."
Both new devices include Andigilog's QuietStart[TM] technology, which manages acoustic noise Acoustic noise Unwanted sound. Noise control is the process of obtaining an acceptable noise environment for people in different situations. Understanding noise and its control requires a knowledge of the major sources of noise, sound propagation, human at fan start-up and while the fan runs. This technology saves power and improves reliability by eliminating current surges in the system. The new devices also reduce the bill of materials The list of components that make up a system. For example, a bill of materials for a house would include the cement block, lumber, shingles, doors, windows, plumbing, electric, heating and so on. for fans by combining analog and digital speed control inputs through a single pin. "Andigilog's innovative solutions for thermal management already are helping PC makers solve critical processor-based cooling issues," said Bill Sheppard, CEO (1) (Chief Executive Officer) The highest individual in command of an organization. Typically the president of the company, the CEO reports to the Chairman of the Board. , Andigilog. "Our unique new devices give PC makers more ways to manage heat effectively while improving performance, reducing ambient noise and reducing power consumption." Features The aMC8520, a single-phase, closed-loop fan pre-driver, provides all required functions to implement closed-loop control of fan speed. The device is the industry's first to offer digital fan speed signal control with temperature sensor measurement compensation without the use of microcode. With these functions integrated in a single device, the bill of materials cost and component count can be reduced while improving performance, reliability and power savings. The benefit of a closed loop system to a thermal management system designer is that, regardless of the characteristics of the fan, the fan speed output will be linear across the operating range. With the inclusion of temperature compensation, fans built around the aMC8520 will be quieter and run more efficiently than standard fan controller systems. Other features include: * Andigilog's proprietary QuietStart[TM] Technology that guarantees the fan will start with a slow, gradual acceleration for minimizing acoustic impact and minimizing power usage * Integrated fault timer with auto start See autostart. retry re·try tr.v. re·tried , re·try·ing, re·tries To try again. Verb 1. retry - hear or try a court case anew rehear provides built-in support for detecting and attempting to remove fan blockages without additional components * Programmable minimum speed setting for continuous thermal management * Support for high voltage The term high voltage characterizes electrical circuits, in which the voltage used is the cause of particular safety concerns and insulation requirements. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X-rays and particle beams, to motors (12V and above) to address the high-performance requirements for servers, communications and industrial systems * Current limit, under voltage lockout lockout, intentional closing up of a company, factory, or shop by an employer to prevent employees from working during a strike or labor dispute. The term lockout and thermal shutdown protection, which help improve system safety and reliability The aMC8510, a single-phase, open-loop fan pre-driver, provides all required functions to implement open-loop fan speed control. It offers the system designer a direct PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a input, which eliminates the need to convert the PWM speed control input from the host computer to a linear control voltage and reduces parts needed for the fan hub. In addition to these features, including QuietStart Technology, the aMC8510 has a selectable speed control slope function that enables the device to work within multiple system architectures. It also has a pinned-out 3.5 volt volt [for Alessandro Volta], abbr. V, unit of electric potential and electromotive force. It is defined as the difference of electric potential existing across the ends of a conductor carrying a constant current of 1 ampere when the power dissipated is 1 watt. reference for system stability. Pricing and Availability The aMC8510 and aMC8520 controllers are available in environmentally-friendly RoHS-compliant and Pb-free matte SN lead finish packaging. General samples and an evaluation kit including a tuning board are available now with production planned for Q3 2007. The aMC8510 is priced at $1.50 per unit U.S. in 1K unit quantities. The aMC8520 is priced at $2.00 per unit U.S. in 1K unit quantities. For more details, please go to www.andigilog.com. About Andigilog Andigilog is the fabless analog and mixed-signal semiconductor company providing Intelligent Thermal Management solutions with its unique ThermalEdge[TM] technology and complementary components that make systems perform optimally and with less noise. Its customers include PC, cellphone (CELLular telePHONE) The first ubiquitous wireless telephone. Originally analog, all new cellular systems are digital, which has enabled the cellphone to turn into a smartphone that has access to the Internet. , consumer electronics and embedded systems Embedded systems Computer systems that cannot be programmed by the user because they are preprogrammed for a specific task and are buried within the equipment they serve. makers. For samples or more information about Andigilog and its products, go to www.andigilog.com. Trademarks and brands are the property of their respective owners. |
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