Philips Electronics Australia Ltd

Philips Electronics Australia Ltd
Philips Hse
65 Epping Rd
North Ryde NSW 2113
Tel: 02 9947 0000
Fax: 02 9947 0580

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‘Smart’ single-chip fan manager

PHILIPS Electronics has introduced the P82CF201, a single-chip, dual fan manager.

Using a resistor to sense fan presence, the new dual fan manager intelligently adjusts fan speed according to temperature using efficient pulse-width modulation (PWM) rather than continuously running a system's fan at maximum speed.

This frees the system processor from fan control duties, improving overall system efficiency and reliability.

Designed to optimise fan efficiency, the P82CF201 is ideal for telecommunications, server and consumer applications especially where low noise levels and high reliability are important.

This device enables designers to use two-wire fans, eliminating the need to purchase the more expensive three-wire fans, which results in a cost saving of 30 percent.

The user can choose to start the fan at a predetermined temperature or constantly cool the system at low noise and low fan speed. Additionally, the fan speed increases linearly as system temperature rises, resulting in a reduction in system noise and an increase in the life of the fan.

Using a resistor to sense the fan presence, the P82CF201 detects the fan-fault condition and protects against fan failure during operation. In addition, when one of the fans fail, the other fan will be turned to maximum speed, cooling the system while the failed fan gets replaced.

The devices have a built-in watchdog device that self-resets after the fault condition is cleared, avoiding a complete system reset.

The family of devices offers complete thermal protection in a variety of temperature-sensitive electronics, freeing system processors from fan control duties, thereby saving costs, and maximising overall system efficiency and reliability.

The P82CF201 is in volume sampling now. Samples are available worldwide upon request.

Philips Electronics Australia Ltd News

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