The UCD90124 is a 12-channel sequencer and system health manager with a fan control and multiphase PWM clock generator. It provides a built-in temperature control algorithm that automatically adjusts fan speed based on five configurable temperature zones. The device generates up to eight clocks with configurable frequencies from 15.259 kHz to 125 MHz and phase shift from 0 to 360.
The sequencer features power supply margining and nonvolatile error logging. An auto-calibrate function automatically determines the turn-on, turn-off, and maximum duty cycle for the fan. The device includes a free downloadable Fusion Digital Power Designer GUI to configure the device via a PMBus or I2 C interface. ($6.45 ea/1,000 available now.)
Texas Instruments , Dallas , TX
Product Information Center 800-477-8924
http://www.ti.com
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