Fairchild Semiconductor Unveils FAN5230 and FAN5231 Chip Set
Fairchild Semiconductor (San Jose, CA) unveiled the FAN5230 and FAN5231 chip set, a new chip set designed to convert notebook PC battery/power adapter voltage to all of the different voltages required for the processor, chip set, memory, disk drives and I/O circuitry.
The FAN5231 combines two PWM controllers to provide 0.925V to 2V at over 15A to power the microprocessor core and 1.5V at over 2A to power the microprocessor I/O. A 5-bit digital-to-analog converter sets the core output voltage and conforms to the Intel Mobile VID specification. A linear regulator also provides 2.5V at up to 150mA to power the microprocessor clock.
The second part in the chip set, the FAN5230, integrates three pulse-width modulated switching regulator controllers to provide 3.3V and 5V at over 5A each and 12V at 120mA. Two integrated linear regulators provide stand-by always-on power at 3.3V and 5V at 50mA.
These new devices are the result of the previously announced joint development agreement between Fairchild Semiconductor and Intersil Corp. (Irvine, CA). Intersil offers a second source for both parts. The Intersil version of the FAN5231 is the IPM6210; the Intersil version of the FAN5230 is the IPM6220.
Pricing for the FAN5230 is $3.25 in 1,000-piece quantities. The FAN5231 costs $3.30 in 1,000-piece quantities. Both devices are currently available, with delivery in seven to eight weeks ARO.
