ISL6244 Datasheet (Intersil Corporation) - Multi-Phase PWM Controller

ISL6244, Multi-Phase PWM Controller

ISL6244CR (32 LEAD QFN 5x5) IOUT The current carried out of this pin is proportional to output current and can be used to incorporate output voltage droop and/or load sharing.

The scale factor is set by the ratio of the ISEN resistors and the lower MOSFET rDS(ON).

If droop is desired, connect this

® ISL6244 Data Sheet November 2003 FN9106.1 Multi-Phase PWM Controller The ISL6244 provides core-voltage regulation by driving 2 to 4 interleaved synchronous-rectified buck-converter channels in parallel.

Interleaving the channel timing results in increased ripple frequency which reduces input and output ripple currents.

The reduction in ripple results in lower component cost, reduced dissipation, and a smaller implementation area.

The ISL6244 uses cost and space-saving rDS(ON) sensing for cha

ISL6244 Features

* of this controller IC include Dynamic VIDTM technology allowing seamless on-the-fly VID changing without the need of any external components. Battery “feed-forward” is provided to allow for traditional control schemes over total input voltage variation. Output voltage “droop” or active voltage posit