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DATASHEET
ISL6617
PWM Doubler with Phase Shedding Function and Output Monitoring Feature
FN7564 Rev 0.00 February 4, 2010
The ISL6617 utilizes Intersil’s proprietary Phase Doubler scheme to modulate two-phase power trains with single PWM input. It doubles the number of phases that Intersil’s multi-phase controllers ISL63xx can support. When the enable pin (EN_PH_SYNC) is pulled low, the PWM input is pulled high. This simplifies the phase shedding implementation for some Intersil controllers (VR10, VR11, VR11.1, and VR12 family) that can disable the respective and higher phase(s) by pulling the respective PWM line high.
The ISL6617 is designed to minimize the number of analog signals that interface between the controller and drivers in high phase count scalable applications.