DATASHEET
ISL62883, ISL62883B FN6891
Rev 4.00
June 21, 2011 Multiphase PWM Regulator for IMVP-6.5в„ў Mobile CPUs
The ISL62883 is a multiphase PWM buck regulator for
miroprocessor core power supply. The multiphase buck converter
uses interleaved phase to reduce the total output voltage ripple
with each phase carrying a portion of the total load current,
providing better system performance, superior thermal
management, lower component cost, reduced power dissipation,
and smaller implementation area. The ISL62883 uses two
integrated gate drivers and an external gate driver to provide a
complete solution. The PWM modulator is based on Intersil's
Robust Ripple Regulator (R3) technologyв„ў. Compared with
traditional modulators, the R3в„ў modulator commands variable
switching frequency during load transients, achieving faster
transient response. With the same modulator, the switching
frequency is reduced at light load, increasing the regulator
efficiency.
The ISL62883 is fully compliant with IMVP-6.5в„ў specifications. It
responds to PSI# and DPRSLPVR signals by adding or dropping
PWM3 and Phase-2 respectively, adjusting overcurrent protection
threshold accordingly, and entering/exiting diode emulation …
