Controller IC Chip - ISL62883 HRTZ QFN-40
Multiphase PWM Regulator Controller IC Power Chip - ISL62883 HRTZ QFN-40
Part number: | ISL62883 | Pin: | QFN-40 | ||
Part type: | Multiphase PWM Regulator Controller IC Chip | Κατάσταση: | Καινούργιο | ||
Revision: | Εγγύηση: | Χωρίς Εγγύηση |
Συμβατά P/N & μοντέλα:
ISL62883
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) technology™. Compared with
traditional modulators, the R3™ 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-6.5™ 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
mode. It reports the regulator output current through the IMON
pin. It senses the current by using either a discrete resistor or
inductor DCR whose variation over temperature can be
thermally compensated by a single NTC thermistor. It uses
differential remote voltage sensing to accurately regulate the
processor die voltage. The adaptive body diode conduction
time reduction function minimizes the body diode conduction
loss in diode emulation mode. User-selectable overshoot
reduction function offers an option to aggressively reduce the
output capacitors as well as the option to disable it for users
concerned about increased system thermal stress. In 2-Phase
configuration, the ISL62883 offers the FB2 function to
optimize 1-Phase performance.
The ISL62883B has the same functions as the ISL62883, but
comes in a different package.