ISL62883CHRTZ

The ISL62883C enters 1-phase DE mode for DPRSLPVR = 1 by dropping phase 2 and reduces the overcurrent and the way-overcurrent protection levels to 1/3 of the initial values. In 2-phase configuration, the ISL62883C enters 1-phase CCM for (PSI# = 0 and DPRSLPVR = 0). It drops phase 2 and reduces the overcurrent and the way-overcurrent protection levels to 1/2 of the initial values. The ISL62883C enters 1-phase DE mode for DPRSLPVR = 1 by dropping phase 2 and reduces the overcurrent and the way-overcurrent protection levels to 1/3 of the initial values. In 1-phase configuration, the ISL62883C does not change the operational mode when the PSI# signal changes status. It enters 1-phase DE mode when DLPRSLPVR = 1. When configured for CPU VR application, the ISL62883C responds to VID changes by slewing to the new voltage at 5mV/µs slew rate. As the output approaches the VID command voltage, the dv/dt moderates to prevent overshoot. In the ISL62883C, the operational modes and slew rates are determined by the configuration of PSI# and DPRSLPVR signals. Different configurations result in different operational modes and slew rates for the ISL62883C.

The PWM modulator of the ISL62883C is based on Intersil's Robust Ripple Regulator (R3) technology™.

The ISL62883C offers programmable 1, 2- or 3-Phase CPU or GPU Mode of Operation and precision multiphase core voltage regulation with 0.5% system accuracy over-temperature. It provides a current monitor function through the IMON pin, which outputs a high-speed analog current source that is 3 times the droop current flowing out of the FB pin. The IMON pin voltage range is 0V to 1.1V, and a clamp circuit prevents the voltage from exceeding 1.1V. The ISL62883C can sense inductor current through DCR or resistors, with capacitor Cn voltage representing the total currents. It has features like adaptive body diode conduction time reduction, user-selectable overshoot reduction function, and fast-overcurrent protection for short-circuit protections. The controller also monitors ISEN pin voltages for current-balance protection and has various fault protections like undervoltage, overvoltage, and current-balance protection.