INTERSIL ISL6364ACRZ ISL6364A QFN Dual 4-Phase + 1-Phase PWM Controller IC Chip


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SKU: 111900334166 Category:


The ISL6364A is a dual PWM controller; its 4-phase PWMscontrol the microprocessor core or the memory voltageregulator, while its single-phase PWM controls the peripheralvoltage regulator for graphics, system agent, or processor I/O.

The ISL6364A utilizes Intersil’s proprietary Enhanced ActivePulse Positioning (EAPP) modulation scheme to achieveextremely fast transient response with fewer output capacitors.

The ISL6364A is designed to be compliant to Intel VR12/IMVP7specifications. It accurately monitors the load current via theIMON pin and reports this information via the IOUT register tothe microprocessor, which sends a PSI# signal to the controllerat low power mode via SVID bus. The controller enters 1 or2-phase operation in low power mode (PSI1); in the ultra lowpower mode (PSI2,3), it operates in single phase with diodeemulation option. In low power modes, the magnetic core andswitching losses are significantly reduced, yielding highefficiency at light load. After the PSI# signal is de-asserted, thedropped phase(s) are added back to sustain heavy loadtransient response and efficiency. In addition, the ISL6364Afeatures auto-phase shedding to optimize the efficiency fromlight to full load for Greener Environment without sacrificingthe transient performance.

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