ISL6398IRTZ Advanced Linear EAPP Digital 6-Phase Green PWM Controller for Digital Power Management QFN spot stock

Product Descriptions

The ISL6398 is a smart and smallest 6-Phase Green PWM  controller, designed for networking, datacenter, and POL  applications. It includes programmable functions and  telemetries for easy use and system flexibility using SMBus,  PMBus, or I2C interface, which is designed to program NVM  banks up to 8 different compensations and system  parameters. This minimizes external components and  significantly reduces design complexity and PCB area, and  simplifies the manufacturing process.

The ISL6398 utilizes Intersil’s proprietary Advanced Linear EAPP  (Enhanced Active Pulse Positioning) Digital control scheme to  achieve the extremely fast linear transient response with fewer  output capacitors and overcomes many hurdles of traditional  digital approach, which uses non-linear, discrete control method  for both voltage loop and current balance loop and runs into beat  frequency oscillation and non-linear response. The ISL6398  accurately monitors the load current via the IMON pin and  reports this information via the READ_IOUT register for power  management. The ISL6398 features auto-phase shedding. In low  power operation, the magnetic core and switching losses are  significantly reduced with lower phase count operation, yielding  high efficiency at light load. When APA is triggered, the dropped  phase(s) are added back to sustain heavy load transient  response and efficiency. It optimizes the efficiency from light to  full load for Greener Environment without sacrificing the transient  performance.

Product Features

• SMBus/PMBus/I2C Compatible

-  Programmable IMAX,TMAX, BOOT,and address

-  Programmable soft-start rate and DVID rate

-  Up to 1.5MHz

-  NVM to store up to 8 Configurations with programmable  frequency,droop,auto,faults (OCP, UVP,CFP),etc.

-  No firmware requirement and hassle

• Advanced Linear EAPP Digital control scheme (patented)

-  Digitally programmable compensation

-  Auto phase shedding option for greener environment

-  Variable frequency control during load transients to reduce beat frequency oscillation

-  Linear control with evenly distributed PWM pulses for better phase current balance during load transients

-  Voltage feed-forward and ramp adjustable options

-  High frequency compensation option

-  Active phase adding and dropping for enhanced light load efficiency

• Phase doubler and coupled-inductor compatibility

• Differential remote voltage sensing with ±0.5%accuracy

• Programmable minimum phase count operation

• Programmable slew rate of dynamic VID with dynamic VID compensation (DVC)

• Support 3-state 5V or 3.3V PWM DrMOS and driver

• Zero current shutdown with ISL6627

• Precision resistor or DCR differential current sensing

-  Accurate load-line (Droop)programming and control

-  Accurate current monitoring and channel-current balancing with calibration capability

• True input current sensing for catastrophic failure protection

• Average overcurrent protection and channel current limiting

• High common mode current sense input (VCC-1.5V)

• Open sensing and single point of loop failure protection

• Thermal monitoring and integrated compensation

• 1-to 6-Phase option and up to 2MHz per phase

• Start-up into precharged load

• Pb-free (RoHS Compliant)

• 40 Ld 5x5 Plastic Package

Product Specification

Product Photos

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