ISL6364IRZ Intersil, ISL6364IRZ Datasheet

ISL6364IRZ

Manufacturer Part Number

ISL6364IRZ

Description

VR12 4+1 PWM Controller P6, 48ld 6x6 QFN

Manufacturer

Intersil

Datasheet

1.ISL6364CRZ.pdf (44 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL6364IRZ

Manufacturer:

INTERSIL

Quantity:

20 000

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Dual 4-Phase + 1-Phase PWM Controller for VR12/IMVP7

Applications

ISL6364

The ISL6364 is a dual PWM controller; its 4-phase PWMs control

the microprocessor core or the memory voltage regulator, while

its single-phase PWM controls the peripheral voltage regulator

for graphics, system agent, or processor I/O.

The ISL6364 utilizes Intersil’s proprietary Enhanced Active Pulse

Positioning (EAPP) modulation scheme to achieve the extremely

fast transient response with fewer output capacitors.

The ISL6364 is designed to be compliant to Intel VR12/IMVP7

specifications. It accurately monitors the load current via the

IMON pin and reports this information via the IOUT register to

the microprocessor, which sends a PSI# signal to the controller

at low power mode via SVID bus. The controller enters 1- or

2-phase operation in low power mode (PSI1); in the ultra low

power mode (PSI2,3), it can further drop the number of phases

and then enable the diode emulation of the operational phase.

In low power modes, the magnetic core and switching losses are

significantly reduced, yielding high efficiency at light load. After

the PSI# signal is de-asserted, the dropped phase(s) are added

back to sustain heavy load transient response and efficiency.

Today’s microprocessors require a tightly regulated output voltage

position versus load current (droop). The ISL6364 senses the

output current continuously by measuring the voltage across the

dedicated current sense resistor or the DCR of the output

inductor. The sensed current flows out of the FB pin to develop the

precision voltage drop across the feedback resistor for droop

control. Current sensing circuits also provide the needed signals

for channel-current balancing, average overcurrent protection and

individual phase current limiting. The TM and TMS pins are to

sense an NTC thermistor’s temperature, which is internally

digitized for thermal monitoring and for integrated thermal

compensation of the current sense elements of the respective

regulator.

The ISL6364 features remote voltage sensing and completely

eliminates any potential difference between remote and local

grounds. This improves regulation and protection accuracy. The

threshold-sensitive enable input is available to accurately

coordinate the start-up of the ISL6364 with other voltage rails.

December 22, 2010

FN6861.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

Features

• Intel VR12/IMVP7 Compliant

• Intersil’s Proprietary Enhanced Active Pulse Positioning

• Dual Outputs

• Proprietary Active Phase Adding and Dropping with Diode

• Programmable Slew Rate of Fast Dynamic VID for VR0

• Dynamic VID Compensation (DVS) for VR1 at No Droop

• Droop and Diode Emulation Options

• Programmable 1 or 2-Phase Operation in PSI1/2/3 Mode

• Programmable Standard or Coupled-Inductor Operation

• Precision Resistor or DCR Differential Current Sensing

• Average Overcurrent Protection and Channel Current Limit

• Precision Overcurrent Protection on IMON & IMONS Pins

• Independent Oscillators, up to 1MHz Per Phase, for Cost,

• Dual Thermal Monitoring and Thermal Compensation

• Start-up Into Pre-Charged Load

• Pb-Free (RoHS Compliant)

- SerialVID with Programmable IMAX, TMAX, BOOT,

(EAPP) Modulation Scheme, Patented

- Voltage Feed-forward and Ramp Adjustable Options

- High Frequency and PSI Compensation Options

- Variable Frequency Control During Load Transients to

- Linear Control with Evenly Distributed PWM Pulses for

- Output 1 (VR0): 1 to 4-Phase, Coupled Inductor

- Output 2 (VR1): Single Phase for Graphics, System Agent,

- Differential Remote Voltage Sensing

- ±0.5% Closed-loop System Accuracy Over Load, Line and

- Phase Doubler Compatibility (NOT Phase Dropping)

Emulation Scheme For Enhanced Light Load Efficiency

- Integrated Programmable Current Sense Resistors

- Integrated Thermal Compensation

- Accurate Load-Line (Droop) Programming

- Accurate Channel-Current Balancing

- Accurate Current Monitoring

With Internal Current Comparators

Efficiency, and Performance Optimization

ADDRESS OFFSET Registers

Reduce Beat Frequency Oscillation

Better Phase Current Balance During Load Transients

Compatibility, for Core or Memory

or Processor I/O

Temperature

All other trademarks mentioned are the property of their respective owners.

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