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ISL6566CRZAR5184

Three-Phase Buck PWM Controller with Integrated MOSFET Drivers for VRM9, VRM10, and AMD Hammer Applications

Manufacturer:

Renesas Electronics Corporation
Mfr.Part #:

ISL6566CRZAR5184
Datasheet:

ISL6566CRZAR5184 Datasheet (PDF)
Applications:

Controller, Intel VRM9, VRM10, AMD Hammer Applications
Voltage - Input:

3V ~ 12V
Number of Outputs:

1
Voltage - Output:

0.8V ~ 1.6V
EDA/CAD Models:

Request Free CAD Models for ISL6566CRZAR5184

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ISL6566CRZAR5184 General Description

Support is limited to customers who have already adopted these products.

The ISL6566 three-phase PWM control IC provides a precision voltage regulation system for advanced microprocessors. The integration of power MOSFET drivers into the controller IC marks a departure from the separate PWM controller and driver configuration of previous multiphase product families. By reducing the number of external parts, this integration is optimized for a cost and space saving power management solution. Outstanding features of this controller IC include programmable VID codes compatible with Intel VRM9, VRM10, as well as AMD Hammer microprocessors. A unity gain, differential amplifier is provided for remote voltage sensing, compensating for any potential difference between remote and local grounds. The output voltage can also be positively or negatively offset through the use of a single external resistor. A unique feature of the ISL6566 is the combined use of both DCR and r_DS(ON) current sensing. Load line voltage positioning (droop) and overcurrent protection are accomplished through continuous inductor DCR current sensing, while r_DS(ON) current sensing is used for accurate channel-current balance. Using both methods of current sampling utilizes the best advantages of each technique. Protection features of this controller IC include a set of sophisticated overvoltage, undervoltage, and overcurrent protection. Overvoltage results in the converter turning the lower MOSFETs ON to clamp the rising output voltage and protect the microprocessor. The overcurrent protection level is set through a single external resistor. Furthermore, the ISL6566 includes protection against an open circuit on the remote sensing inputs. Combined, these features provide advanced protection for the microprocessor and power system.

Key Features

Integrated Multi-Phase Power Conversion
1, 2, or 3-Phase Operation
Precision Core Voltage Regulation
Differential Remote Voltage Sensing
±0.5% System Accuracy Over Temperature
Adjustable Reference-Voltage Offset
Precision Channel Current Sharing
Uses Loss-Less r_DS(ON) Current Sampling
Accurate Load Line Programming
Uses Loss-Less Inductor DCR Current Sampling
Variable Gate Drive Bias: 5V to 12V
Microprocessor Voltage Identification Inputs
Up to a 6-Bit DAC
Selectable between Intel's VRM9, VRM10, or AMD Hammer DAC codes
Dynamic VID Technology
Overcurrent Protection
Multi-tiered Overvoltage Protection
Digital Soft-Start
Selectable Operation Frequency up to 1.5MHz Per Phase
Pb-Free Plus Anneal Available (RoHS Compliant)

Specifications

Series	-	Applications	Controller, Intel VRM9, VRM10, AMD Hammer Applications
Voltage - Input	3V ~ 12V	Number of Outputs	1
Voltage - Output	0.8V ~ 1.6V	Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount	Base Product Number	ISL6566