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The ISL69137 is a digital dual output, flexible multiphase (X+Y ≤ 7) PWM controller designed to be compliant with Intel IMVP8 specifications. The digital multiphase controller can be configured to support any desired phase assignments up to a maximum of seven phases across the two outputs (X and Y). For example, 6+1, 5+2, 4+2, 3+3, 3+2, or even single output operation as a 7+0 configuration supported. ISL69137, with a flexible X+Y ≤ 7 phase assignment, supports SVID interface along with PMBus v1.3 interface, making it ideal for controlling the microprocessor core, memory and system rails per Intel IMVP8 platforms.

The ISL69137 utilizes Intersil’s proprietary digital linear synthetic current modulation scheme to achieve the industry’s best combination of transient response and ease of tuning while addressing the challenges of powering the latest generation of Intel microprocessors. Device configuration and monitoring are accomplished via Intersil’s intuitive PowerNavigator™ GUI. Diode emulation and automatic phase add/drop features allow the user to extract maximum efficiency from the converter regardless of load conditions.

The ISL69137 supports a comprehensive fault management system to enable the design of highly reliable systems. From an overcurrent protection scheme including peak and average detection, to the configurable power-good and catastrophic fault protection flags, any need is accommodated.

With minimal external components, ability to store up to 8 configurations, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.

Key Features

• Advanced linear digital modulation scheme
  • Zero latency synthetic current control for excellent high frequency current balance
  • Auto phase add/drop for excellent load vs efficiency profile
  • Dual edge modulation for faster transient response
  • Excellent DVID performance
• Flexible phase assignment from 0 to 7 phases per output
• Up to 1MHz switching frequency operation for high density designs
• Diode braking for overshoot reduction
• Diode emulation for enhanced light-load efficiency
• Differential remote voltage sensing supports ±0.5% closed-loop system accuracy over load, line and temperature
• Highly accurate current sensing for excellent load line regulation and accurate OCP
  • Supports ISL99227 60A smart power stage
  • Supports DCR sense with integrated temperature compensation
• Supports phase doubler (ISL6617A) for up to 14-phase operation
• Comprehensive fault management enables high reliability systems
  • Pulse-by-pulse phase current limiting
  • Total output current protection
  • Output and input OV/UV protection
  • Open voltage sense detect
  • Black box recording capability for faults
  • Configurable Catastrophic Failure Protection (CFP) flag output
• Intuitive configuration via PowerNavigator™
• SMBus/PMBus v1.3 compatible
  • Up to 2MHz bus interface
  • NVM to store up to eight configurations
• Pb-free (RoHS compliant)

Applications

• Core and memory for Intel IMVP8 based processor
  • High performance servers core or memory rail
  • High performance graphic rail
  • High-end desktop with overclocking option
• Networking, data center, storage, and general purpose