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Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies

Dual-Phase Intel IMVP-6+/6.5 CPU Controllers for Montevina/Calpella Platforms

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Single-/Dual-Phase, Quick-PWM Controllers
  • MAX17021 IMVP-6+ (Montevina)
  • MAX17082/MAX17482 IMVP-6.5 (Calpella)
  • ±0.5% VOUT Accuracy Over Line, Load, and Temperature
  • 7-Bit 0 to 1.50V VID Control
  • Dynamic Phase Selection Optimizes Active/Sleep Efficiency
  • Transient Phase Overlap Reduces Output Capacitance
  • Integrated Boost Switches
  • Active Voltage Positioning with Adjustable Gain
  • Programmable 200kHz to 800kHz Switching Frequency
  • Accurate Current Balance and Current Limit
  • Adjustable Slew-Rate Control
  • Power-Good, Clock Enable, and Thermal-Fault Outputs
  • Phase Current Imbalance Fault Output
  • Drives Large Synchronous Rectifier MOSFETs
  • 4V to 26V Battery Input-Voltage Range
  • Undervoltage and Thermal-Fault Protection
  • Overvoltage Protection (MAX17021/MAX17082)
  • Soft-Startup and Soft-Shutdown

Applications/Uses

  • Blade Servers
  • IMVP-6+/IMVP-6.5 Core Supply
  • Multiphase CPU Core Supply
  • Notebook/Desktop Computers
  • Voltage-Positioned, Step-Down Converters

Description

The MAX17021/MAX17082/MAX17482 are 2/1-phase-interleaved Quick-PWM™ step-down VID power-supply controllers for notebook CPUs. True out-of-phase operation reduces input ripple current requirements and output- voltage ripple, while easing component selection and layout difficulties. The Quick-PWM control provides instantaneous response to fast load-current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors.

A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and shutdown, and controlled exit from suspend. A thermistor-based temperature sensor provides a programmable thermal-fault output (active-low VRHOT). A current monitor output (IMON) provides an analog current output proportional to the power consumed by the CPU (MAX17082/MAX17482 only). Output undervoltage, overvoltage (MAX17021/MAX17082 only), and thermal protection shut the controller down when any of these faults are detected. A voltage-regulator power-OK (PWRGD) output indicates the output is in regulation. Additionally, the MAX17021/MAX17082/MAX17482 feature true differential current sense and a phase-good (PHASEGD) output that indicates a phase imbalance fault condition.

The MAX17021 supports the IMVP-6+ specification while the MAX17082/MAX17482 support the IMVP-6.5 requirements. The MAX17021/MAX17082/MAX17482 are available in a 5mm x 5mm, 40-pin TQFN package.

Simplified Block Diagram

MAX17021, MAX17082, MAX17482: Functional Diagram MAX17021, MAX17082, MAX17482: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .