MAX17000

• Complete DDR Supplies: VDDQ, VTT, and VTTR
• V_IN Range: 7V to 20V
• 300kHz Switching Frequency
• Independent Shutdown and Standby Controls
• Overvoltage Protection (OVP)
• Open-Drain, Power-Good Output Signal Indicators (PGOOD1 and PGOOD2)
• Low-Profile Surface-Mount Components
• Fully Assembled and Tested

The MAX17000 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed-circuit board (PCB) that demonstrates the MAX17000 DDR memory power solution. The EV kit provides the regulated voltages required in a complete DDR memory system. The EV kit generates the main memory voltage (VDDQ), the tracking sinking/sourcing termination voltage (VTT), and the reference voltage (VTTR).

The switch-mode power-supply (SMPS) regulator, which operates at 300kHz switching frequency, generates a preset 1.8V VDDQ (OUT) main memory voltage that is capable of sourcing 10A. The termination regulator provides a 0.9V VTT supply that is capable of sinking/sourcing 2A. The termination reference buffer provides a 0.9V VTTR supply that is capable of sinking/sourcing 3mA.

The EV kit requires an input voltage source of 7V to 20V (IN) and a low-power 5V (VDD) biasing supply.

Applications

• DDR, DDR2, and DDR3 Memory Supplies
• Notebook Computers
• SSTL Memory Supplies

• MAX17039:
  • Intel IMVP-7 Serial VID-Compliant 25MHz Interface
  • 0 to 1.5200V Output-Voltage Range
  • 7V to 20V Input-Voltage Range
  • Core CPU SMPS
    • 3-Phase, Fast-Response Interleaved, Quick-PWM
    • Two Internal Drivers + One External Driver (MAX8791)
    • Transient-Suppression Feature
    • 99A Peak Load-Current Capability (33A Each Phase)
    • 350kHz Switching Frequency (per Phase)
  • Core GPU SMPS
    • 1-Phase, Fast-Response Internal Driver Quick-PWM
    • 33A Peak Load-Current Capability
    • 440kHz Switching Frequency
  • Active Voltage Positioning with Adjustable Gain
  • Power-Good (VR__READY) Outputs
  • External Thermal-Fault Detection (Active-Low VR_HOT)
  • Output Current Monitors (IMON_)
  • Overvoltage-, Undervoltage-, and Thermal-Fault Protections
  • 56-Pin Thin QFN Package
• MAX17000:
  • Complete DDR Supplies: VCCDDR, VTTDDR, VTTR
  • 7V to 20V Input-Voltage Range
  • 400kHz Switching Frequency
  • 10A Output Current Capability (VCCDDR)
  • 2A Output Current Capability (VTTDDR)
  • 3mA Output Current Capability (VTTR)
  • Overvoltage Protection
  • Power-Good Output Indicators (D15 and D16)
  • 24-Pin Thin QFN Package
• MAX17007A:
  • I/O Supplies: VTT1 and VTT2
  • 7V to 20V Input-Voltage Range
  • 300kHz Switching Frequency
  • 6A Output Current Capability (VTT1)
  • 21A Output Current Capability (VTT2)
  • Overvoltage-, Undervoltage-, and Thermal-Fault Protections
  • Power-Good Output Indicators (D19 and D20)
  • 28-Pin Thin QFN Package

The MAX17039 evaluation kit (EV kit) demonstrates the high-power, dynamically adjustable, multiphase IMVP-7 notebook application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating two precision, low-voltage CPU/GPU core rails. The EV kit meets the Intel mobile IMVP-7 CPU's transient voltage specification, power-good signaling, voltage regulator thermal monitoring (active-low VR_HOT), power-good outputs (VR__READY), and serial VID communication and control specification. The MAX17039 consists of two high-current SMPSs for the CPU and GPU cores. The CPU regulator is a 3-phase interleaved Quick-PWM™ architecture with one MAX8791 single-synchronous MOSFET driver. The second GPU regulator is also a 1-phase Quick-PWM architecture. The 3-phase CPU core SMPS runs 120° out-of-phase for true interleaved operation, minimizing input capacitance.

Both CPU/GPU output voltages are controlled independently and are dynamically changed through a 3-wire serial VID interface (3-wire SVID: VCLK, VDIO, active-low ALERT), allowing the switching regulators to be individually programmed to different voltages. The EV kit includes active voltage positioning with adjustable gain, reducing power dissipation and bulk output capacitance requirements. A slew-rate controller allows controlled transitions among VID codes, controlled soft-start, and shutdown. SVID also allows each regulator to be individually set into a low-power, pulse-skipping state.

The MAX17039 provides a digitally adjustable 0 to 1.5200V output-voltage range from a 7V to 20V battery-input range. Each phase of the CPU core SMPS is designed for a 20A thermal-design current and delivers up to 33A peak output current for a total of 99A. The 1-phase GPU core SMPS is designed for 20A thermal-design current and delivers up to 33A peak output current. The CPU core SMPS operates at 350kHz switching frequency (per phase) and has superior line- and load-transient response. The GPU core SMPS operates at 440kHz switching frequency relative CPU core SMPS.

The MAX17039 EV kit also evaluates the MAX17000 and MAX17007A DC-DC converters. The EV kit also includes Windows® 2000-, Windows XP®-, and Windows Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX17039.

Applications

• Notebooks/Desktops/Servers
• Voltage-Positioned Step-Down Converters
• VR12/IMVP-7 CPU Core Power Supplies