Top

Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

Product Details

Key Features

Simplified Block Diagram

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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Key Features

  • Dual-Phase, Quick-PWM Controllers
  • ±0.75% VOUT Accuracy Over Line, Load, and Temperature (1.3V)
  • Active Voltage Positioning with Adjustable Gain and Offset
  • 5-Bit On-Board DAC
    • Mobile: 0.60V to 1.75V Output Range
    • Desktop: 1.10V to 1.85V Output Range
  • Selectable 100kHz/200kHz/300kHz/550kHz Switching Frequency
  • 4V to 28V Battery Input Voltage Range
  • Adjustable Slew-Rate Control
  • Drive Large Synchronous Rectifier MOSFETs
  • Output Overvoltage Protection (MAX1545 Only)
  • Undervoltage and Thermal-Fault Protection
  • Power Sequencing and Timing
  • Selectable Suspend Voltage (0.675V to 1.45V)
  • Soft-Shutdown
  • Selectable Single- or Dual-Phase Pulse Skipping

Applications/Uses

  • Desktop and Mobile P4 Computers
  • Low-Voltage, Digitally Programmable Power Supplies
  • Multiphase CPU Core Supplies
  • Servers/Desktop Computers
  • Voltage-Positioned Step-Down Converters

Description

The MAX1519/MAX1545 are dual-phase, Quick-PWM™, step-down controllers for desktop and mobile Pentium® 4 (P4) CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The Quick-PWM control scheme provides instantaneous response to fast load-current steps. The MAX1519/MAX1545 include active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output capacitance requirements.

The MAX1519/MAX1545 are intended for two different notebook CPU core applications: stepping down the battery directly or stepping down the 5V system supply to create the core voltage. The single-stage conversion method allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the 5V system supply instead of the battery) at a higher switching frequency provides the minimum possible physical size.

The MAX1519/MAX1545 comply with Intel's P4 specifications. The switching regulator features soft-start, power-up sequencing, and soft-shutdown. The MAX1519/MAX1545 also feature independent four-level logic inputs for setting the suspend voltage (S0-S1).

The MAX1519/MAX1545 include output undervoltage protection (UVP), thermal protection, and voltage regulator power-OK (VROK) output. When any of these protection features detect a fault, the controller shuts down. Additionally, the MAX1519/MAX1545 include overvoltage protection.

The MAX1519/MAX1545 are available in low-profile, 40-pin, 6mm x 6mm thin QFN packages. For other CPU platforms, refer to the pin-to-pin compatible MAX1544 and MAX1532/MAX1546/MAX1547 data sheets.

Simplified Block Diagram

MAX1519, MAX1545: Pin Configuration MAX1519, MAX1545: Pin Configuration 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.