General Description

The MAX17528 comprises 1-phase Quick-PWM™ stepdown VID power-supply controllers for Intel notebook CPUs. 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.

Features

♦ 1-Phase Quick-PWM Controller

♦ ±0.5 VOUT Accuracy Over Line, Load, and Temperature

♦ 7-Bit IMVP-6.5 DAC

♦ IMVP-6.5 and GMCH Compliant

♦ Active Voltage Positioning with Adjustable Gain

♦ Accurate Droop and Current Limit

♦ Remote Output and Ground Sense

♦ Adjustable Output-Voltage Slew Rate

♦ Power-Good Window Comparator

♦ Current Monitor

♦ Temperature Comparator

♦ Drives Large Synchronous Rectifier FETs

♦ 2V to 26V Battery Input Range

♦ Adjustable Switching Frequency (600kHz max)

♦ Undervoltage and Thermal-Fault Protection

♦ Soft-Startup and Soft-Shutdown

♦ Internal Boost Diode

Applications

    IMVP-6.5 Core Power Supply Intel GMCH 2009

    Intel Calpella Platforms

    Graphics Core Power Supply

    Voltage-Positioned Step-Down Converters

    1-to-4 Lithium-Ion (Li+)-Cell Battery-to-CPU Core Supply Converters

    Notebooks/Desktops/Servers