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

The MAX17033/MAX17034/MAX17434 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 (VRHOT). A current monitor output (IMON) provides an analog current output (MAX17034/ MAX17434 only) proportional to the power consumed by the CPU. Output undervoltage, overvoltage (MAX17033/MAX17034 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 MAX17033/MAX17034 only feature true differential current sense and a phase-good (PHASEGD) output that indicates a phase imbalance fault condition.

The MAX17033 supports the IMVP-6+ specification while the MAX17034/MAX17434 support the IMVP-6.5 requirements. The MAX17033/MAX17034/MAX17434 are available in a lead-free 5mm x 5mm, 40-pin TQFN package

* IMVP-6+/IMVP-6.5 Core Supply

* IMultiphase CPU Core Supply

* IVoltage-Positioned, Step-Down Converters

* INotebook/Desktop Computers

* IBlade Servers

* Single-/Dual-Phase, Quick-PWM Controllers

* MAX17033 IMVP-6+ (Montevina)

* MAX17034/MAX17434 IMVP-6.5 (Calpella)

* ±0.5mV 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

* Transient-Overshoot-Suppression Feature

* Integrated Boost Switches

* Active Voltage Positioning with Adjustable Gain