16A High-Performance Quad-Phase Buck Regulator for Multicore CPU and GPU Processors

The MAX77874 is a quad-phase, high-current, step-down buck regulator for CPU and GPU multicore processors. Proprietary IP provides industry-leading transient response, output voltage accuracy, high efficiency, and miniature PCB footprint.

The output voltage is I²C programmable from 0.25V to 1.30V in 5mV steps. Output current capability is 16A. Rotational phase spreading ensures high efficiency and low ripple at light loads with seamless operation across all varying loads. Turbo skip mode combines the same transient response of forced-PWM mode with light load efficiency similar to Skip mode. Soft-start and DVS ramp rates are I²C programmable and controlled through dedicated logic inputs.

The MAX77874 is offered in a 48-bump, 0.35mm pitch WLP array and is specified over the -40°C to +85°C temperature range.

Design Solution: Extend the Run Time of Your Multi-Tasking Smartphone Design ›

Applications

* AI, Machine Vision, Embedded Microprocessors * DSLR, Mirrorless, Action Cameras * Gaming, Drones, Robots, Virtual Reality * Smartphones, Tablets, Ultrabooks

* Operating Range

* VIN: 2.7V to 4.8V

* VOUT: 0.25V to 1.30V in 5mV Steps

* IOUT: Up to 16A

* Fast Load-Transient Response

* 25mV Droop in FPWM and Turbo-Skip Modes

* 40mV Droop in Skip Mode

* Conditions: 3.7VIN, 0.9VOUT, 200mA to 9.2A

* Tight VOUT Accuracy

* 0.28% (max) Initial Accuracy at 0.9VOUT

* 1.5% (max) Over Line/Temperature

* 3mVP-P (typ) Ripple at All Loads

* High Efficiency

* 89% Peak Efficiency at 3.7VIN, 0.9VOUT, 3.5AOUT

* Auto Rotational Phase Spreading at Light Loads

* Flexible Features

* I2C Interface and EN, DVS, Active-Low IRQ Logic Pins

* Programmable Soft-Start and DVS Ramp Rates

* Two Thermal Alarms and POK Interrupts

* Small Solution Size

* 37mm2 Total Area with 2012-Size Inductors

* 41mm2 Total Area with 2016-Size Inductors

* 2.22mm x 2.92mm WLP Package (0.35mm pitch)