The LTP™8800-4A is a 200A step-down μModule® regulator that provides microprocessor core voltage from 54V power distribution architecture. LTP8800-4A features remote configurability and telemetry monitoring of power management parameters over PMBus—an open standard I2C-based digital interface protocol. The LTP8800-4A is comprised of a programmable digital control system with precision mixed-signal circuitry, EEPROM, power MOSFETs, planar transformer, inductors, and supporting components. LTP8800-4A high level of integration minimizes component count and design time and maximizes flexibility and power density. The LTP8800-4A preserves high efficiency at high conversion ratios by utilizing a resonant switching architecture that eliminates high voltage switching losses. The LTP8800-4A is available in a 22mm × 24mm × 22mm surface mounted open frame package. Applications * High Current Distributed Power Systems * Servers, Network, and Storage Equipment * Intelligent Energy Efficient Power Regulation * High Efficiency at High Frequency * Up to 90.5% Efficiency at 550kHz, 54VIN to 0.8VOUT * PMBus-Compliant I2C Serial Interface * Monitor Voltage, Current, Temperature and Faults * Internal EEPROM Fault Log Record * Digitally Programmable Control Loop * Program Voltage, Current Limits, Soft-Start/Soft-Stop, Frequency, Synchronization and Phasing, Power-Good, Warnings and Faults