54V, 110A Continuous/140A Peak DC-to-DC μModule Regulator with PMBus Interface

The LTP8813 is a 110A continuous/140A peak step-down power μModule® (micromodule) regulator that provides microprocessor core voltage from a 48V or 54V power distribution system. The LTP8813 features remote configurability and telemetry of power management parameters over PMBus, an open-standard digital interface based on I2C.

The LTP8813 is comprised of a programmable digital control loop with precision mixed-signal circuitry, an EEPROM, power MOSFETs, a planar transformer, inductors, and ancillary components. The LTP8813’s high level of integration minimizes component count and design time and maximizes flexibility and power density.

The LTP8813 preserves high efficiency at high conversion ratios by utilizing a quasi-resonant architecture that reduces high-voltage switching losses.

APPLICATIONS

* Servers, Network, and Storage Equipment

* Automated test equipment (ATE)

* High Efficiency at High Frequency: up to 93.9% Efficiency at VIN = 54V to VOUT = 3.3V

* PMBus-Compliant I2C Serial Interface and Non-Volatile Memory/EEPROM:

* Programming of VOUT, Current Limits,\ Soft-Start/Soft-Stop, Frequency Synchronization And Phasing, Loop Compensation, Warnings, and

Fault Handling

* Telemetry of Voltage, Current, Temperature, and Faults

* Configurable “Black Box” Fault Log Saves up to 15 Records of All Telemetry and Faults