54V, 140A DC/DC μModule Regulator with PMBus Interface

The LTP®8802A-1B is a 140A step-down μModule® (micromodule) regulator that provides microprocessor core voltage from a 54V power distribution architecture. It features remote configurability and telemetry monitoring of power management parameters over PMBus, an open standard I2C-based digital interface protocol.

The LTP8802A-1B is comprised of a programmable digital control system with precision mixed-signal circuitry, EEPROM, power MOSFETs, planar transformer, inductors, and supporting components. Its high level of integration minimizes component count and design time and maximizes flexibility and power density.

The LTP8802A-1B preserves high efficiency at high conversion ratios by utilizing a quasi-resonant architecture that reduces high voltage switching losses. The LTP8802A-1B 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 93.8% Efficiency at 813kHz, 54VIN to 3.3VOUT

* 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