DESCRIPTION

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.

FEATURES

- 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

- Wide Input Voltage Range: 45V to 65V

- Output Voltage Range: 0.5V to 1.1V

- ±0.5 Maximum DC Output Error with Differential

Remote Voltage Sense

- ±3 Current Readback Accuracy

- Parallel and Current Share Multiple μModule ICs

- 22mm × 24mm × 22mm Surface-Mount Package

APPLICATIONS

- High Current Distributed Power Systems

- Servers, Network, and Storage Equipment

- Intelligent Energy Efficient Power Regulation