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