DESCRIPTION

· The ADP1047/ADP1048 are digital PFC controllers with accurate input power metering and inrush current control for AC/DC systems.

· ADP1047 is for single-phase PFC; ADP1048 supports interleaved and bridgeless PFC.

· Digital PFC function optimizes harmonic correction and power factor.

· All signals are digitized for flexibility; parameters are adjustable via PMBus interface.

· Enables system performance optimization, efficiency maximization, and reduced design time.

· Provides accurate RMS measurement of input voltage, current, and power, reportable via PMBus.

FEATURES

· Flexible digital PFC controller with single-phase (ADP1047) or interleaved/bridgeless (ADP1048) operation.

· True RMS AC power metering and enhanced dynamic response.

· Optimized light load efficiency, output voltage adjustment, and frequency reduction.

· Inrush current control and switching frequency spread spectrum for improved EMI.

· External frequency synchronization and PMBus compliance.

· Programmable AC line and output fault detection/protection.

· Extensive fault protection for high reliability systems.

· Frequency range: 30 kHz to 400 kHz, with 8 kB EEPROM.

· Programming via easy-to-use GUI.

APPLICATIONS

· AC/DC power supplies for computing servers, storage, and network/communication infrastructure.

· Industrial and medical power systems.