DESCRIPTION

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

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

· Digital PFC function optimizes harmonic correction and power factor for AC/DC systems.

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

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

FEATURES

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

· True RMS AC power metering and enhanced dynamic response.

· Optimized light load efficiency and output voltage adjustment.

· Frequency reduction, inrush current control, and switching frequency spread spectrum for EMI improvement.

· 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, 8 kB EEPROM, and GUI programming.

APPLICATIONS

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

· Industrial and medical power supply applications.