ADP1047 Digital Power Factor Correction Controller with accurate AC Power Metering

The ADP1047/ADP1048 provide accurate rms measurement of input voltage, current, and power. This information can be reported to the microcontroller of the power supply via the PMBus interface. Applications AC/DC power supplies for applications Computing Server & Storage Network and communication infrastructure Industrial and Medical

The ADP1047/ADP1048 are digital power factor correction (PFC) controllers that provide accurate input power metering capability and inrush current control for ac/dc systems. The ADP1047 is designed for single phase PFC applications; the ADP1048 is designed especially for interleaved and bridgeless PFC applications.

The digital PFC function is based on a conventional boost PFC with multiplication of the output voltage feedback combined with the input current and voltage to provide optimum harmonic correction and power factor for ac/dc systems. All signals are converted into the digital domain to provide maximum flexibility; all key parameters can be reported and adjusted via the PMBus™ interface. The ADP1047/ADP1048 allow users to optimize system performance, maximize efficiency across the load range, and reduce design time to market.

The ADP1047/ADP1048 provide accurate rms measurement of input voltage, current, and power. This information can be reported to the microcontroller of the power supply via the PMBus interface.

Applications

AC/DC power supplies for applications Computing Server & Storage Network and communication infrastructure Industrial and Medical

Features and Benefits

Flexible digital power factor correction (PFC) controller
Single phase operation (ADP1047); interleaved and bridgeless operation (ADP1048)
True rms ac power metering
Enhanced dynamic response
Optimized light load efficiency performance
Output voltage adjustment
Frequency reduction
Inrush current control
Switching frequency spread spectrum for improved EMI

External frequency synchronization
PMBus compliant
Programmable ac line fault detection and protection
Programmable output fault detection and protection
Extensive fault protection for high reliability systems
Frequency range from 30 kHz to 400 kHz
8 kB EEPROM
Programming via easy-to-use graphical user interface (GUI)