Digital PFC Controller Features Accurate Power Metering, GUI Interface

Published:2011/8/31 8:15:00 Author:Amy From:SeekIC

Analog Devices, a worldwide developer and supplier of analog, mixed-signal, and digital signal processing (DSP) integrated circuits (IC), recently introduced a digital PFC (power factor correction) controller with accurate AC power meter capability and inrush control functionality.

This chip is necessary for AC/DC power-factor correction and precision power metering applications that require high reliability and redundant power supplies including communications infrastructure and motor control. With conventional, continuous-conduction mode PFC techniques adopted in the ADP1047 controller, all signals are converted to the digital domain, allowing all parameters to be adjusted and reported over a PMBus compliant interface -- including accurate RMS measurement of input voltage, current and power. In addition, this also allows designers to optimize system harmonic performance, maximize efficiency across the load range and reduce time-to-market. The ADP1047 is programmed with an intuitive GUI. The ADP1047 digital PFC controller offers typical power metering accuracy of ±3 percent at full load current with further improvements to ±1 percent with customer calibration. The new digital PFC controller also offers enhanced transient response through non-linear control algorithms, programmable inrush control to reduce start-up over-stress, real-time programming to maximize efficiency and extensive fault detection and reporting for improved reliability.

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