Analog Devices Inc. (ADI) offering Digital PFC (Power Factor Correction) Controller with highly accurate AC power meter capability and inrush control functionality. ADI’s new ADP1047 digital PFC controller is effective for AC/DC power-factor correction and precision power metering applications that require high reliability and redundant power supplies, such as communications infrastructure and motor control.

Digital PFC (Power Factor Correction) Controller ADP1047ADI’s new ADP1047 digital PFC controller uses conventional, continuous-conduction mode PFC techniques; 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. This allows designers to optimize system harmonic performance, maximize efficiency across the load range and reduce time-to-market. The ADP1047 is programmed using an intuitive, easy-to-use GUI (graphical user interface).

The ADP1047 digital PFC controller provides 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. The ADP1047 digital PFC controller can be frequency synchronized to eliminate ‘beat’ frequency noise or alternatively the switching frequency spread spectrum feature can be enabled to further improve EMI.