Shown on this slide is an example of a current and voltage waveform that are changing phases over a 20µs interval. It shows how power would be calculated differently in typical power or energy monitoring ICs vs. the LTC2947. In typical power or energy monitoring ICs, power is calculated as the average current multiplied by the average voltage. In the LTC2947, power is calculated as the average of multiplied samples. In the example, where only two samples are used, the LTC2947 102W power calculation more closely resembles actual power and the typical power or energy monitoring IC’s 110W power calculation is a 7.8% error. The LTC2947 avoids this error and maintains accuracy with up to 50kHz signals.