In summary, the amount of voltage drop across a sense resistor in the current path is proportional to the current. A current to voltage transformation processes the information using an ADC. A small value sense resistor is utilized because it dissipates little power and does not affect the overall loading of the circuit. An amplifier is used to increase the signal to the ADC due to the small sense voltage generated by the small value sense resistor. A total current sense solution accurately senses current while not affecting circuit performance. The digital power monitor integrates the amplifier and ADC into a single IC to measure both current and voltage and provide a digital output to the microcontroller or FPGA. Renesas provides a complete portfolio for power monitor/current sensing solutions. The digital power monitor was primarily designed for telecom, datacom, and servers but can be designed into a variety of applications. Digital power monitor is also compatible with the Renesas PowerNavigator GUI software which allows simple configuration and monitoring of multiple digital-DC devices using a PC with a USB interface. The GUI makes it easy to change all features, functions, and/or monitoring of a power supply design.