Low-Power/Low-Voltage Integrated CMOS Sense Resistor-Free Analog Power/Current Sensor Compatible With High-Voltage Switching DC-DC Converter.

A sensor circuit to measure the output power of a dc-dc boost for photo-voltaic (PV) maximum power point tracking (MPPT) application is presented. The proposed approach obviates the need for a series current sense resistor and a complex current/voltage digitization and multiplication circuitry required for calculating power. Thereby, this technique does not require analog multipliers, analog-to-di...