Power sensing

摘要

Improved techniques for sensing and reporting consumed power are disclosed. The disclosed techniques comprise an integrated circuit solution for sensing power. In some embodiments, such an integrated circuit comprises a resistor on which a sense voltage sensed across an external resistor in response to a load current is mirrored and an analog-to-digital converter configured to regulate the voltage across the resistor and output a binary value representing power. The binary value representing power may integrate one or more electrical or environmental parameters such as current, voltage, temperature, battery voltage, etc.

主权项

1. An integrated circuit, comprising:
an internal resistor on which a sense voltage sensed across an external resistor in response to a load current is mirrored; and an analog-to-digital converter whose output sets a resistor ladder that regulates the voltage across the internal resistor to mirror the sense voltage and comprises a digital value representing power.