Patent ID: 8482552

Claim:
A computing system, comprising: one or more processors formed on a single chip; a direct-current to direct-current (DC-to-DC) converter circuit coupled to the one or more processors and formed on the single chip, the DC-to-DC converter circuit including a switching transistor, and a current measurement circuit, the current measurement circuit having a first pair of transistors with their respective conductive channels coupled in series, a drain of one of the first pair of transistors coupled to a first end of a conductive channel of the switching transistor, and a source of the other of the first pair of transistors coupled to a second end of the conductive channel of the switching transistor; an amplifier having a measurement leg coupled to a node between the first pair of transistors; and a second pair of transistors having their respective conductive channels coupled in parallel, a node between the second pair of transistors being coupled to a reference leg of the amplifier.