Patent ID: 9614661
Date: 2017-04-04
CPC Classifications: H02J,H04L

Claim:
1. A battery management and protection integrated circuit comprising a communication interface circuit that comprises: a first pair of differential input signal lines; a first receiver comprising a first current comparator circuit to receive incoming differential signals on the first pair of differential input signal lines; a first transmitter to provide outgoing differential signals on the first pair of differential input signal lines; a second pair of differential input signal lines; a second receiver comprising a second current comparator circuit to receive incoming differential signals on the second pair of differential input signal lines; a second transmitter to provide outgoing differential signals on the second pair of differential input signal lines; and a digital circuit block that allows signals to pass from the first receiver to the second transmitter and that allows signals to pass from the second receiver to the first transmitter, wherein each of the first and second current comparator circuits includes: class AB voltage output stages to generate current signals based on differential current input signals; and current mirrors to transfer the current signals generated by the class AB voltage output stages to a summing node so as to provide a digital voltage output based on the differential input current.