Kinetic Technologies International Holdings LP

Siddharth Dutta

Systems and methods are disclosed for improving common mode transient immunity in silicon digital isolators using capacitive barrier for galvanic isolation. The systems include transmitters and receivers that include differential amplifiers. The differential amplifier may include a first transistor electrically coupled between a first input of the transmitter and a first output of the transmitter, a second transistor electrically coupled between a second input of the transmitter and a second output of the transmitter, a first passive load electrically coupled between the first output of the transmitter and a source rail, and a second passive load electrically coupled between the second output of the transmitter and the source rail, wherein the first and second passive loads have the same impedance; and a bias voltage source configured to bias a gate of the first transistor and a gate of the second transistor.

Systems and methods for improving common mode transient immunity in silicon digital isolators using capacitive barrier for galvanic isolation

One aspect disclosed features an apparatus comprising: an input buffer configured to receive an input voltage pulse as an input, and to output, responsive to a leading edge of the input voltage pulse, a logic high voltage pulse at a first output of the input buffer and a logic low voltage pulse at a second output of the input buffer; an array of L active pull-up devices electrically coupled between a positive supply rail and an output node, each active pull-up device driven by the logic high voltage pulse as modulated by a corresponding bit of a series of N first L-bit binary words; and an array of L active pull-down devices electrically coupled between a negative supply rail and the output node, each active pull-down device driven by the logic low voltage pulse as modulated by a corresponding bit of a series of M second L-bit binary words.

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San Jose, CA, United States of America

Siddharth Dutta