Abstract: An example apparatus includes: rectifier circuitry including: a first resistor having a terminal; a second resistor having a terminal; a first transistor having a first terminal, a second terminal, and a control terminal; and a second transistor having a first terminal, a second terminal, and a control terminal; reference circuitry having a first input, a second input, a third input, a fourth input, and an output, the first input of the reference circuitry coupled to the control terminal of the first transistor, the second input of the reference circuitry coupled to the terminal of the second resistor and first terminal of the second transistor, the third input of the reference circuitry coupled to the control terminal of the second transistor, the fourth input of the reference circuitry coupled to the terminal of the first resistor and the first terminal of the first transistor.

Abstract: A semiconductor device including across-the-barrier (ATB) ESD protection circuitry configured to handle IEC currents. In one example, the semiconductor device comprises a circuit including a first port and a second port, a first clamp disposed between the first and second ports and configured to be coupled between two terminals of a coil of an isolation transformer, and a second clamp disposed between the first clamp and a reference node of the circuit.

Abstract: An example apparatus includes: rectifier circuitry including: a first resistor having a terminal; a second resistor having a terminal; a first transistor having a first terminal, a second terminal, and a control terminal; and a second transistor having a first terminal, a second terminal, and a control terminal; reference circuitry having a first input, a second input, a third input, a fourth input, and an output, the first input of the reference circuitry coupled to the control terminal of the first transistor, the second input of the reference circuitry coupled to the terminal of the second resistor and first terminal of the second transistor, the third input of the reference circuitry coupled to the control terminal of the second transistor, the fourth input of the reference circuitry coupled to the terminal of the first resistor and the first terminal of the first transistor.

Abstract: An example electronic circuit includes: a first circuit having an input and an output, the first circuit configured to provide a first voltage at the output of the first circuit based on an input signal at the input of the first circuit, the output of the first circuit coupled to a first node; a clamp circuit comprising a memory element configured to store a value based on the first voltage, the clamp circuit configured to inject a first current into the first node based on the value to increase the first voltage at the first node; and a comparator configured to generate an output signal corresponding to the input signal based on a comparison of the first voltage at the first node to a reference voltage.

Abstract: In some examples, a circuit includes a sink/source mode detector configured to compare a voltage provided at the first I/O terminal of the circuit to a first reference signal; determine, responsive to the voltage provided at the first I/O terminal exceeding the first reference signal, that the circuit is in a source mode; determine, responsive to the voltage provided at the first I/O terminal not exceeding the first reference signal, that the circuit is in a sink mode; responsive to determining that the circuit is in the source mode and an input signal of the circuit has a value less than a second reference signal, control a first switch to form a first current path between a voltage supply terminal and the first I/O terminal of the circuit; and responsive to determining that the circuit is in the sink mode and the input signal has a value greater than the second reference signal, control a second switch to form a second current path between a ground terminal and the first I/O terminal of the circuit.