A ring-oscillator control circuit (100) including voltage reference (110), a ring oscillator (120), a power supply (130, 140) and a supply controller (150). The supply controller (150) is configured to select the power supply (130, 140) among an energy storage (130) and an energy source (140) such as to supply the ring oscillator (120) in function of the voltage reference (110).

A switched current control module comprises a hysteretic control component arranged to receive high and low threshold values and an indication of a current flow through a load, and to output a switched current control signal based on a comparison of the current flow indication to the high and low threshold values. A threshold generator is arranged to generate the high and low threshold values based on a base threshold value and a hysteretic excursion value. A base threshold value generator is arranged to generate the base threshold value based on the current flow indication and a setpoint value. A hysteretic excursion value generator is arranged to receive an indication of a switching frequency of the switched current control signal output by the hysteretic control component, and to generate the hysteretic excursion value based on the indicated switching frequency of the switched current control signal.

A switched current control module comprises a hysteretic control component arranged to receive high and low threshold values and an indication of a current flow through a load, and to output a switched current control signal based on a comparison of the current flow indication to the high and low threshold values. A threshold generator is arranged to generate the high and low threshold values based on a base threshold value and a hysteretic excursion value. A base threshold value generator is arranged to generate the base threshold value based on the current flow indication and a setpoint value. A hysteretic excursion value generator is arranged to receive an indication of a switching frequency of the switched current control signal output by the hysteretic control component, and to generate the hysteretic excursion value based on the indicated switching frequency of the switched current control signal.

A system for communicating information between circuits is described. A transmit circuit provides pulse-amplitude-modulation (PAM) signals via a communication channel to a receiver. A circuit in the receiver determines digital values from the received signals using a time-varying threshold voltage, which varies during the bit-time. This approach may compensate for inter-symbol interference (ISI) to increase the voltage and timing margins of the system.

A system for communicating information between circuits is described. A transmit circuit provides pulse-amplitude-modulation (PAM) signals via a communication channel to a receiver. A circuit in the receiver determines digital values from the received signals using a time-varying threshold voltage, which varies during the bit-time. This approach may compensate for inter-symbol interference (ISI) to increase the voltage and timing margins of the system.

A delay circuit includes a plurality of cascaded delay elements responsive to control signals. Each delay element is configurable to receive an input signal on a forward path and return the input signal on two return paths. A control unit is connected to the plurality of cascaded delay elements and configured to generate a first set of control signals for defining a first configuration of the plurality of cascaded delay elements, a second set of control signals for causing a delay element of the plurality of cascaded delay elements to change from a powered off status to a powered on status while configured in an initialization mode, and a third set of control signals for defining a second configuration of the plurality of cascaded delay elements.

An electronic circuit, integrated circuit, and method for a bias-less Miller clamp protection circuit, electrically coupled to an output of a driver circuit and to an input gate of a semiconductor switch device, for dynamically protecting the semiconductor switch device from turning from an off state to an on state in response to a parasitic Miller turn-on signal at the gate, regardless of the bias-less Miller clamp protection circuit having, or lacking, a power supply that provides electrical power to the bias-less Miller clamp protection circuit. The semiconductor switch device can include one or more GaN switch devices. The bias-less Miller clamp protection circuit does not consume any current during normal operation of the electronic circuit and also does not cause any interference to the normal operation.

An electronic circuit, integrated circuit, and method for a bias-less Miller clamp protection circuit, electrically coupled to an output of a driver circuit and to an input gate of a semiconductor switch device, for dynamically protecting the semiconductor switch device from turning from an off state to an on state in response to a parasitic Miller turn-on signal at the gate, regardless of the bias-less Miller clamp protection circuit having, or lacking, a power supply that provides electrical power to the bias-less Miller clamp protection circuit. The semiconductor switch device can include one or more GaN switch devices. The bias-less Miller clamp protection circuit does not consume any current during normal operation of the electronic circuit and also does not cause any interference to the normal operation.

An integrated circuit (“IC”) includes an input receiver with multiple hysteresis levels. An exemplary input receiver may be an input buffer with a Schmitt trigger that has multiple hysteresis windows between different high and low input voltages. This circuit may improve the input noise immunity of the external input signals and timing by allowing for a selection one of the plurality of levels depending on parameters of the input (e.g. noise level).

An integrated circuit (“IC”) includes an input receiver with multiple hysteresis levels. An exemplary input receiver may be an input buffer with a Schmitt trigger that has multiple hysteresis windows between different high and low input voltages. This circuit may improve the input noise immunity of the external input signals and timing by allowing for a selection one of the plurality of levels depending on parameters of the input (e.g. noise level).