In summary, a switching circuit comprising a high side (HS) switch coupled to the output, a low side (LS) switch comprising a MOSFET coupled to the output, and a slope regulator core coupled to the gate of said low side (LS) switch configured to provide control signals to said slope regulator core. In addition, a method of providing a method of a switch circuit comprising the steps the first step, (a) providing a circuit comprising a low side (LS) switch, a high side (HS) switch, and a slope regulator wherein said slope regulator comprises a fast mode, a slope regulator mode, and a hold mode, the second step (b) activating said slope regulator, the third step (c) choosing a fast mode or a slope regulation mode, the fourth step (d) applying either a fast mode or slope regulation mode; the fifth step (e) evaluating the polarity of the signal, the sixth step (f) toggle signal hold_on if the gate is low or toggle signal hold_off if the gate is high.

A circuit for determining a slew rate of an input signal includes a first MOSFET, a second MOSFET, and a resistor coupled in series between a ground terminal and a power terminal. The resistor is coupled between the power terminal and the second MOSFET, and the first MOSFET is coupled between the second MOSFET and the ground. The second MOSFET is coupled to a bias circuit to provide a bias current. The circuit also includes a capacitor having a first terminal and a second terminal, the first terminal coupled to the input signal and the second terminal coupled to the gate terminal and the drain terminal of the first MOSFET. A current flowing through the MOSFET during changes in the input signal represents a slew rate of the input signal.

An electronic device may include a ramp signal generator suitable for generating a ramp signal having a slope corresponding to an analog gain, and a slope correction circuit suitable for correcting the slope based on a correction code signal.

An electronic device may include a ramp signal generator suitable for generating a ramp signal having a slope corresponding to an analog gain, and a slope correction circuit suitable for correcting the slope based on a correction code signal.

A controller controls Pulse Width Modulation (PWM) signals of one or more phases. The controller includes a phase sequencer to select a phase, a common ramp generator generating a common ramp signal, a phase activation circuit to turn on the PWM signal of the selected phase based on the common ramp signal, and for each phase a Current Sense plus Ramp (CSR) signal generator to generate a phase CSR signal according to a current of the phase and a phase deactivation circuit to turn off the PWM signal of the phase based on the phase CSR signal. A method of controlling PWM phases comprises selecting a phase, generating a common ramp signal, turning on the PWM signal of the selected phase based on the common ramp signal, generating CSR signals according to currents of the phases, and turning off the PWM signals based on the respective CSR signals.

In summary, a switching circuit comprising a high side (HS) switch coupled to the output, a low side (LS) switch comprising a MOSFET coupled to the output, and a slope regulator core coupled to the gate of said low side (LS) switch configured to provide control signals to said slope regulator core. In addition, a method of providing a method of a switch circuit comprising the steps the first step, (a) providing a circuit comprising a low side (LS) switch, a high side (HS) switch, and a slope regulator wherein said slope regulator comprises a fast mode, a slope regulator mode, and a hold mode, the second step (b) activating said slope regulator, the third step (c) choosing a fast mode or a slope regulation mode, the fourth step (d) applying either a fast mode or slope regulation mode; the fifth step (e) evaluating the polarity of the signal, the sixth step (f) toggle signal hold_on if the gate is low or toggle signal hold_off if the gate is high.

In some examples, an apparatus comprises: an amplifier having an amplifier output and first and second amplifier inputs, the first amplifier input coupled to a reference voltage terminal, and the second amplifier input coupled to a power input terminal; a ramp generation circuit having a reset input and a ramp output; a comparator having a comparator output and first and second comparator inputs, the first comparator input coupled to the amplifier output, and the second comparator input coupled to the ramp output; and a switching signal generation circuit having a circuit input and a circuit output, the circuit input coupled to the comparator output, and the circuit output coupled to a power control terminal.

A method for generating a voltage waveform includes providing an optical signal, which comprises one or more sequences of optical pulses, distributing the optical pulses via optical waveguides to a plurality of optical-to-electrical converter units, using the optical-to-electrical converter units to convert the optical pulses into electric driving current pulses, generating voltage pulses by driving Josephson junctions with the electric driving current pulses.

Sensing devices configured to detect photons with high accuracy regardless of environmental illuminance are disclosed. In one example, a sensing device includes a photodetector and a load element connected between the photodetector and a first reference potential. A first transistor is configured to be turned on according to a voltage of a node between the photodetector and the load element. A second transistor is configured to turn on according to either a current of the first transistor or a voltage of a second signal line. A third transistor of an opposite conductivity type to the first and second transistors is configured to turn on according to the voltage of the second signal line. A first inverter is connected between a node between the first transistor and the third transistor and a fourth signal line.

Sensing devices configured to detect photons with high accuracy regardless of environmental illuminance are disclosed. In one example, a sensing device includes a photodetector and a load element connected between the photodetector and a first reference potential. A first transistor is configured to be turned on according to a voltage of a node between the photodetector and the load element. A second transistor is configured to turn on according to either a current of the first transistor or a voltage of a second signal line. A third transistor of an opposite conductivity type to the first and second transistors is configured to turn on according to the voltage of the second signal line. A first inverter is connected between a node between the first transistor and the third transistor and a fourth signal line.