Disclosed herein is a circuit including a transistor, with a resonant tank coupled between a DC supply node and a first conduction terminal of the transistor. A gate driver generates a gate drive signal for biasing a control terminal of the transistor to cause it to conduct current through the resonant tank. Control circuitry monitors a voltage across the transistor to determine that the transistor is an overvoltage condition if that voltage exceeds a threshold, and monitors a current through the transistor to determine that the transistor is an overcurrent condition if that current exceeds a threshold. If overvoltage is determined, the control circuitry causes the gate driver to pull up the gate drive signal. If overcurrent is determined, the control circuitry causes the gate driver to pull down the gate drive signal. If either overvoltage or overcurrent is present, a pulse width of the gate drive signal is reduced.

Embodiments described herein are directed to power switching circuits having a saturable inductor. In one embodiment, a power switching circuit includes a power switch assembly operable to be connected to a power source. The power switch assembly includes a plurality of parallel power switches connected to and receiving current from the power source and a saturable inductor electrically coupled in series with the plurality of parallel power switches.

A FET driving circuit includes: two inputs for inputting a DC voltage; two outputs respectively connected to gate and source electrodes of a FET; a switch; a resonant capacitance connected between both ends of the switch; and an LC resonance circuit connected between the inputs and both ends of the switch. When the two inputs are shorted, frequency characteristics of an impedance of the LC resonance circuit include, in order from a low to a high-frequency side, first to fourth resonant frequencies. The first resonant frequency is higher than a switching frequency of the switch, the second resonant frequency is around double the switching frequency, the fourth resonant frequency is around four times the switching frequency, and the impedance has local maxima at the first resonant frequency and the third resonant frequency and local minima at the second resonant frequency and the fourth resonant frequency.

A gate drive circuit arranged to receive an input signal and provide an output signal to drive a gate of a transistor is presented. The gate drive circuit comprises a filter circuit arranged to attenuate a frequency band from the input signal when deriving the output signal from the input signal. The filter circuit contains programmable resistive elements, comprising: a first programmable resistive element arranged to adjust a low frequency gain and bandwidth of the gate drive circuit; a second programmable resistive element arranged to adjust a high frequency gain of the gate drive circuit; and a pair of programmable resistive elements arranged to adjust a driving gain of the gate drive circuit. A method of receiving an input signal and deriving an output signal from an input signal is also presented. The step of deriving an output signal comprises attenuating a frequency band from the input signal.

A device [200, para. 16] includes a transformer [206, para. 16] that further includes a primary [208, para. 16] and a secondary [210, para. 16] windings. A switch [212, para. 20] is coupled to the primary winding, and this switch is controlled by the received digital input signal. An oscillator [216, para. 17] is further formed on the secondary winding where the oscillator oscillates in response to variations of the received input signal. [para. 19] A detector [218, para. 17] coupled to the oscillator will then detect the oscillations in response to the variations of the received input signal. Thereafter, the detector generates a digital output [108, para. 14] based on the detected oscillations. [para. 25]

A circuit for regenerative gate charging includes an inductor coupled to a gate of a FET. An output control circuit is coupled to a timing control circuit and a bridged inductor driver, which is coupled to the inductor. A sense circuit is coupled to the gate and to the timing control circuit, which receives a control signal, generates output control signals in accordance with a first switch timing profile, and transmits the output control signals to the output control circuit. In accordance with the first switch timing profile, the output control circuit holds switches of the bridged inductor driver in an ON state for a first period and holds all of the switches in an OFF state for a second period. Gate voltages are sampled during the second period and after the first period. The timing control circuit generates a second switch timing profile using the sampled voltages.

Described herein are reduced-power electronic circuits with wide-band energy recovery using non-interfering topologies. A resonant clock distribution network comprises a plurality of resonant clock drivers that receive at least one of a plurality of reference clock signals. An energy saving component is coupled with the plurality of resonant clock drivers. The energy saving component provides for lower energy consumption by resonating with unwanted parasitic capacitance of a load capacitance. The energy saving component and the load capacitance (LC) form a series resonant frequency that is significantly greater than a clock frequency of the plurality of resonant clock drivers, so that output clock signal paths are not interfered with and so that effects on skew are minimized.

A switching half-bridge has two field-effect transistors and a supplementary circuit arranged upstream of a gate terminal of a first field-effect transistor and formed of a first circuit branch having a damping resistor and an inductor connected in series with the damping resistor and a second circuit branch being connected in parallel with the first circuit branch and having a series resistor and an auxiliary switch connected in series with the series resistor. The half-bridge can be switched from a first switching state to a second switching state, wherein while the auxiliary switch is open, a change in the control voltage causes the first circuit branch to temporarily change the gate source voltage of the first field-effect transistor from the switch-on level to a second switch-off level greater than a first switch-off level, with the gate-source voltage thereafter returning to the first switch-off level,

A circuit and a corresponding method for driving one or more electric loads are described, comprising: a generator (110) of an electric current waveform, and a passive filter (150) connected in input to the generator (110) and in output to each electric load (105) to be driven, wherein the passive filter (150) is tuned for generating an electric current waveform resulting from a conditioning of one or more harmonics of the electric current waveform in input.

An auxiliary circuit for outputting a supplying voltage or a detection signal includes a normally-on device and a signal processing circuit. A drain terminal of the normally-on switching device is coupled to a first terminal, a gate terminal of the normally-on switching device is coupled to a second terminal. An input voltage between the first terminal and the second terminal switches between two different levels. The signal processing circuit is configured to output the supplying voltage or the detection signal according to a voltage at a source terminal of the normally-on switching device.