A semiconductor element drive device is provided to solve a problem that because a case of a change in the temperature of the semiconductor element or a current flowing through the semiconductor element is not take into consideration, switching loss and noise cannot be reduced sufficiently. In accordance with input sensing information (temperature T, current I), a timing control unit 3 outputs a delay signal Q to control timing of driving a current increasing circuit 5 so that a reduction of switching loss of an IGBT 101 is maximized. When the IGBT 101 is in turn-on mode or turn-off mode, the current increasing circuit 5 outputs a drive signal in response to the delay signal Q delayed by a given time from output of the drive instruction signal P. In this way, the current increasing circuit 5 increases the current that causes the gate capacitor of the IGBT 101 to be charged/discharged in response to the delay signal Q, thereby increasing a switching speed to reduce switching loss.

A signal output circuit and a circuit for outputting a delayed signal are provided. The signal output circuit includes: a first control subcircuit, configured to receive a first pulse signal and an input signal and output a first adjustment signal, a first preset edge of the first adjustment signal has a first delay relative to a rising edge of the input signal; a second control subcircuit configured to receive a second pulse signal and the input signal and output a second adjustment signal; and the signal output subcircuit is configured to receive the first adjustment signal and the second adjustment signal, and output a delayed output signal, a rising edge of the delayed output signal is generated according to the first preset edge of the first adjustment signal, and a falling edge of the delayed output signal is generated according to the second preset edge of the second adjustment signal.

A pulse generation circuit and stagger pulse generation circuit are provided. The pulse generation circuit includes: an oscillation circuit that receives a control signal and generates a first oscillation signal according to the control signal; a period adjustment circuit that receives the first oscillation signal and a magnification selection signal and outputs a second oscillation signal, the period of the second oscillation signal is a period of the first oscillation signal or a period of an oscillation adjustment signal, and the second oscillation signal is selected according to the magnification selection signal; and a pulse conversion circuit that receives the second oscillation signal and outputs a pulse signal, the pulse of the pulse signal is generated according to the rising or falling edge of the second oscillation signal, and the pulse period of the pulse signal is the same as the oscillation period of the second oscillation signal.

Apparatuses and methods for preventing accidental-shutdown in a robot-assisted surgical device are disclosed. An exemplary control apparatus includes an on/off key configured to trigger a start action or a shutdown action, an on/off control module configured to detect the shutdown action of the on/off key and obtain a shutdown intention through man-machine interaction, and an on/off hardware circuit configured to detect the start action and send a signal to a power supply. The on/off hardware circuit is configured to detect the shutdown action of the on/off key and a shutdown control signal sent by the on/off control module and send a signal to cut off the power supply. The control apparatus can reduce the probability of accidental shutdown caused by system software and hardware failure or man-made mis-operation and improve the operating reliability of the robot-assisted surgical device without significantly increasing cost.

Apparatuses and methods for preventing accidental-shutdown in a robot-assisted surgical device are disclosed. An exemplary control apparatus includes an on/off key configured to trigger a start action or a shutdown action, an on/off control module configured to detect the shutdown action of the on/off key and obtain a shutdown intention through man-machine interaction, and an on/off hardware circuit configured to detect the start action and send a signal to a power supply. The on/off hardware circuit is configured to detect the shutdown action of the on/off key and a shutdown control signal sent by the on/off control module and send a signal to cut off the power supply. The control apparatus can reduce the probability of accidental shutdown caused by system software and hardware failure or man-made mis-operation and improve the operating reliability of the robot-assisted surgical device without significantly increasing cost.

A semiconductor device having a semiconductor chip and a control circuit. The semiconductor chip has a gate electrode pad connected to the gate of an output element and the gate of a current monitor element, a sense emitter electrode pad connected to the sense emitter of the current monitor element and to the anode of the temperature detection diode via a current limiting element, and a cathode electrode pad that is connected to the cathode of the temperature detection diode, the cathode being grounded without being connected to the emitter of the output element. In a temperature detection mode, the control circuit receives a temperature detection voltage via the sense emitter electrode pad and detects the temperature state of the output element. In a current detection mode, the control circuit receives a sense current via the sense emitter electrode pad and detects the current state of the output element.

A semiconductor device having a semiconductor chip and a control circuit. The semiconductor chip has a gate electrode pad connected to the gate of an output element and the gate of a current monitor element, a sense emitter electrode pad connected to the sense emitter of the current monitor element and to the anode of the temperature detection diode via a current limiting element, and a cathode electrode pad that is connected to the cathode of the temperature detection diode, the cathode being grounded without being connected to the emitter of the output element. In a temperature detection mode, the control circuit receives a temperature detection voltage via the sense emitter electrode pad and detects the temperature state of the output element. In a current detection mode, the control circuit receives a sense current via the sense emitter electrode pad and detects the current state of the output element.

Described is a battery de-passivation circuit that generally comprises a battery having a de-passivation circuit attached across its positive and negative terminals. The de-passivation circuit includes a switch that can open or close the de-passivation circuit, a resistor that can regulate the amount of current drawn from the battery and a clock and timer controller system that controls the switch. The controller system controls closing the circuit long enough to bring the passivation level build-up within the battery to an acceptable lower level and controls opening the circuit long enough to allow passivation levels to build-up to an acceptable upper level.

Embodiments of this application relate to the field of electricity, and disclose a drive circuit. In some embodiments of this application, the drive circuit includes a high-side driver module and a delay module, the delay module is configured to output a delay signal of preset duration to the high-side driver module in a case that a control module is being reset; and the high-side driver module is configured to: according to the delay signal of preset duration, remain in a first state within the preset duration, the first state being the same as a second state; where the second state is a working state of the high-side driver module before the control module is reset, and the second state includes being on or off.

Embodiments of this application relate to the field of electricity, and disclose a drive circuit. In some embodiments of this application, the drive circuit includes a high-side driver module and a delay module, the delay module is configured to output a delay signal of preset duration to the high-side driver module in a case that a control module is being reset; and the high-side driver module is configured to: according to the delay signal of preset duration, remain in a first state within the preset duration, the first state being the same as a second state; where the second state is a working state of the high-side driver module before the control module is reset, and the second state includes being on or off.