A method for controlling an efuse circuit is provided. The method includes the following steps. A sample signal of a switch is provided. An error signal is generated according to the sample signal and a reference signal. The error signal is compared with a threshold. A voltage across a control node of the switch and an output node of the switch is clamped to a preset voltage value when the error signal is greater than the threshold.

A method for controlling an efuse circuit is provided. The method includes the following steps. A sample signal of a switch is provided. An error signal is generated according to the sample signal and a reference signal. The error signal is compared with a threshold. A voltage across a control node of the switch and an output node of the switch is clamped to a preset voltage value when the error signal is greater than the threshold.

A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.

A frequency converter includes a monitoring unit that has respective first drive signals of gate drivers of a bidirectional power converter applied to it and that is designed to detect the failure of at least one mains phase of a three-phase AC grid voltage that is supplied to the bidirectional power converter based on a temporal profile of the respective first drive signals.

A system topology may use intentional signal injection to monitor one or more power supply circuits that may supply electrical power to components of the system. The system topology may include voltage monitoring circuitry to monitor the output of the power supply. In some examples, a power supply rail fault may happen either inside or outside of the power supply circuit, but not be detectable by the voltage monitoring circuitry. Injecting a check signal in the presence of an actual fault, may cause oscillations at the output node of the power supply detectable by the voltage monitoring circuitry. Once the check signal, combined with the fault signal, at the output node reaches the monitoring threshold detectable by the voltage monitoring circuitry, the voltage monitoring circuitry may output an indication of the fault to processing circuitry of the system.

A semiconductor module, including: plurality of output elements provided to constitute an upper arm and a lower arm; a resin case provided surrounding an accommodation space for accommodating the output elements; an arm-to-arm wiring line for connecting the upper arm with the lower arm; an output terminal, which is connected to the arm-to-arm wiring line and is for outputting output currents from the output elements to a load being external to the semiconductor module; a sense terminal, which is connected to the arm-to-arm wiring line and is for detecting currents that flow in the output elements; and an inductor provided between a connection point for connecting the arm-to-arm wiring line with the output terminal, and the output terminal is provided. An inductance of the inductor is 1 μH or more.

This disclosure describes a protection circuit configured to protect a power converter. The protection circuit may be configured to determine when the power converter is operating in a tristate mode, and upon determining that the power converter is operating in the tristate mode, to disable a supply to the power converter based on a comparison of a switch node voltage on a switch node of the power converter to a feedback node voltage on an output node of the power converter.

A method, an apparatus and a computer device for detecting an open circuit fault are provided. The sample data of the electrical signal at the primary side of the transformer in the CLLLC resonant bidirectional DC/DC converter is performed with spectrum analysis to obtain a first frequency, and whether an open circuit fault occurs in the CLLLC resonant bidirectional DC/DC converter can be determined according to the first frequency and an actual switching frequency.

A power supply for a vehicle with a first network (12) with a voltage source (18) and with a first group (G1) of electrical consumers (20), a second network (14) with a second voltage source (22) and with a second group (G2) of electrical consumers (24), and a circuit breaker device (30) connected between the first network(12) and the second network(14) with a first circuit breaker (32) and with a second circuit breaker (34). Each circuit breaker (32, 34) allows in a conductor state, the flow of current between its input terminal (E1, E2) and its output terminal (A1, A2) in both directions, and it allows a flow of current only from the input terminal (E1, E2) to the output terminal (A1, A2) in a diode state. The output terminal (A1) of the first circuit breaker (32) is connected to the first network (12), the input terminal (E1) of the first circuit breaker (32) is connected to the input terminal (E2) of the second circuit breaker (34), and the output terminal (A2) of the second circuit breaker (34) is connected to the second network (16). There is a third network (16) with a third voltage source (26) and with a third group (G3) of electrical consumers (28). The input terminal (E1) of the first circuit breaker (32) and the input terminal (E2) of the second circuit breaker (34) are connected to the third network (16).

A power supply for a vehicle with a first network (12) with a voltage source (18) and with a first group (G1) of electrical consumers (20), a second network (14) with a second voltage source (22) and with a second group (G2) of electrical consumers (24), and a circuit breaker device (30) connected between the first network(12) and the second network(14) with a first circuit breaker (32) and with a second circuit breaker (34). Each circuit breaker (32, 34) allows in a conductor state, the flow of current between its input terminal (E1, E2) and its output terminal (A1, A2) in both directions, and it allows a flow of current only from the input terminal (E1, E2) to the output terminal (A1, A2) in a diode state. The output terminal (A1) of the first circuit breaker (32) is connected to the first network (12), the input terminal (E1) of the first circuit breaker (32) is connected to the input terminal (E2) of the second circuit breaker (34), and the output terminal (A2) of the second circuit breaker (34) is connected to the second network (16). There is a third network (16) with a third voltage source (26) and with a third group (G3) of electrical consumers (28). The input terminal (E1) of the first circuit breaker (32) and the input terminal (E2) of the second circuit breaker (34) are connected to the third network (16).