A surge protection system is provided. The surge protection system includes an input capacitor, a surge protection circuit, and a controller. When the input voltage starts to be transmitted to the input capacitor, a surge current is generated. The surge protection circuit includes a first path and a second path. The surge protection circuit is coupled to a second end of the input capacitor via the first path, so that the surge current is transmitted via the first path. The controller is coupled to the surge protection circuit. The controller is configured to provide a control signal to the surge protection circuit to switch the first path to the second path to be coupled to the second end of the input capacitor.

An electronic power distribution arrangement is disclosed which includes an electrical line for supplying power to a capacitive load; a first electronic switch for fusing the capacitive load; a second electronic switch for precharging the capacitive load prior to switching through the first electronic switch; a resistor connected in series with the second switchable current path of the second electronic switch, the series connection being connected in parallel with the first switchable current path of the first electronic switch; and a controller. The controller is adapted to turn on the second electronic switch to precharge the capacitive load before turning on the first electronic switch to supply power to the capacitive load, and to turn on the first electronic switch only when a voltage across the resistor reaches a threshold value.

This present disclosure discloses an ignition overcurrent protection device, which includes a switch, a current detection circuit, and a controller. The switch is electrically coupled between a starting power and a power-on connector; the power-on connector is configured for connecting to the automotive power. The current detection circuit is configured for detecting a current value flowing between the starting power and the power-on connector. The controller is coupled to the switch and the current detection circuit. The controller is configured to determine a current range where the current value is located, and determine a preset time threshold corresponding to the current range, and control the switch to be turned off when a duration of the current value reaches the preset time threshold. The present disclosure also provides a starting power equipment and ignition overcurrent protection.

A method for operating an electrical energy supply device, in particular a switched-mode power supply device for supplying electrical energy to electrical components from an energy source. A computer program is also provided for carrying out a method of this type, as well as an electrical energy supply device, which is configured to carry out a method of this type.

A method and a device for supplying energy to a low-voltage load using an electronic power supply device. The method involves: a) setting the power supply device to be able to provide an output current to the low-voltage load up to a specified peak current value upon demand; b) monitoring the output current (I.sub.L) provided to the low-voltage load by the electronic power supply device to detect an increase of I.sub.L over a threshold (I.sub.N) which is lower than the peak current value, c) if an increase of I.sub.L to an increased output current value higher than I.sub.N is detected, detecting the increased I.sub.L value and ascertaining an output current pulse duration (t.sub.Pulse) based on the increased current value; d) providing I.sub.L at the level of the increased current value for the duration of the ascertained t.sub.Pulse; and e) providing the I.sub.L at the level of I.sub.N after t.sub.Pulse has expired.

An object of the present technique is to favorably prevent an excess current upon initial charging of a capacitor for assisting power supply. A control unit is provided that controls a power system in which a power supply is connected to a load via a power supply line, a capacitor for assisting power supply is connected to the power supply line via a first switch, and the capacitor is configured to be charged while being subjected to current limitation due to intermittent driving by a switching power supply using the power supply as input. The control unit is configured to control the switching power supply so that an output voltage thereof becomes equal to a voltage of the power supply line and to control the first switch from an off-state to an on-state after charging of the capacitor is completed to connect the capacitor to the power supply line.

This present disclosure discloses an ignition overcurrent protection device, which includes a switch, a current detection circuit, and a controller. The switch is electrically coupled between a starting power and a power-on connector; the power-on connector is configured for connecting to the automotive power. The current detection circuit is configured for detecting a current value flowing between the starting power and the power-on connector. The controller is coupled to the switch and the current detection circuit. The controller is configured to determine a current range where the current value is located, and determine a preset time threshold corresponding to the current range, and control the switch to be turned off when a duration of the current value reaches the preset time threshold. The present disclosure also provides a starting power equipment and ignition overcurrent protection.

A transient voltage suppressing (TVS) integrated circuit includes an input output pin, a ground pin, a substrate, a first TVS die and a second TVS die. The substrate provides a common bus. The first TVS die is disposed on the substrate, and includes a first input output terminal and a first reference ground terminal. The second TVS die is disposed on the substrate and includes a second input output terminal and a second reference ground terminal. The second reference ground terminal is electrically coupled to the first reference ground terminal through the common bus, and the first input output terminal is coupled to the first input out pin, and the second input output terminal is coupled to a ground pin.

An eFuse for use in high voltage applications is disclosed. In one embodiment, an apparatus includes a solid-state switch having source and drain terminals connected to switch a load current from a high voltage source through a high voltage load. The apparatus also includes a sense circuit that senses a voltage between the switch source and drain terminals and turns off the switch when the voltage exceeds a selected voltage level.

For power converter pre-charge with line synchronization, a method magnetizes a power transformer of a power converter with a supply voltage from a variable voltage variable frequency supply. The method pre-charges power cells of the power converter fed from the power transformer to a specified voltage with the supply voltage. The method further modifies a primary amplitude, a primary phase, and a primary frequency of a primary winding of the power converter with the supply voltage to match a main amplitude, a main phase, and a main frequency of a main voltage of a main power source. In response to matching the primary amplitude, the primary phase, and the primary frequency to the main amplitude, the main phase, and the main frequency, the method connects the main power source to the power transformer.