Abstract: A circuit board structure includes a carrier, a thin film redistribution layer disposed on the carrier, solder balls electrically connected to the thin film redistribution layer and the carrier, and a surface treatment layer. The thin film redistribution layer includes a plurality of pads, a first dielectric layer, a first metal layer, a second dielectric layer, a second metal layer, and a third dielectric layer. A plurality of first openings of the first dielectric layer expose part of the pads, and a first surface of the first dielectric layer is higher upper surfaces of the pads. The solder balls are disposed in a plurality of third openings of the third dielectric layer and are electrically connected to the second metal layer and the carrier. The surface treatment layer is disposed on the upper surfaces, and a top surface of the surface treatment layer is higher than the first surface.

Abstract: An uninterruptible power system and an operation method thereof are provided. The uninterruptible power system comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units, a plurality of output ports and a control unit. Each output port is electrically coupled to an output terminal of the DC-AC conversion circuit sequentially through one of the sensing units and one of the switches. The control unit is configured to define members of at least one group from the output ports according to a system setting, and define which members of each group are non-critical output ports according to the system setting. The control unit is further configured to set, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.

Abstract: An off-line uninterruptible power system and two line-interactive uninterruptible power systems are provided. The off-line uninterruptible power system and one of the line-interactive uninterruptible power systems additionally adopt a transformer for supplying an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic). The other line-interactive uninterruptible power system controls its automatic voltage regulating circuit to supply an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic).

Abstract: An uninterruptible power system and an operation method thereof are provided. The uninterruptible power system comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units, a plurality of output ports and a control unit. Each output port is electrically coupled to an output terminal of the DC-AC conversion circuit sequentially through one of the sensing units and one of the switches. The control unit is configured to define members of at least one group from the output ports according to a system setting, and define which members of each group are non-critical output ports according to the system setting. The control unit is further configured to set, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.

Abstract: A power supplying device comprising a battery, a charging circuit and a DC-AC conversion circuit is provided. The charging circuit is electrically coupled to an AC power source and configured to charge the battery. The DC-AC conversion circuit is electrically coupled to the battery and configured to supply an AC output. When the power supplying device is powered on, both of the charging circuit and the DC-AC conversion circuit are enabled.

Abstract: An off-line uninterruptible power system and two line-interactive uninterruptible power systems are provided. The off-line uninterruptible power system and one of the line-interactive uninterruptible power systems additionally adopt a transformer for supplying an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic). The other line-interactive uninterruptible power system controls its automatic voltage regulating circuit to supply an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic).

Abstract: A power supplying device comprising a battery, a charging circuit and a DC-AC conversion circuit is provided. The charging circuit is electrically coupled to an AC power source and configured to charge the battery. The DC-AC conversion circuit is electrically coupled to the battery and configured to supply an AC output. When the power supplying device is powered on, both of the charging circuit and the DC-AC conversion circuit are enabled.

Abstract: The invention provides an uninterruptible power supply, which comprises a battery management circuit and a control circuit. The battery management circuit is electrically coupled to each battery of at least one battery string for measuring the voltage of each battery. When the battery strings discharge, the control circuit obtains the voltage of each battery through the battery management circuit to calculate the discharge current of each battery, and determines whether there is any measured voltage having dropped to an EOD voltage corresponding to a discharge current of a corresponding battery. When the determination result is positive, the control circuit controls the uninterruptible power system to stop the discharging of at least one battery string in which there is at least one measured voltage having dropped to an EOD voltage corresponding to a discharge current of a corresponding battery. Furthermore, a corresponding battery management apparatus is also provided.

Abstract: A volume control device suitable for an uninterruptible power system comprising a fan is provided. The volume control device comprises a user interface and a control circuit. The control circuit is electrically coupled to the fan and the user interface, and is used to receive a maximum operation volume setting value through the user interface. When the control circuit is ready to increase the rotation speed of the fan, it further determines whether the corresponding volume of the current rotation speed of the fan is less than the maximum operation volume setting value, and accordingly determines whether to adjust the rotation speed of the fan.

Abstract: A volume control device suitable for an uninterruptible power system comprising a fan is provided. The volume control device comprises a user interface and a control circuit. The control circuit is electrically coupled to the fan and the user interface, and is used to receive a maximum operation volume setting value through the user interface. When the control circuit is ready to increase the rotation speed of the fan, it further determines whether the corresponding volume of the current rotation speed of the fan is less than the maximum operation volume setting value, and accordingly determines whether to adjust the rotation speed of the fan.

Abstract: The invention provides an uninterruptible power supply, which comprises a battery management circuit and a control circuit. The battery management circuit is electrically coupled to each battery of at least one battery string for measuring the voltage of each battery. When the battery strings discharge, the control circuit obtains the voltage of each battery through the battery management circuit to calculate the discharge current of each battery, and determines whether there is any measured voltage having dropped to an EOD voltage corresponding to a discharge current of a corresponding battery. When the determination result is positive, the control circuit controls the uninterruptible power system to stop the discharging of at least one battery string in which there is at least one measured voltage having dropped to an EOD voltage corresponding to a discharge current of a corresponding battery. Furthermore, a corresponding battery management apparatus is also provided.

Abstract: A method for controlling a parallel line-interactive uninterruptible power supply (UPS) system having multiple line-interactive UPSs parallelly connected, in which each line-interactive UPS has a switching element and a power output terminal connected to a load through the switching element, has a step of acquiring a switching status from the switching element when the switching element is switched to determine next switching time of the switching element so that the switching time is adjacent to a zero phase angle point of an input voltage cycle of the mains power. The method further has the switching elements of all line-interactive UPSs switched at the same time for all the line-interactive UPSs to evenly share the load, thereby preventing the line-interactive UPSs from being damaged due to concentrated load current on single line-interactive UPS arising from dramatically different switching time of the switching elements.

Abstract: A method for controlling uninterruptible and parallel power modules has steps of parallelly and unloadably connecting multiple power modules to a load, acquiring a number and a load wattage of the power modules connected to the load and an instant load ratio, calculating a simulated load ratio in accordance with a simulated number of the power modules and the load wattage, if the simulated load ratio is closer to a half load and the redundancy requirement is met, unloading at least one of the power modules connected to the load so that other power modules connected to the load can share the additional load released from the unloaded power modules and the load ratio and output efficiency of each power module connected to the load can be enhanced.