Abstract: A power control system of a rack heat-dissipation system, which receives output voltages of a rack power supply and a module power supply, includes a first control module and a second control module operating in parallel. The first control module includes a first switching unit, a first voltage converting unit and a first monitoring unit. The second control module includes a second switching unit, a second voltage converting unit and a second monitoring unit. The first monitoring unit is connected to the rack power supply, the module power supply, the first switching unit and the first voltage converting unit, and the second monitoring unit is connected to the rack power supply, the module power supply, the second switching unit and the second voltage converting unit. The heat dissipation system can be kept in the normal operation even if one of the control modules is failed.

Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 33% to 42%.

Abstract: A power supply device, a power supply management module and method are provided. The power supply device includes a power supply management module. The power supply management module includes a first and a second power supply module, a detection unit, and a switching control module. The first power supply module includes a first alternating current input end, a first rectifier circuit, and a first switch unit. A first end of the first switch unit is connected to the first rectifier circuit. The second power supply module includes a second alternating current input end, a second rectifier circuit, and a second switch unit. A third end and a fourth end of the second switch unit are connected to the second rectifier circuit and a second end of the first switch unit, respectively. The switching control module controls the first and the second switch unit according to a detection signal.

Abstract: A power supply with lightning protection includes a surge voltage suppression apparatus, an electromagnetic interference control circuit, a surge current bypass apparatus, an active bridge rectifier circuit, a power factor correction circuit, and a DC-to-DC conversion circuit. The surge voltage suppression apparatus is used to increase a tolerance of a surge voltage for the power supply. The electromagnetic interference control circuit is coupled to the surge voltage suppression apparatus. The surge current bypass apparatus is used to increase a tolerance of a surge current for the power supply. The active bridge rectifier circuit is used to rectify an input voltage. The power factor correction circuit is used to adjust the rectified input voltage to provide an adjusted input voltage on a bulk capacitor. The DC-to-DC conversion circuit is used to convert the adjusted input voltage into a DC output voltage.

Abstract: A power supply device, a power supply management module and method are provided. The power supply device includes a power supply management module. The power supply management module includes a first and a second power supply module, a detection unit, and a switching control module. The first power supply module includes a first alternating current input end, a first rectifier circuit, and a first switch unit. A first end of the first switch unit is connected to the first rectifier circuit. The second power supply module includes a second alternating current input end, a second rectifier circuit, and a second switch unit. A third end and a fourth end of the second switch unit are connected to the second rectifier circuit and a second end of the first switch unit, respectively. The switching control module controls the first and the second switch unit according to a detection signal.

Abstract: A power supply with lightning protection includes a surge voltage suppression apparatus, an electromagnetic interference control circuit, a surge current bypass apparatus, an active bridge rectifier circuit, a power factor correction circuit, and a DC-to-DC conversion circuit. The surge voltage suppression apparatus is used to increase a tolerance of a surge voltage for the power supply. The electromagnetic interference control circuit is coupled to the surge voltage suppression apparatus. The surge current bypass apparatus is used to increase a tolerance of a surge current for the power supply. The active bridge rectifier circuit is used to rectify an input voltage. The power factor correction circuit is used to adjust the rectified input voltage to provide an adjusted input voltage on a bulk capacitor. The DC-to-DC conversion circuit is used to convert the adjusted input voltage into a DC output voltage.

Abstract: A power supply apparatus includes a full-wave rectifying circuit for converting an AC input voltage to a rectified voltage and a controller coupled to the full-wave rectifying circuit. The full-wave rectifying circuit includes a first switching circuit and a second switching circuit. During a general stage, the controller controls the first or second switching circuit to perform an active rectifying operation once an absolute value of the AC input voltage is greater than a lower bound voltage. During an initialization stage, the full-wave rectifying circuit performs a passive rectifying operation to convert the AC input voltage to the rectified voltage, and the controller controls the first or second switching circuit to switch from performing the passive rectifying operation to performing the active rectifying operation once the absolute value of the AC input voltage reaches or exceeds an upper bound voltage.

Abstract: A power conversion module includes a circuit board and a transformer mounted on the circuit board. The transformer includes a primary winding, a plurality of secondary windings, and a magnetic core assembly. The secondary winding includes a plurality of conductive plates each has a main body, two pins and two intermediate segments. The two pins extends along a first direction and couples to the main body via intermediate segments extending along a second direction; the transformer is electrically connected to the circuit board through the pins; wherein the main body has an opening, and the intermediate segments are positioned at two sides of the opening. The magnetic core assembly includes a middle post, and a coil section of the primary winding and the main bodies of the conductive plates are arranged in a staggered configuration and surround the middle post.

Abstract: The present disclosure relates to a power conversion system. A first boosting circuit of the power conversion system is coupled between a first energy storage element and a second energy storage element. A switching element of the power conversion system is coupled to the first boost circuit in parallel. When the first voltage value is lower than a first preset level, the control circuit turns off the switching element and drives the first booster circuit to maintain a second voltage value according to the first voltage value, so that the power conversion system operates in a first state. When the first voltage value is equal to or larger than the first preset level, the control circuit turns on the switching element and turns off the first boost circuit, so that the power conversion system operates in a second state.

Abstract: A power conversion system includes a first and a second energy storage element, a first boost circuit, a switching element, a control circuit and a detection circuit. The first boost circuit is coupled between the first and the second energy storage element. The switching element is coupled to the first boost circuit in parallel. When the first voltage value is lower than a first preset level, the control circuit turns off the switching element and drives the first booster circuit to maintain a second voltage value according to the first voltage value, so that the power conversion system operates in a first state. When the first voltage value is equal to or larger than the first preset level, the control circuit turns on the switching element and turns off the first boost circuit, so that the power conversion system operates in a second state.

Abstract: A power conversion system is provided. The system includes a switch module, a resonant module, a magnetic conversion module, a bobbin and an iron core. The magnetic conversion module includes a primary winding and a PCB winding module. The PCB winding module includes a printed circuit board, a conductive layer disposed on at least one surface of the printed circuit board, and a switch unit disposed on the printed circuit board.

Abstract: The present disclosure is related to a voltage conversion module which includes a front side magneto-sensitive unit, at least one voltage conversion unit, a core group, and a bobbin. The bobbin includes a first accommodating part, a second accommodating part, and a through hole. The first accommodating part is used for accommodating the front side magneto-sensitive unit. The second accommodating part is used for accommodating the at least one voltage conversion unit. The through hole is used for accommodating the core group. The second accommodating part includes first and second openings. The first opening is disposed at one side of the second accommodating part. The second opening is disposed at another side of the second accommodating part. The first and second openings are disposed opposite to each other, and a heat dissipation channel is formed between the first opening, the second opening and the at least one voltage conversion unit.

Abstract: The present disclosure is related to a voltage conversion module which includes a front side magneto-sensitive unit, at least one voltage conversion unit, a core group, and a bobbin. The bobbin includes a first accommodating part, a second accommodating part, and a through hole. The first accommodating part is used for accommodating the front side magneto-sensitive unit. The second accommodating part is used for accommodating the at least one voltage conversion unit. The through hole is used for accommodating the core group. The second accommodating part includes first and second openings. The first opening is disposed at one side of the second accommodating part. The second opening is disposed at another side of the second accommodating part. The first and second openings are disposed opposite to each other, and a heat dissipation channel is formed between the first opening, the second opening and the at least one voltage conversion unit.

Abstract: A power conversion system is provided. The system includes a switch module, a resonant module, a magnetic conversion module, a bobbin and an iron core. The magnetic conversion module includes a primary winding and a PCB winding module. The PCB winding module includes a printed circuit board, a conductive layer disposed on at least one surface of the printed circuit board, and a switch unit disposed on the printed circuit board.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate has a first axial direction and a second axial direction perpendicular to the first axial direction. The driving module is located on one side of the first substrate, the converting module is located on the other side of the first substrate, and includes a second substrate parallel to the main plate, wherein two opposite sides of the first substrate are inserted into the main plate and the second substrate. A length of the converting module is equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate having a first axial direction and a second axial direction perpendicular to the first axial direction is inserted into the main plate to make the second axial direction be perpendicular to the main plate. The driving module is located on one side of the first substrate, and the converting module is located on the other side of the first substrate and includes a second substrate, wherein the second substrate is inserted into the main plate. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate having a first axial direction and a second axial direction perpendicular to the first axial direction is inserted into the main plate to make the second axial direction be perpendicular to the main plate. The driving module is located on one side of the first substrate, and the converting module is located on the other side of the first substrate and includes a second substrate, wherein the second substrate is inserted into the main plate. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.