Abstract: A phase controlled drive circuit includes a drive circuit operable to provide gate signals to an SCR bridge circuit and a phase control circuit. The phase control circuit includes a first phase generator operable to generate a first phase signal, and a second phase generator operable to generate a second phase signal. The second phase signal is periodically reset to an initial value. A drive circuit actuator in the phase control circuit is operable to place the drive circuit in a first activation state when a sum of the first and second phase signals exceeds a threshold value, and is further operable to place the drive circuit in a second activation state when the sum of the first and second phase signals is less than the threshold value.

Abstract: A power supply unit includes a plurality of power trains and a control assembly. Each power train includes a power factor correction circuit that receives an AC input and generates a first DC output, and a DC/DC converter circuit that receives the first DC output and generates a second regulated DC output. The control assembly is coupled to the power trains and is operative to monitor outputs supplied by the power trains. In response to the power train outputs, the control assembly provides control signals to each power train.

Abstract: A DC/DC converter includes first and second bridges comprising a plurality of switch elements and a plurality of coupling capacitors. Each coupling capacitor couples one of the switch elements of the first bridge to one of the switch elements of the second bridge. The first and second bridges are connected to a transformer comprising a first primary winding, a second primary winding, and a secondary winding. A coupled inductor comprises first and second inductors and is connected to the transformer so that the first and second primary windings are inductively coupled through the coupled inductor.

Abstract: A power supply unit includes a plurality of power trains and a control assembly. Each power train includes a power factor correction circuit that receives an AC input and generates a first DC output, and a DC/DC converter circuit that receives the first DC output and generates a second regulated DC output. The control assembly is coupled to the power trains and is operative to monitor outputs supplied by the power trains. In response to the power train outputs, the control assembly provides control signals to each power train.

Abstract: A power system having a power factor correction circuit includes a power circuit. The power circuit includes first and second input capacitors, first and second coupled inductors, first and second switches, and an output circuit. The first and second input capacitors form a bank node. The first and second switches are connected to the first and second inductors and the bank node. Likewise, the first an second input capacitors are connected to the first and second inductors. The output circuit is operable to produce an output voltage. A control circuit is operable to monitor the output voltage and produce a switch signal. A drive circuit is coupled to the control circuit and the first and second switches and is operable to operate the first and second switches based on the switch signal.

Abstract: A phase controlled drive circuit includes a drive circuit operable to provide gate signals to an SCR bridge circuit and a phase control circuit. The phase control circuit includes a first phase generator operable to generate a first phase signal, and a second phase generator operable to generate a second phase signal. The second phase signal is periodically reset to an initial value. A drive circuit actuator in the phase control circuit is operable to place the drive circuit in a first activation state when a sum of the first and second phase signals exceeds a threshold value, and is further operable to place the drive circuit in a second activation state when the sum of the first and second phase signals is less than the threshold value.

Abstract: A DC/DC converter includes first and second bridges comprising a plurality of switch elements and a plurality of coupling capacitors. Each coupling capacitor couples one of the switch elements of the first bridge to one of the switch elements of the second bridge. The first and second bridges are connected to a transformer comprising a first primary winding, a second primary winding, and a secondary winding. A coupled inductor comprises first and second inductors and is connected to the transformer so that the first and second primary windings are inductively coupled through the coupled inductor.

Abstract: An inductive coupler comprises a first coil defining a first outer periphery and a second coil defining a second outer periphery. A metal member extends around the first and second outer peripheries of the first and second coils forming a conductive loop.

Abstract: A power system having a power factor correction circuit includes a power circuit. The power circuit includes first and second input capacitors, first and second coupled inductors, first and second switches, and an output circuit. The first and second input capacitors form a bank node. The first and second switches are connected to the first and second inductors and the bank node. Likewise, the first an second input capacitors are connected to the first and second inductors. The output circuit is operable to produce an output voltage. A control circuit is operable to monitor the output voltage and produce a switch signal. A drive circuit is coupled to the control circuit and the first and second switches and is operable to operate the first and second switches based on the switch signal.

Abstract: A power system includes a plurality of power supply units (“PSUs”), each PSU having an output that is coupled to the output of other PSUs in the power system. Each PSU includes a power factor correction (“PFC”) assembly for receiving an AC input and generating a first DC output. A DC/DC converter assembly is coupled to the PFC assembly, and receives the first DC output and generates a second regulated DC output. A control assembly is coupled to the DC/DC converter assembly, and is operative to monitor the DC/DC converter assembly output and in response thereto provide control signals to the DC/DC converter assembly.

Abstract: A power system includes a plurality of power supply units (“PSUs”), each PSU having an output that is coupled to the output of other PSUs in the power system. Each PSU includes a power factor correction (“PFC”) assembly for receiving an AC input and generating a first DC output. A DC/DC converter assembly is coupled to the PFC assembly, and receives the first DC output and generates a second regulated DC output. A control assembly is coupled to the DC/DC converter assembly, and is operative to monitor the DC/DC converter assembly output and in response thereto provide control signals to the DC/DC converter assembly.