摘要:
A power converter for producing a reference voltage and method of operating the same. In one embodiment, the power converter is configured to receive an input voltage and includes a power train configured to produce a scaled voltage at a first voltage level being a scaled value of the input voltage. The power converter also includes a buffer amplifier having a slew resistive element coupled at a circuit node to a timing capacitive element and configured to receive the scaled voltage and provide a reference voltage as a function of a second voltage level at the circuit node and the scaled voltage.
摘要:
There is provided a current control circuit for a power converter. The power converter has a primary circuit for receiving a supply current across a first supply rail and a second supply rail. There is a primary connection in the primary circuit. The power converter also has a secondary circuit providing an output current. There is a secondary connection in the secondary circuit. The secondary connection is connected to the primary connection. A controller controls one or more switches in the primary circuit to control the output current. The nature of the power converter is such that it has a reactive circuit which produces a reactive current. The current control circuit comprises a current sensing circuit connected to bypass or cancel the reactive current. The controller is connected to the current sensing circuit and controls the one or more switches based on a signal current sensed by the current sensing circuit.
摘要:
The present invention relates in a first aspect to a galvanically isolated power converter assembly comprising a first set of electrically interconnected resonant power inverters configured for generating respective output voltages and output currents. The galvanically isolated power converter assembly further a first positive summing node and a first negative summing node configured to combining the output voltages and output currents of the first set of resonant power inverters and a first common load circuit comprising a positive load input and a negative load input. A galvanic isolation barrier comprises first and second common isolation capacitors electrically insulating the common load circuit. Each of the first and second common isolation capacitors possesses an official safety rating.
摘要:
There is described a dual-input single-output power supply with shared circuitry for the rectifying and power conversion stages and duplicated circuitry for the filtering and protection stages, and with a switching device to switch between the two inputs. Operation of the switching device is controlled according to the status of the input power feeds.