Sigma, delta and sigma-delta DC/DC converters for wide input and output voltage ranges
AssigneeDelta Electronics, Inc.
InventorsLaszlo Huber, Tomas Sadilek, Misha Kumar, Zhiyu Shen, Jinfa Zhang, Chia-Hsiong Huang, Peter Mantovanelli Barbosa
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Abstract
A DC/DC converter may be formed out of the combination of a first converter that is optimized to transfer energy from a voltage source to a load, and a second converter that receives a control signal derived from the load voltage to regulate the load voltage. The DC/DC converter may be configured as a sigma converter, a delta converter, or a sigma-delta converter. The mode of operation being selected according to the source voltage or the load voltage, either of which may vary over a wide range.
Claims52
A converter receiving a source voltage from a voltage source and providing an output voltage across a load, the converter comprising:
- a first DC/DC converter having an input port and first and second output ports;
- and
- a second DC/DC converter having an input port and an output port and receiving a control signal derived from the output voltage;
- and
- wherein (i) the input ports of the first and the second DC/DC converters are connected in series across the voltage source, configured such that the voltage across the input port of the first DC/DC converter is less than the source voltage;
- (ii) the first output port of the first DC/DC converter providing the output voltage;
- (iii) the second output port of the first DC/DC converter and the output port of the second DC/DC converter are connected in parallel, and (iv) the second DC/DC converter regulates the output voltage based on the control signal.
A converter receiving a source voltage from a voltage source and providing an output voltage across a load, the converter comprising:
- a first DC/DC converter having an input port receiving the source voltage across the voltage source and an output port;
- and
- a second DC/DC converter having an input port and an output port and receiving a control signal derived from the output voltage;
- and
- wherein (i) the output ports of the first and the second DC/DC converters are connected in series to provide the output voltage across the load, configured such that the voltage across the output port of the first DC/DC converter is less than the load voltage;
- and (ii) the second DC/DC converter regulates the output voltage based on the control signal.
A converter receiving a source voltage from a voltage source and providing an output voltage across a load, the converter comprising:
- a first DC/DC converter having an input port and an output port, the output port being connected across the load;
- and
- a second DC/DC converter having an input port and an output port and receiving a control signal derived from the output voltage;
- and
- wherein (i) the input port of the first DC/DC converter and the output port of the second DC/DC converter are connected in series across the voltage source, configured such that the voltage across the input port of the first DC/DC converter is greater than the source voltage;
- (ii) the second DC/DC converter regulates the output voltage based on the control signal and (iii) the voltage source and the first DC/DC converter are referenced to a common ground voltage.
A converter receiving a source voltage from a voltage source and providing an output voltage across a load, the converter comprising:
- a first DC/DC converter having an input port and an output port;
- and
- a second DC/DC converter having a first input/output port and a second input/output port, wherein the second DC/DC converter is bidirectional and receives a control signal that is derived from the output voltage;
- and
- wherein (i) the input port of the first DC/DC converter and the first input/output port of the second DC/DC converter are connected in series across the voltage source;
- and (ii) only the second DC/DC converter regulates the output voltage based on the control signal.
Dependencies are inferred from the claim text.