DC-DC switching cell modules for on-board power systems
First Claim
1. A distributed power system comprising a centralized controller, a multiplexer, a plurality of DC-DC switching cell modules, and a plurality of loads, each DC-DC switching cell module adapted to generate a DC output voltage from a DC input voltage, each DC-DC switching cell module including at least one switch, an output filter, an inductor coupled to the output filter, and an input port for receiving a PWM control signal from the centralized controller, a first DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a first one of the plurality of loads, a second DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a second one of the plurality of loads, the centralized controller configured to output a first PWM control signal to the input port of the first DC-DC switching cell module and a second PWM control signal to the input port of the second DC-DC switching cell module to thereby control the power provided to the first one and the second one of the plurality of loads, the multiplexer coupled to receive a plurality of output voltages from the plurality of switching cell modules, the centralized controller configured to sample the plurality of output voltages one at a time via the multiplexer, and the multiplexer coupled to receive output voltages from less than all of the plurality of switching cell modules.
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Accused Products
Abstract
A DC-DC switching cell module includes a switch, a rectifier, an output filter coupled to the rectifier, and an input port for receiving an external PWM control signal from a controller. The switching cell module is configured to control the switch in response to the external PWM control signal to generate a DC output voltage from a DC input voltage. The switching cell module is configured for attachment to a circuit board as a discrete component.
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Citations
39 Claims
- 1. A distributed power system comprising a centralized controller, a multiplexer, a plurality of DC-DC switching cell modules, and a plurality of loads, each DC-DC switching cell module adapted to generate a DC output voltage from a DC input voltage, each DC-DC switching cell module including at least one switch, an output filter, an inductor coupled to the output filter, and an input port for receiving a PWM control signal from the centralized controller, a first DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a first one of the plurality of loads, a second DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a second one of the plurality of loads, the centralized controller configured to output a first PWM control signal to the input port of the first DC-DC switching cell module and a second PWM control signal to the input port of the second DC-DC switching cell module to thereby control the power provided to the first one and the second one of the plurality of loads, the multiplexer coupled to receive a plurality of output voltages from the plurality of switching cell modules, the centralized controller configured to sample the plurality of output voltages one at a time via the multiplexer, and the multiplexer coupled to receive output voltages from less than all of the plurality of switching cell modules.
- 16. A distributed power system comprising an external controller, a first DC-DC switching cell module for supplying a DC output voltage to a first load, and a second DC-DC switching cell module for supplying a DC output voltage to a second load, the first and second DC-DC switching cell modules each including a switch, an output filter, an inductor coupled to the output filter, and an input port for receiving a PWM control signal from the external controller, the external controller configured to provide a first PWM control signal to the input port of the first DC-DC switching cell module and a second PWM control signal to the input port of the second DC-DC switching cell module, the first DC-DC switching cell module configured to generate a first DC output voltage from a DC input voltage in response to the first PWM control signal from the external controller, the second DC-DC switching cell module configured to generate a second DC output voltage from a DC input voltage in response to the second PWM control signal from the external controller, the first DC-DC switching cell module coupled to output the first DC output voltage to a voltage bus, and the second DC-DC switching cell module including a DC voltage input port connected to the voltage bus.
- 31. A distributed power system comprising a centralized controller, a plurality of DC-DC switching cell modules, and a plurality of loads, each DC-DC switching cell module adapted to generate a DC output voltage from a DC input voltage, each DC-DC switching cell module including at least one switch, an output filter, an inductor coupled to the output filter, and an input port for receiving a PWM control signal from the centralized controller, a first DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a first one of the plurality of loads, a second DC-DC switching cell module of the plurality of DC-DC switching cell modules coupled to provide power to a second one of the plurality of loads, the centralized controller configured to output a first PWM control signal to the input port of the first DC-DC switching cell module and a second PWM control signal to the input port of the second DC-DC switching cell module to thereby control the power provided to the first one and the second one of the plurality of loads, at least one of the plurality of switching cell modules configured to provide a DC output voltage to a voltage bus, and at least one of the plurality of switching cell modules including a DC voltage input port connected to the voltage bus.
Specification