Back to results
US 11,605,970 B2Granted
Persistent DC power and control switch
AssigneeEntrantech Inc.
InventorKong-Chen Chen
Life of this patent
Estimating the term…
Abstract
A DC switch with embedded de-multiplexing function links a plurality of DC switches in a priority chain and enables concurrent power switching between DC switches. The priority chain automatically selects a most cost-effective power for output to optimize energy utilization efficiency and with a just-in-time enable to activate standby-power to minimize energy waste in persistent DC power.
Claims29
A power transfer system comprising a first apparatus adapted to transfer power, the first apparatus comprising:
- a DC input port coupled to a DC power source;
- a DC output port;
- a power transfer device;
- a monitoring circuit which monitors operational status of the first apparatus and generates a monitoring output signal in response;
- a de-multiplexing circuit adapted to perform:
- a Boolean AND operation of the monitoring output signal and an activation input signal, received via an activation input port, to generate an enable control signal for the power transfer device, and
- a Boolean AND operation of an inverse of the monitoring output signal and the activation input signal to generate an activation output signal for a power linking control, wherein the power transfer device is disabled and the activation output signal is negated when the activation input signal is negated.
4 more elements
A system adapted to transfer power, the system comprising:
- a plurality switches arranged in a hierarchy to form a link, each switch associated with and receiving power from a different one of a plurality of DC power sources, each switch comprising:
- an input terminal adapted to receive the associated power;
- an input control signal which when asserted indicates that one or more switches having a priority higher than a priority of the switch do not have sufficient DC power;
- a comparator adapted to compare a voltage representative of the power received by the switch to a reference voltage in response to the assertion of the input control signal;
- a power transfer device adapted to transfer the power received at the input terminal to an output terminal of the switch if the voltage representative of the power received by the switch is detected by the comparator to be no less than the reference voltage;
- and
- an output signal that is asserted if the voltage representative of the power received by the switch is detected by the comparator to be less than the reference voltage, wherein the output signal of the switch is coupled to the input control signal of a next switch in a descending order of hierarchy.
4 more elements
Dependencies are inferred from the claim text.