High side switch protection for power over coaxial cable systems
AssigneeConnaught Electronics Ltd.
InventorsBeniamin Dragoi, Sergio Bantiles
Life of this patent
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Abstract
A system having a load device coupled to an output of an electronic control unit (ECU) via a coaxial cable, and the ECU is disclosed. The ECU has a power supply configured to provide power for the load device, a power over coaxial cable (PoC) filter coupled to the output, a high side switch (HSS) coupled to the power supply and to the PoC filter via an HSS output line, and a diode disposed in the HSS output line and configured to substantially eliminate current flow from the output towards the HSS, while allowing current to flow from the HSS towards the load device from the HSS.
Claims16
A system, comprising:
- a load device coupled to an output of an electronic control unit (ECU) via a coaxial cable;
- and
- the ECU, comprising:
- a power supply configured to provide power for the load device;
- a power over coaxial cable (PoC) filter coupled to the output;
- a high side switch (HSS) coupled to the power supply and to the PoC filter via an HSS output line;
- and
- a diode disposed in the HSS output line and configured to substantially eliminate current flow from the output towards the HSS, while allowing current to flow from the HSS towards the load device from the HSS.
A method, comprising:
- configuring an electrical control unit (ECU) to include a diode positioned between a high side switch (HSS) and a load device;
- providing power to the load device from the ECU;
- detecting a short-to-battery event;
- and
- using the diode to prevent current flow to the HSS from a position of the short-to-battery event.
Dependencies are inferred from the claim text.