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US 2019/0379299 A1Published application
Power conversion device
AssigneeDenso Corporation
InventorTakashi IMURA
Life of this patent
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Abstract
A power conversion circuit is provided. The power conversion circuit includes a bridge circuit connected between power input terminals, a drive circuit supplied with power from a DC power source via the power input terminals, a boost circuit for, when the DC power source is reversely connected, starting up and supplying power to a control circuit, and a reverse voltage detection circuit for detecting a reverse voltage generated when the DC power source is reversely connected.
Claims8
A power conversion device comprising:
- a bridge circuit that is connected between first and second power-input-terminals;
- a driving circuit that is supplied with power from a DC power source via the first and second power-input-terminals, and that drives and controls the bridge circuit;
- a control circuit that is capable of writing data into a non-volatile storage device;
- and
- a boost circuit that starts up and performs a boost operation to supply power to the control circuit when the DC power source is connected in reverse polarity to the first and second power-input-terminals;
- and
- a reverse voltage detection circuit that detects a reverse voltage generated when the DC power source is connected in the reverse polarity to the first and second power-input-terminals,
- wherein
- when the boost circuit starts up, the control circuit is supplied with the power and records in the non-volatile storage device a state of the reverse voltage detected by the reverse voltage detection circuit.
6 more elements
Dependencies are inferred from the claim text.