ELECTRONIC CONTROL UNIT AND FAULT INFORMATION TRANSMISSION CIRCUIT

The present application relates to an Electronic Control Unit (ECU), which includes a first chip and a second chip. The first chip comprises a first fault information transmission circuit, and the second chip comprises a second fault information transmission circuit. The first fault information transmission circuit comprises: a single fault pin, coupled to the fault pin of the second chip, configured to transmit and receive fault information; a current detection circuit, configured to detect whether current is present in the first fault information transmission circuit; a voltage regulation unit, configured to receive a voltage input from within the first chip and to output a fault voltage only when a fault is present in the voltage input; a back-to-back protection circuit, coupled between the single fault pin and the voltage regulation unit; and a fault monitoring circuit, configured to monitor the fault voltage output by the voltage regulation unit or the fault information received by the single fault pin from the second chip. The present application further relates to a fault information transmission circuit.