System and method for performing diagnostics on a DC-DC converter

• Main Authors: Conell, Jonathan O, De Stefano, Robert A
• Format: Patent
• Language: English
• Published: 27.08.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; BLASTING; CHECKING-DEVICES; COMBUSTION ENGINES; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATING RANDOM NUMBERS; GENERATION; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR; STARTING OF COMBUSTION ENGINES; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS; WEAPONS

In an example, a vehicle diagnostic system is disclosed. The vehicle diagnostic system includes a first DC-DC converter having an input and an output and a second DC-DC converter having an input and an output. The output of the first DC-DC converter is connected to the input of the second DC-DC converter at a first node, and the output of the second DC-DC converter is connected to the input of the first DC-DC converter at a second node. The vehicle diagnostic system includes a battery connected to a vehicle load and the first node and a redundant power source connected to the second node. The vehicle diagnostic system includes a control module that is configured to initiate operation of the first DC-DC converter and the second DC-DC converter to cause current re-circulation between the first DC-DC converter and the second DC-DC converter.