Abstract: A method for controlling an output of an LDC converter of a vehicle is provided. The LDC charges and discharges an auxiliary battery supplying power to an electronic load using a high voltage battery for driving the vehicle. The method includes predicting a driving event of a front section of the vehicle based on driving route information and a SOC of the auxiliary battery in a driving event before the driving event of the front section of the vehicle. Output voltage of the low voltage DC-DC converter is converted and output to the electronic load or the auxiliary battery based on a comparison result between a current SOC of the auxiliary battery and the predicted SOC of the auxiliary battery. The predicted SOC is determined by a charge time of when a brake or accelerator pedal is engaged before the driving event of the front section of the vehicle.

Abstract: A system and method for controlling a low-voltage DC-DC converter (LDC) voltage of a hybrid vehicle are provided. The LDC voltage is optimally adjusted based on which driving mode the vehicle enters, thereby improving fuel efficiency. The method includes determining whether the hybrid vehicle is driven in a regenerative braking mode and whether a value of a state of charge (SOC) of an auxiliary battery is equal to or greater than a first critical value set as a value when charging of the auxiliary battery is unnecessary during the driving in the regenerative braking mode. When the value of the SOC of the auxiliary battery is equal to or greater than the predetermined first critical value, the driving mode is switched from the regenerative braking mode to an electric vehicle (EV) mode, and to variably adjust an LDC target voltage in the EV mode.

Abstract: A low power DC-DC converter (LDC) control circuit is provided and includes a detector, a storage, and an LDC. The detector detects an output voltage of the LDC and characteristic factors in a vehicle. The storage receives the characteristic factors and cumulatively stores the characteristic factors. The LDC controller initializes the characteristic factors cumulatively stored in the storage when a state of charge (SOC) of a battery of the vehicle is maintained to a preset value for a preset time while the LDC output voltage is maintained to be the same as in a refresh operation.

Abstract: An apparatus and method for controlling a converter are provided. The apparatus includes a battery and a sensor configured to sense the battery to generate sensor state of battery information. A converter controller is configured to acquire the sensor state of battery information and vehicle state information received from a vehicle controller to calculate calibrated state of battery information based on whether a correction execution condition on the sensor state of battery information is satisfied. In addition, the converter controller uses the calibrated state of battery information and the sensor state of battery information to calculate an error correction value and uses the error correction value to calculate actual state of battery information. A converter is then configured to supply power to the battery based on the sensor state of battery information or the actual state of battery information.