Lg Chem, Ltd

Casco Products Corporation

Chieh-Kai Chang

Mehdi Rexha

Kerfegar Khurshed Katrak

Kunal Tipnis

Su Hyuk Jang

Gary Lee Firman, Ii

Jaesam Lee

Benyu Zou

William Awad

Carlos Daniel Diaz De Leon Miranda

Joshua Frederick Hartwig

A power supply and an automotive topology that includes the power supply, the power supply having an integrated module, which includes in a common, shared module housing, a start-stop DC/DC converter, a DC/AC converter, and an auxiliary DC/DC converter, which bypasses stop/start during non-stop/start operation. A DC input port connected to the start-stop DC/DC converter, DC/AC converter, and the auxiliary DC/DC converter. A DC output port connected to the start-stop DC/DC converter to supply DC to critical loads of a motor vehicle, even during vehicle OFF mode. An AC output port connected to the DC/AC converter to supply AC to an external component.

Power supply

A diagnostic system for a DC-DC voltage converter having a high voltage switch, a low voltage switch, and a DC-DC voltage converter control circuit is provided. The system includes first and second tri-state buffer ICs and a microcontroller. The first tri-state buffer IC receives a first shutdown indicator voltage from the DC-DC voltage converter control circuit indicating that a first plurality of FET switches in a high side FET IC and a second plurality of FET switches in a low side FET IC have been transitioned to an open operational state. The first tri-state buffer IC outputs a second shutdown indicator voltage to the microcontroller that indicates that the first and second plurality of FET switches have been transitioned to the open operational state.

Diagnostic system for a DC-DC voltage converter

A diagnostic system for a DC-DC voltage converter is provided. A first temperature sensor generates a first temperature signal associated with a buck mode integrated circuit. A first analog multiplexer outputs the first temperature signal to a first analog-to-digital converter which generates a first temperature value. A second temperature sensor generates a second temperature signal associated with a boost mode integrated circuit. A second analog multiplexer outputs the second temperature signal to a second analog-to-digital converter which generates a second temperature value. A microcontroller generates control signals to command first and second bi-directional switches in the DC-DC voltage converter to each transition to an open operational state if the first temperature value is greater than a first threshold temperature value.

A power supply system having a detection system for determining an unbalanced current condition and an over-current condition in a DC-DC voltage converter is provided. The detection system has a detection circuit that outputs a first diagnostic voltage indicating an unbalanced current condition between first and second switching banks in the DC-DC voltage converter based on a first voltage and an average voltage, or an over-current condition in the first switching bank based on the first voltage. The detection circuit outputs a second diagnostic voltage indicating the unbalanced current condition between the first and second switching banks in the DC-DC voltage converter based on a second voltage and the average voltage, or an over-current condition in the second switching bank based on the second voltage.

Power supply system and detection system for determining an unbalanced current condition and an overcurrent condition in a DC-DC voltage converter

A control system for controlling a DC-DC voltage converter circuit is provided. An output voltage controller outputs a DC-DC voltage converter control voltage to an input control terminal to increase a switching duty cycle within the DC-DC voltage converter circuit when the low voltage is less than an output reference voltage. An input voltage controller reduces the DC-DC voltage converter control voltage at the input control terminal of the DC-DC voltage converter circuit when a high voltage is less than an input reference voltage to reduce the switching duty cycle within the DC-DC voltage converter circuit.

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Grosse Pointe Woods, MI, United States of America

Chieh-Kai Chang