Electronic devices

An electronic device, comprising:

• a power management circuit (PMIC) including a plurality of direct current (DC)-DC converters, the plurality of DC-DC converters configured to generate a plurality of power supply voltages, respectively, based on a battery voltage;
• a plurality of voltage devices distributed in the PMIC, the plurality of voltage devices configured to generate a plurality of temperature voltages that are inversely proportional to an ambient temperature;
• and
• a time division sensing circuit configured to:
• convert the plurality of temperature voltages to a plurality of sensed voltages;
• generate a first sub decision signal by comparing each of the plurality of sensed voltages with a reference voltage by a first time division scheme during a sensing period;
• generate a second sub decision signal by comparing each of the plurality of sensed voltages with the reference voltage by a second time division scheme during the sensing period;
• generate a decision signal, indicating that at least one of the plurality of sensed voltages is equal to or smaller than the reference voltage, based on the first sub decision signal and the second sub decision signal;
• and
• provide the decision signal to the PMIC, and
• wherein the PMIC is configured to perform a thermal shutdown on at least one of the plurality of DC-DC converters in response to the decision signal indicating that at least one sensed voltage of the plurality of sensed voltages is equal to or smaller than the reference voltage.

An electronic device, comprising:

• a power management circuit (PMIC) including a plurality of direct current (DC)-DC converters, the plurality of DC-DC converters configured to generate a plurality of power supply voltages, respectively, based on a battery voltage;
• a plurality of voltage devices distributed in the PMIC, the plurality of voltage devices configured to generate a plurality of temperature voltages that are inversely proportional to an ambient temperature;
• and
• a time division sensing circuit configured to:
• convert the plurality of temperature voltages to a plurality of sensed voltages;
• generate a decision signal based on a result of comparing each of the plurality of sensed voltages with a reference voltage by a time division scheme during a sensing period, wherein the decision signal indicates that at least one sensed voltage of the plurality of sensed voltages is equal to or small than the reference voltage;
• and
• provide the decision signal to the PMIC,
• wherein the PMIC is configured to perform a thermal shutdown on at least one of the plurality of DC-DC converters in response to the decision signal indicating that the at least one sensed voltage of the plurality of sensed voltages is equal to or smaller than the reference voltage,
• wherein the plurality of voltage devices include a plurality of bipolar junction transistors (BJTs) or a plurality of diodes,
• wherein each BJT of the plurality of BJTs or each of the plurality of diodes is disposed in a respective DC-DC converter of the plurality of DC-DC converters or disposed adjacent to the respective DC-DC converter of the plurality of DC-DC converters, and
• wherein the time division sensing circuit includes:
• a plurality of sensing circuits configured to convert the plurality of temperature voltages to the plurality of sensed voltages, respectively;
• a multiplexer configured to provide a selected voltage by sequentially selecting the plurality of sensed voltages in response to first timing control signals;
• a comparator configured to generate a comparison signal by comparing the selected voltage with the reference voltage;
• a latch configured to provide the decision signal by latching the comparison signal based on second timing control signals;
• and
• a controller configured to generate the first timing control signals and the second timing control signals based on a clock signal.