Convertor circuit and failure reporting method

A convertor circuit, comprising:

• a plurality of power stage circuits, comprising a plurality of current feedback terminals and a plurality of temperature feedback terminals;
• and
• a control circuit, coupled to the plurality of current feedback terminals, coupled with the plurality of temperature feedback terminals at a node, and configured to receive a highest temperature signal through the node, to obtain a highest temperature value of the plurality of power stage circuits according to the highest temperature signal, wherein the plurality of power stage circuits are configured to output a plurality of current feedback signals to the control circuit through the plurality of current feedback terminals;
• wherein in response to at least one failure event of at least one of the plurality of power stage circuits, the at least one of the plurality of power stage circuits controls the highest temperature signal to be in a preset voltage level, and outputs at least corresponding one of the plurality of current feedback signals, which comprises at least one failure code signal, to the control circuit through at least corresponding one of the plurality of current feedback terminals, and wherein the at least one failure code signal comprises a corresponding pulse count or data code capable of indicating the at least one failure event of the at least one of the plurality of power stage circuits;
• wherein after the at least one of the plurality of power stage circuits completes a synchronization with the control circuit, the at least one of the plurality of power stage circuits outputs the at least one failure code signal to the control circuit through the at least corresponding one of the plurality of current feedback terminals;
• wherein during a period when the at least one of the plurality of power stage circuits performs the synchronization with the control circuit, a voltage level of the at least corresponding one of the plurality of current feedback signals is changed to another preset voltage level different from the preset voltage level.

A failure reporting method, applicable to a convertor circuit, wherein the convertor circuit comprises a plurality of power stage circuits and a control circuit, the control circuit is coupled with a plurality of temperature feedback terminals of the plurality of power stage circuits at a node, and is configured to receive a highest temperature signal through the node, and the failure reporting method comprises:

• in response to at least one failure event of at least one of the plurality of power stage circuits, controlling, by the at least one of the plurality of power stage circuits, the highest temperature signal to be in a preset voltage level;
• when the highest temperature signal is in the preset voltage level, performing, by the at least one of the plurality of power stage circuits, a synchronization with the control circuit, wherein by the at least one of the plurality of power stage circuits, performing the synchronization with the control circuit comprises:
• by the at least one of the plurality of power stage circuits and the control circuit, simultaneously delaying at least one first clock signal of the at least one of the plurality of power stage circuits and a second clock signal of the control circuit by a preset time;
• and
• outputting, by the at least one of the plurality of power stage circuits, at least one failure code signal to the control circuit through at least corresponding one of a plurality of current feedback terminals of the plurality of power stage circuits.