Semiconductor die with transformer and ESD clamp circuit

A semiconductor die includes a transformer in which a terminal of a first winding is electrically coupled to an external die terminal of the semiconductor die. An end of a second winding of the transformer is coupled to an internal circuit of the semiconductor die. An ESD clamp circuit is electrically coupled to a center tap of the second winding of the transformer. When turned on during an ESD event, the ESD clamp circuit releases an ESD current between the center tap and a power rail. 一种半导体管芯包括变压器，其中第一绕组的端电耦合到所述半导体管芯的外部管芯端。所述变压器的第二绕组的端耦合到所述半导体管芯的内部电路。ESD箝位电路电耦合到所述变压器的所述第二绕组的中心抽头。当在ESD事件期间导通时，所述ESD箝位电路在所述中心抽头与电源轨之间释放ESD电流。