APPARATUS AND METHOD FOR ENHANCED TRANSIENT BLOCKING
摘要
An apparatus and method for enhanced transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device. The interconnection is performed such that a transient alters a bias voltage V<SUB>p</SUB> of the p-channel device and a bias voltage V<SUB>n</SUB> of the n-channel device such that the p-and n-channel devices mutually switch off to block the transient. The apparatus has an enhancer circuit for applying an enhancement bias to a gate terminal of at least one of the depletion mode n-channel devices of the TBU to reduce a total resistance R<SUB>tot</SUB>of the apparatus. Alternatively, the apparatus has an enhancement mode NMOS transistor and a TBU connected thereto to help provide an enhancement bias to a gate terminal of the enhancement mode NMOS.
