A Novel High-Voltage Pseudo-p-LDMOS Device With Three Current Conductive Paths

A new concept high-voltage pseudo-p-channel lateral double-diffused MOS (p-LDMOS) with multiple current paths for conduction is proposed and investigated in this paper. The proposed power device consists of two hole current paths (p-channel MOS device) and one electron current path (n-channel MOS device). The gate of the n-channel device is automatically controlled by an induced signal inside the chip, thus the proposed device can be considered as a p-LDMOS with more than 66.2% reduction of specific on-resistance in comparison with the conventional p-LDMOS device. Furthermore, the proposed device has a much better safe operation area, since the compensation of the electric flux density brought by electron and hole currents.