Positive and negative voltage isolation circuit for output end of interface circuit

The invention belongs to a positive and negative voltage isolation circuit for an output end of an interface circuit, and belongs to the technical field of interface circuit control. The positive and negative voltage isolation circuit comprises a high-side driving isolation high-voltage circuit and...

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Bibliographic Details
Main Authors DING XIAOBING, PENG CONG, CHENG XUEBIN, SUO WUSHENG
Format Patent
LanguageChinese
English
Published 22.03.2024
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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Summary:The invention belongs to a positive and negative voltage isolation circuit for an output end of an interface circuit, and belongs to the technical field of interface circuit control. The positive and negative voltage isolation circuit comprises a high-side driving isolation high-voltage circuit and a low-side driving isolation high-voltage circuit; the high-side driving isolation high-voltage circuit comprises a first high-voltage NMOS (N-channel Metal Oxide Semiconductor) tube M1, a first high-voltage PMOS (P-channel Metal Oxide Semiconductor) tube M2, a first low-voltage PMOS tube M3 and a first diode D1; and the low-side driving isolation high-voltage circuit comprises a second high-voltage NMOS (N-channel Metal Oxide Semiconductor) tube M4, a second high-voltage PMOS (P-channel Metal Oxide Semiconductor) tube M5, a first low-voltage NMOS tube M6 and a second diode D2. According to the circuit design provided by the invention, the requirement of high voltage isolation of an interface circuit port can be me
Bibliography:Application Number: CN202311760701