Driver chip, bidirectional power device and manufacturing method

Abstract

This application provides a driver chip, a bidirectional power device, and a manufacturing method, relating to the field of integrated circuit design technology. The driver chip is used to drive a bidirectional power element and modulate the substrate potential of the bidirectional power element. The bidirectional power element includes a first power terminal, a second power terminal, a control terminal, and a substrate potential terminal. The driver chip includes a driving circuit and a substrate potential modulation circuit, which are formed on the same substrate. The substrate potential modulation circuit receives signals from the control terminal, the first power terminal, and / or the second power terminal, and is connected to the substrate potential terminal to make the voltage at the substrate potential terminal of the bidirectional power element substantially consistent with the lower of the voltages at the control terminal, the first power terminal, and the second power terminal. This application aims to provide a technical solution that does not increase the additional cost and parasitic parameters of the bidirectional power element, and can achieve control over the substrate potential of the bidirectional power element.

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