System and Method for a Pre-Driver Circuit

摘要

A drive circuit includes an input, a driver, a first buffer, a second buffer, a first capacitance element, and a second capacitance element. The driver includes a first PMOS transistor and a first NMOS transistor coupled in series between a supply terminal and a reference terminal. The first buffer is coupled between the input and a control terminal of the first PMOS transistor. The second buffer is coupled between the input and a control terminal of the first NMOS transistor. The first capacitance element is coupled to the control terminal of the first PMOS transistor through a first semiconductor switch. The second capacitance element is coupled to the control terminal of the first NMOS transistor through a second semiconductor switch.

主权项

1. A circuit comprising:
a driver having an input terminal and an output terminal; a semiconductor switch having a first terminal and a second terminal, the first terminal of the semiconductor switch coupled to the output terminal of the driver; and a capacitance element coupled between the second terminal of the semiconductor switch and a power supply terminal, wherein
the semiconductor switch and the capacitance element comprise a variable capacitance,the variable capacitance is controlled such that
the variable capacitance provides a capacitance of substantially zero during a first portion of a data transition in the output terminal of the driver from a first state to a second state, andthe variable capacitance provides a non-zero capacitance during a second portion of a data transition in the output terminal of the driver from the first state to the second state.