| CPC H02H 9/045 (2013.01) | 13 Claims |
|
1. A transmitter, comprising:
a level shifter circuit, generating a plurality of first signals and a plurality of second signals based on an input signal, wherein a voltage range of the input signal, a voltage range of the first signals, and a voltage range of the second signals are different from each other;
an edge adjustment circuit, adjusting a level of a first node and a level of a second node according to the first signals and the second signals, and providing an overvoltage protection during the adjustment of the level of the first node and the level of the second node; and
a driver, generating an output signal according to the level of the first node and the level of the second node,
wherein the edge adjustment circuit comprises:
a first circuit, adjusting the level of the first node according to corresponding one of the second signals and the first signals to adjust a rising edge of the output signal; and
a second circuit, adjusting the level of the second node according to corresponding one of the first signals and the second signals to adjust a falling edge of the output signal; and
wherein the first circuit comprises:
a pull-down circuit, pulling down the level of the first node and adjusting a level of a control node according to the corresponding one of the second signals and the first signals; and
a protection circuit, providing the pull-down circuit with the overvoltage protection according to the level of the control node, a first voltage and a second voltage, wherein the first voltage is a lower limit of the voltage range of the first signals and the second voltage is an upper limit of the voltage range of the second signals.
|