Pre-driver and power circuit including the same

摘要

Disclosed are a pre-driver having a modified circuit for gate pulse modulation and a power circuit including the same. The pre-driver includes a level shifter that outputs pulses having a phase difference and a gate pulse modulator that performs gate pulse modulation. The gate pulse modulator outputs a modulated gate pulse obtained by modulating a pulse by a reference voltage, and has a structure in which the number of switches provided therein is reduced.

主权项

1. A pre-driver comprising:
a level shifter including first and second output terminals which respectively output first and second pulses to have a phase difference, the first and second pulses respectively having first and second voltages; and a gate pulse modulator including a first switch to which a reference voltage having a level between the first voltage and the second voltage is applied and first second and second second switches which are commonly connected to the first switch, the first second switch being connected to the first output terminal and the second second switch being connected to the second output terminal, the gate pulse modulator being configured to provide the reference voltage to the first output terminal through the first switch and the first second switch in correspondence to shift of the first pulses, and provide the reference voltage to the second output terminal through the first switch and the second second switch in correspondence to shift of the second pulses, wherein modulated gate pulses generated as the first and second pulses are modulated by the reference voltage are outputted.