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CN107425701B 延迟时间校正电路、半导体器件驱动电路以及半导体装置 有权

延迟时间校正电路、半导体器件驱动电路以及半导体装置
摘要：
在使用简单的结构的同时精密地校正来自半导体开关元件的输出相对于输入信号的信号宽度偏差。延迟时间校正电路(601)使输入信号(IN)延迟而生成向驱动部(500)提供的预驱动信号(VPD)，驱动部生成驱动信号(VG)。暂态变化检测部(2)检测导通动作及截止动作中的一方动作的暂态变化。校正信号生成部(3)基于输入信号和由暂态变化检测部检测出的暂态变化生成校正信号(AS)。延迟输出部(4)使用校正信号而使输入信号延迟，由此生成与预驱动信号对应的输出信号。在延迟输出部中，使得对导通动作以及截止动作中的与一方动作不同的另一方动作进行指示的输出信号，对应于此前最近进行的一方动作的暂态变化的期间的长度而相对于输入信号延迟。
摘要（英）：

A delay-time correction circuit delays an input signal for generating a pre-drive signal to a drive unit generating a drive signal. A transition-change sensor senses a transition change in one of a turn-on operation and turn-off operation. A correction-signal generator generates a correction signal in response to the transition change sensed by the transition-change sensor and to the input signal. A delay output unit generates an output signal corresponding to the pre-drive signal by delaying the input signal using the correction signal. The delay output unit delays the output signal that instructs the other of a turn-on operation and turn-off operation, from the input signal, in accordance with a length of a period for the transition change in the one of a turn-on operation and turn-off operation that is performed immediately before the other of a turn-on operation and turn-off operation.

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