| 摘要 |
<p>The present invention relates to a device for generating a current control signal comprising a frequency distributor, a timing control unit, a clock signal generation unit, and a frequency selection unit. The frequency distributor receives input signals, distributes the frequency of the input signals into a first size and a second size, and outputs a first frequency distribution signal and a second frequency distribution signal. The timing control unit outputs the final frequency distribution signal in which a frequency size is reduced by receiving and multiplying the first and second frequency distribution signals and the input signals. The clock signal generation unit outputs final overcurrent generation sensing signals which have pulse signal types to control the current when overcurrent is generated according to the state of the overcurrent generation sensing signals and determines the frequency size of the pulse signal by using an RS latch operation based on the final frequency distribution signal or the input signals according to a short circuit. The frequency selection unit selects one of the final frequency distribution signals and the input signals and outputs the same as a reference pulse signal according to the short circuit in response to the state of a short circuit sensing signal and a reverse short circuit sensing signal. The present invention is provided to reduce the size of the pulse width of a pulse width modulation signal applied to a DC-DC converter when the overcurrent is generated and reduce the frequency generation of a reference clock signal applied to the DC-DC converter when the short circuit is generated, thereby reducing the amount of power outputted to a load.</p> |
