| 摘要 |
It is desired to provide a DC-DC converter realizing proper slope compensation when an output voltage is dynamically changed with low power consumption, high efficiency and stable operation. Such DC-DC converter includes: a circuit converting an input voltage being switched in response to a drive signal to an output voltage; an amplifier generating an error signal based on an error between a target output voltage and the output voltage; a comparator generating a PWM signal based on the error signal, a current feedback signal corresponding to a current value between the input and output, and a slope compensation signal of a current value between the input and output; a circuit generating the drive signal based on the PWM signal and a period signal; a register recording a set voltage value corresponding to the target output voltage; and a circuit generating the slope compensation signal corresponding to the set voltage value.
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