| 摘要 |
A voltage converter includes a switching driver, a control part, a low band pass filter, and a pulse width modulation signal generating part. The switching driver includes: a pull-up transistor connecting an input voltage to a switching node in response to a pull-up gate signal; and a pull-down transistor connecting an earth voltage to the switching node in response to a pull-down gate signal. The control signal generates the pull-up and pull-down gate signals in response to the pulse width modulation signal, and controls a dead time to turn off the pull-up and pull-down transistors at the same time by measuring a pull-up turn-on time of the pull-up transistor and a pull-down turn-on time of the pull-down transistor in real time. The low band pass filter filters a switching voltage signal on the switching node to generate an output voltage. The pulse width modulation signal generating part generates the pulse width modulation signal based on the output voltage and a reference signal. |
