Patent ID: 8552768

Claim:
A transistor switch control circuit, for controlling a high-side transistor and a low-side transistor connected in series, and the transistor switch control circuit comprising: a high-side driving circuit, generating a high-side control signal according to a duty cycle control signal to turn on the high-side transistor and generate a high-side conducting signal; and a low-side driving circuit, generating a low-side control signal according to the duty cycle control signal and the high-side conducting signal to turn on the low-side transistor, and the low-side driving circuit comprising: a delay circuit, generating a delay signal according to the duty cycle control signal, wherein a pulse width of the delay signal is greater than a pulse width of the duty cycle control signal for more than a predetermined time period; and a short through preventing circuit, generating the low-side control signal according to the delay signal and the high-side conducting signal, so that the low-side transistor is turned on after the high-side transistor is turned off, and is turned off before the high-side transistor is turned on.