Patent ID: 7986133
Filing Date: 2011-07-26
Classification: H02M,Y10S

Abstract:
1. A semiconductor device for use in a DC-DC converter, comprising: a voltage input terminal; a voltage output terminal; a ground voltage terminal; a high side transistor of the DC-DC converter coupled to the voltage input terminal and the voltage output terminal; a low side transistor of the DC-DC converter coupled to the voltage output terminal and the high side transistor in series; a first driver circuit driving the high side transistor; a second driver circuit driving the low side transistor; a control circuit controlling the first driver circuit and the second driver circuit according to a pulse width modulation (PWM) signal; a pulse input terminal for inputting an input pulse signal; a pulse output terminal for outputting an output pulse signal; a pulse generating circuit coupled to the pulse input terminal and outputting a signal for generating the PWM signal; and a timer circuit coupled to the pulse input terminal and the pulse output terminal, the timer circuit outputting the output pulse signal to the pulse output terminal a predetermined time after the input pulse signal is input to the pulse input terminal.