Spike control apparatus and methol for dc-dc convertet

A DC-DC converter control circuit, in which a main switch and a synchronous rectifying switch are alternately turned on so that a voltage of a DC electric power is transformed and outputted, said DC-DC converter control circuit comprises:

• a detection circuit for detecting a state that said main switch and said synchronous rectifying switch are simultaneously turned on.

A monitor circuit for a DC-DC converter control circuit, in which a main switch and a synchronous rectifying switch are alternately turned on so that a voltage of a DC electric power is transformed and outputted, said monitor circuit comprises:

• a detection circuit for detecting a state that said main switch and said synchronous rectifying switch are simultaneously turned on.

A method of monitoring a DC-DC converter having a main switch and a synchronous rectifying switch,

• wherein said main switch and said synchronous rectifying switch are alternately turned on so that a voltage of a DC electric power is transformed and outputted, and
• a state that said main switch and said synchronous rectifying switch are simultaneously turned on is detected.

A DC-DC converter having a first switch and an inductor which are connected in series, and a second switch disposed between a connecting point of said first switch with said inductor and a ground point, in which said first switch and said second switch are alternately turned on so that a voltage of a DC electric power is transformed and outputted, said DC-DC converter comprises:

• a detection circuit for detecting a state that said first switch and said second switch are simultaneously turned on.

A DC-DC converter control circuit, in which a first switch connected in series to an inductor and a second switch disposed between a connecting point of said first switch with said inductor and a ground point are alternately turned on so that a voltage of a DC electric power is transformed and outputted, said DC-DC converter control circuit comprises:

• a detection circuit for detecting a state that said first switch and said second switch are simultaneously turned on.

A monitor circuit for a DC-DC converter control circuit, in which a first switch connected in series to an inductor and a second switch disposed between a connecting point of said first switch with said inductor and a ground point are alternately turned on so that a voltage of a DC electric power is transformed and outputted, said monitor circuit comprises:

• a detection circuit for detecting a state that said first switch and said second switch are simultaneously turned on.

A method of monitoring a DC-DC converter having a first switch and an inductor which are connected in series, and a second switch disposed between a connecting point of said first switch with said inductor and a ground point,

• wherein said first switch and said second switch are alternately turned on so that a voltage of a DC electric power is transformed and outputted, and
• a state that said first switch and said second switch are simultaneously turned on is detected.