Semiconductor device and DC-DC converter
AssigneeKabushiki Kaisha Toshiba
InventorKenichi Wakasugi
Life of this patent
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Abstract
According to an embodiment, a semiconductor device includes: a first modulation circuit configured to generate a reference signal based on a first clock signal; a second modulation circuit configured to generate a feedback signal with a phase negative relative to a phase of the reference signal based on a second clock signal with a phase negative relative to a phase of the first clock signal; a comparator configured to compare the reference signal with the feedback signal to determine duty and generate a comparator signal; and a driver configured to output a drive signal.
Claims9
A semiconductor device comprising:
- a first modulation circuit configured to modulate reference voltage based on a first clock signal to generate a reference signal;
- a second modulation circuit configured to modulate a feedback voltage that is based on output voltage, based on a second clock signal with a phase negative relative to a phase of the first clock signal to generate a feedback signal with a phase negative relative to a phase of the reference signal;
- a comparator configured to compare the reference signal with the feedback signal to determine duty, and generate a comparator signal having the duty;
- and
- a driver configured to output a drive signal based on the comparator signal.
A DC-DC converter comprising a semiconductor device comprising:
- a first modulation circuit configured to modulate reference voltage based on a first clock signal to generate a reference signal;
- a second modulation circuit configured to modulate a feedback voltage that is based on output voltage, based on a second clock signal with a phase negative relative to a phase of the first clock signal to generate a feedback signal with a phase negative relative to a phase of the reference signal;
- a comparator configured to compare the reference signal with the feedback signal to determine duty, and generate a comparator signal having the duty;
- and
- a driver configured to output a drive signal based on the comparator signal, wherein
- an inductor is provided between the driver and an output terminal configured to output the output voltage;
- and
- a capacitor is provided between the output terminal and fixed potential.
Dependencies are inferred from the claim text.