Abstract: The semiconductor device includes first and second output terminals each coupled to one end side and another end side of an inductive or capacitive load, a first MOS transistor coupled between a first voltage and the first output terminal, a second MOS transistor coupled between a second voltage and the first output terminal, a third MOS transistor coupled between the first voltage and the second output terminal, a fourth MOS transistor coupled between the second voltage and the second output terminal, and a drive circuit driving the first to fourth MOS transistors for controlling the inductive or capacitive load, and further includes first and second bypass transistors for bypassing a forward current of a parasitic diode of a PN-junction formed in the MOS transistor in the dead-off period.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.

Abstract: The semiconductor device includes first and second output terminals each coupled to one end side and another end side of an inductive or capacitive load, a first MOS transistor coupled between a first voltage and the first output terminal, a second MOS transistor coupled between a second voltage and the first output terminal, a third MOS transistor coupled between the first voltage and the second output terminal, a fourth MOS transistor coupled between the second voltage and the second output terminal, and a drive circuit driving the first to fourth MOS transistors for controlling the inductive or capacitive load, and further includes first and second bypass transistors for bypassing a forward current of a parasitic diode of a PN-junction formed in the MOS transistor in the dead-off period.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.

Abstract: The frequency characteristic of a voltage-feedback class-D amplifier circuit for driving an output load is improved. A triangular-wave correction circuit which compensates a gradient of a triangular wave is provided to a triangular-wave signal generator which supplies a triangular wave signal used as a PWM carrier to a comparison circuit for performing PWM modulation of an input signal. In an area where a duty of a command value for an output circuit drive becomes about 50%, a slew rate (gradient) of the triangular wave is decreased.