DC-DC CONVERTER, POWER SUPPLY VOLTAGE SUPPLYING METHOD, AND POWER SUPPLY VOLTAGE SUPPLYING SYSTEM
First Claim
Patent Images
1. A DC-DC converter including a soft-start function of a soft start in response to a soft-start signal, comprising:
- a detection circuit that detects whether the soft-start signal is active at an end of a soft-start operation; and
an output voltage control circuit that controls an output voltage based on detection result of the detection circuit.
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Abstract
According to one aspect of the invention, a DC-DC converter including a soft-start function of a soft start in response to a soft-start signal, comprises: a detection circuit that detects whether the soft-start signal is active at an end of a soft-start operation; and an output voltage control circuit that controls an output voltage based on detection result of the detection circuit.
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Citations
20 Claims
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1. A DC-DC converter including a soft-start function of a soft start in response to a soft-start signal, comprising:
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a detection circuit that detects whether the soft-start signal is active at an end of a soft-start operation; and an output voltage control circuit that controls an output voltage based on detection result of the detection circuit. - View Dependent Claims (2, 3, 4)
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5. A DC-DC converter comprising:
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an input circuit that receives an external soft-start signal; a soft-start conversion circuit that converts the external soft-start signal into an internal soft-start signal; and a soft-start starting circuit that starts a soft-start operation in response to an activation of the internal soft-start signal, wherein the soft-start conversion circuit includes; a detection circuit that detects whether the soft-start signal is active at an end of a soft-start operation; and an output voltage control circuit that controls an output voltage based on a detection result of the detection circuit. - View Dependent Claims (6, 7, 8)
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9. A power supply voltage supplying method comprising:
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receiving a soft-start signal; starting a soft-start operation in response to an activation of the soft-start signal; detecting whether the soft-start signal is active at an end of the soft-start operation; and controlling an output voltage based on a detection result. - View Dependent Claims (10)
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11. A power supply voltage supplying system comprising:
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a CPU; and a DC-DC converter that performs a soft-start operation based on a soft-start signal supplied from the CPU, the DC-DC converter including; a detection circuit that detects whether the soft-start signal is active at an end of a soft-start operation; and an output voltage control circuit that controls an output voltage based on a detection result of the detection circuit. - View Dependent Claims (12)
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13. A DC-DC converter including a soft-start function in response to a soft-start signal, comprising:
a circuit that detects an output voltage in response to an activation of the soft-start signal and starts a soft-start operation when the output voltage falls within a prescribed range including a ground potential. - View Dependent Claims (14, 15)
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16. A DC-DC converter comprising:
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an input circuit that receives an external soft-start signal; a soft-start conversion circuit that converts the external soft-start signal into an internal soft-start signal; a soft-start starting circuit that starts a soft-start operation in response to activation of the internal soft-start signal; and a circuit that detects an output voltage in response to activation of the soft-start signal and starts a soft-start operation when the output voltage falls within a prescribed range including a ground potential. - View Dependent Claims (17)
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18. A power supply voltage supplying method for starting supply of a power supply voltage by starting a soft start based on a soft-start signal which is activated at a time of power-on or resetting, comprising:
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receiving the soft-start signal; detecting an output voltage in response to an activation of the soft-start signal; and starting a soft-start operation when the output voltage falls within a prescribed range including a ground potential.
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19. A power supply voltage supplying system comprising:
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a CPU; and a DC-DC converter that performs a soft-start operation based on a soft-start signal supplied from the CPU, the DC-DC converter including; a circuit that detects an output voltage in response to activation of the soft-start signal and that starts a soft-start operation when the output voltage falls within a prescribed range including a ground potential. - View Dependent Claims (20)
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Specification