Power supply circuit
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorChen kong Teh
Life of this patent
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Abstract
A power supply circuit in an embodiment includes a first transistor that supplies an output based on an input power supply voltage to a load or stops the supply of the output to the load, a second transistor, one end of a current path of which is connected to the gate of the first transistor and another end of the current path of which is connected to a reference potential point, the second transistor being turned on and off according to a level of a gate voltage of the second transistor, a capacitor connected between an input end of the power supply voltage and a gate of the second transistor, and a voltage holding circuit connected between the gate of the second transistor and the reference potential point and configured to hold the gate voltage of the second transistor.
Claims6
A power supply circuit comprising:
- a first transistor controlled to be turned on and off according to a control signal supplied to a gate, the first transistor including one end to which a power supply voltage is applied, and another end connected to a load, and being configured to supply an output based on the power supply voltage to the load or stop the supply of the output to the load;
- an N-type second transistor, a drain of the second transistor being connected to the gate of the first transistor, a source of the second transistor being connected to a reference potential point, the second transistor being turned on and off according to a level of a gate voltage of the second transistor;
- a capacitor connected between the one end of the first transistor to which the power supply voltage is applied and a gate of the second transistor;
- and
- a voltage holding circuit connected between the gate of the second transistor and the reference potential point and configured to hold the gate voltage of the second transistor.
Dependencies are inferred from the claim text.