Adjustable current consumption power supply apparatus
First Claim
1. A power supply apparatus comprising:
- an input terminal;
an output terminal;
a charge pump DC/DC converter provided between the input terminal and the output terminal to convert an input voltage that is input in the input terminal into a given output voltage to be outputted toward the output terminal using charge and discharge of a capacitor; and
a series regulator connected in parallel with the charge pump DC/DC converter between the input terminal and the output terminal to continuously control the input voltage so that the input voltage becomes the given output voltage to be outputted toward the output terminal, wherein the charge pump DC/DC converter and the series regulator are selectively operated depending on an operation command signal which is pre-generated based on change of a predicted or scheduled load, whereby the output voltage on an operation side is taken out from the output terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small. Accordingly, the current consumption of its own can be lowered at the time of a light load, and the power conversion efficiency as a whole can be improved when it is used both at a heavy load and a light load.
-
Citations
12 Claims
-
1. A power supply apparatus comprising:
-
an input terminal;
an output terminal;
a charge pump DC/DC converter provided between the input terminal and the output terminal to convert an input voltage that is input in the input terminal into a given output voltage to be outputted toward the output terminal using charge and discharge of a capacitor; and
a series regulator connected in parallel with the charge pump DC/DC converter between the input terminal and the output terminal to continuously control the input voltage so that the input voltage becomes the given output voltage to be outputted toward the output terminal, wherein the charge pump DC/DC converter and the series regulator are selectively operated depending on an operation command signal which is pre-generated based on change of a predicted or scheduled load, whereby the output voltage on an operation side is taken out from the output terminal. - View Dependent Claims (2, 3)
-
-
4. A power supply apparatus comprising:
-
an input terminal;
an output terminal;
a switching regulator provided between the input terminal and the output terminal to switch and convert an input voltage that is input in the input terminal into a given output voltage to be outputted toward the output terminal; and
a series regulator connected in parallel with the switching regulator between the input terminal and the output terminal to continuously control the input voltage so that the input voltage becomes the given output voltage to be outputted toward the output terminal, wherein the switching regulator and the series regulator are selectively operated depending on an operation command signal which is pre-generated based on change of a predicted or scheduled load, whereby the output voltage on an operation side is taken out from the output terminal. - View Dependent Claims (5, 6)
-
-
7. A power supply apparatus comprising:
-
an input terminal an output terminal a charge pump DC/DC converter provided between the input terminal and the output terminal to convert an input voltage that is input in the input terminal into a given output voltage to be outputted toward the output terminal using charge and discharge of a capacitor; and
a series regulator connected in parallel with the charge pump DC/DC converter between the input terminal and the output terminal to continuously control the input voltage so that the input voltage becomes the predetermined output voltage to be outputted toward the output terminal, wherein the series regulator is operated at all times and the DC/DC converter is selectively operated depending on an operation command signal that is based on a size of a load. - View Dependent Claims (8, 9)
-
-
10. A power supply apparatus comprising:
-
an input terminal;
an output terminal;
a switching regulator provided between the input terminal and the output terminal to switch and convert an input voltage that is input in the input terminal into a given output voltage to be outputted toward the output terminal; and
a series regulator connected in parallel with the switching regulator between the input terminal and the output terminal to continuously control the input voltage so that the input voltage becomes the given output voltage to be outputted toward the output terminal, wherein the series regulator is operated at all times and the switching regulator is selectively operated depending on an operation command signal that is based on a size of a load. - View Dependent Claims (11, 12)
-
Specification