Electric household appliance and method for reducing stand-by state energy consumption using a switching mode low power supply unit
First Claim
1. A method for reducing standby-state energy consumption of an electric household appliance comprising an electronic control unit and a switching mode low power supply unit comprising a switching regulator unit having a first control terminal and at least an output terminal which supplies a main prefixed supply voltage to the electronic control unit;
- the switching mode low power supply unit being further configured to switch from a standby state to an operating state, when a prefixed voltage variation on the first control terminal is detected;
said method comprising;
supplying a low supply voltage different than zero to said first control terminal during at least said standby state; and
connecting, at least temporarily, said first control terminal to said output terminal, or to an independent auxiliary terminal having a predetermined voltage, to generate said prefixed voltage variation on the first control terminal so as to cause said switching regulator unit to switch from the standby state to the operating state.
1 Assignment
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Accused Products
Abstract
A household appliance (1) includes an electronic command device (3) configured to reduce standby-state energy consumption of the electric household appliance (1). The electronic command device (3) includes an electronic control unit (20) and a switching mode low power supply unit (6) with a switching regulator unit (13) having a first control terminal (11) and at least an output terminal (9) which supplies a main prefixed supply voltage (VB) to the electronic control unit (20). The switching mode low power supply unit (6) is further configured to switch from a standby state to an operating state, when a prefixed voltage variation (ΔV) on the first control terminal (11) is detected. The switching mode low power supply unit (6) includes auxiliary supply means (14) which supply a low supply voltage (V1) different than zero to the first control terminal (11) during at least the standby state.
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Citations
20 Claims
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1. A method for reducing standby-state energy consumption of an electric household appliance comprising an electronic control unit and a switching mode low power supply unit comprising a switching regulator unit having a first control terminal and at least an output terminal which supplies a main prefixed supply voltage to the electronic control unit;
- the switching mode low power supply unit being further configured to switch from a standby state to an operating state, when a prefixed voltage variation on the first control terminal is detected;
said method comprising; supplying a low supply voltage different than zero to said first control terminal during at least said standby state; and connecting, at least temporarily, said first control terminal to said output terminal, or to an independent auxiliary terminal having a predetermined voltage, to generate said prefixed voltage variation on the first control terminal so as to cause said switching regulator unit to switch from the standby state to the operating state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- the switching mode low power supply unit being further configured to switch from a standby state to an operating state, when a prefixed voltage variation on the first control terminal is detected;
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9. A household appliance comprising:
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an electronic command device configured to reduce standby-state energy consumption of the household appliance, the electronic command device comprising; an electronic control unit; and a switching mode low power supply unit comprising; a switching regulator unit having a first control terminal and at least an output terminal which supplies a main prefixed supply voltage to the electronic control unit, the switching mode low power supply unit being further configured to switch from a standby state to an operating state, when it detects a prefixed voltage variation on the first control terminal; wherein said switching mode low power supply unit comprises an auxiliary supply which supplies a low supply voltage different than zero to said first control terminal during at least said standby state, and wherein said electronic command device is configured to connect, at least temporarily, said first control terminal to said output terminal, or to an independent auxiliary terminal having a predetermined voltage, to generate said prefixed voltage variation on the first control terminal so as to cause said switching regulator unit to switch from the standby state to the operating state. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification