POWER SUPPLY WITH STANDBY POWER
First Claim
1. A power supply, comprising:
- a switching controller module, operable to generate a load switching signal and an auxiliary switching signal, wherein;
the load switching signal comprises pulses, each pulse of the load switching signal having a pulse width defining a charging duration, a first portion of the charging duration being defined as a function of an operational load power and a second portion of the charging duration being defined as a function of an operational auxiliary power; and
the auxiliary switching signal comprises pulses, each pulse of the auxiliary switching signal having a pulse width defined by the second portion of the charging duration;
a load power module, communicatively coupled with the switching controller module, and operable to generate output load power as a function of an input power signal and the load switching signal, such that the output load power is generated during the first portion of the charging duration; and
an auxiliary power module, communicatively coupled with the switching controller module, and operable to generate output auxiliary power as a function of the input power signal, the load switching signal, and the auxiliary switching signal, such that the output auxiliary power is generated during the second portion of the charging duration.
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Accused Products
Abstract
Methods, systems, and devices are described for auxiliary power with low standby power consumption. Switching power converters typically include a switching power element (e.g., a power transistor), driven by a switching controller (e.g., including a gate driver). The power output of the switching power converter may be a function of the switching signal provided by the switching controller. For example, a pulse-width modulated (“PWM”) signal may be used to drive the switching power element, and the output of the switching controller may be adjusted by adjusting the frequency and/or duty cycle of the PWM signal. Embodiments implement cycle extension techniques to effectively extend a portion of the PWM signal to generate additional charge. The additional charge may be used to power an auxiliary power unit. The auxiliary power unit may then be used to drive the switching controller and/or to provide a source of power for other internal or external components.
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Citations
26 Claims
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1. A power supply, comprising:
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a switching controller module, operable to generate a load switching signal and an auxiliary switching signal, wherein; the load switching signal comprises pulses, each pulse of the load switching signal having a pulse width defining a charging duration, a first portion of the charging duration being defined as a function of an operational load power and a second portion of the charging duration being defined as a function of an operational auxiliary power; and the auxiliary switching signal comprises pulses, each pulse of the auxiliary switching signal having a pulse width defined by the second portion of the charging duration; a load power module, communicatively coupled with the switching controller module, and operable to generate output load power as a function of an input power signal and the load switching signal, such that the output load power is generated during the first portion of the charging duration; and an auxiliary power module, communicatively coupled with the switching controller module, and operable to generate output auxiliary power as a function of the input power signal, the load switching signal, and the auxiliary switching signal, such that the output auxiliary power is generated during the second portion of the charging duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A power supply, comprising:
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means for generating a load switching signal comprising pulses, each pulse of the load switching signal having a pulse width defining a charging duration, a first portion of the charging duration being defined as a function of an operational load power and a second portion of the charging duration being defined as a function of an operational auxiliary power; means for generating an auxiliary switching signal comprising pulses, each pulse of the auxiliary switching signal having a pulse width defined by the second portion of the charging duration; means for generating output load power during the first portion of the charging duration as a function of an input power signal and the load switching signal; and means for generating output auxiliary power during the second portion of the charging duration as a function of the input power signal, the load switching signal, and the auxiliary switching signal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method for supplying power, comprising:
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generating a charging cycle for a power converter module, the charging cycle having a charging duration; charging a first power subsystem during a first portion of the charging duration using the power converter module; charging a second power subsystem during a second portion of the charging duration using the power converter module; outputting an output load power using the first power subsystem; and outputting an output auxiliary power using the second power subsystem. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification