Transformerless multiple output capable power supply system
First Claim
1. An apparatus, comprising:
- a ladder well coupled to a source of electrical power and providing a variable input power signal having a controllable power parameter, the ladder well including a plurality of energy cells, each of the energy cells including;
a ladder storage element, wherein the ladder storage element is a zener diode;
a pair of input switching devices coupled to the ladder storage element and being configured to receive a control signal and the variable input power signal from the ladder storage element and to responsively produce an alternating current power signal, the pair of input switching devices including a first input switching device driving a high side of the input power signal and a second input switching device driving a low side of the input power signal the frequency of the alternating current power signal being responsive to the control signal;
a frequency dependent reactive device including a capacitor (e.g., the flying capacitors electrically coupled to the pair of input switching devices for receiving the alternating current power signals; and
a pair of output switching devices coupled to the capacitor for producing an output power signal having a voltage lever.
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Accused Products
Abstract
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.
46 Citations
26 Claims
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1. An apparatus, comprising:
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a ladder well coupled to a source of electrical power and providing a variable input power signal having a controllable power parameter, the ladder well including a plurality of energy cells, each of the energy cells including; a ladder storage element, wherein the ladder storage element is a zener diode; a pair of input switching devices coupled to the ladder storage element and being configured to receive a control signal and the variable input power signal from the ladder storage element and to responsively produce an alternating current power signal, the pair of input switching devices including a first input switching device driving a high side of the input power signal and a second input switching device driving a low side of the input power signal the frequency of the alternating current power signal being responsive to the control signal; a frequency dependent reactive device including a capacitor (e.g., the flying capacitors electrically coupled to the pair of input switching devices for receiving the alternating current power signals; and a pair of output switching devices coupled to the capacitor for producing an output power signal having a voltage lever. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification