Dual input AC and DC power supply having a programmable DC output utilizing single-loop optical feedback
First Claim
1. A power converter, comprising:
- a first circuit converting an AC input voltage to a first predetermined DC output voltage;
a second circuit converting a DC input voltage to a second predetermined DC output voltage; and
a third circuit having a feedback circuit comprising a single feedback loop, said third circuit receiving said first and second predetermined output voltages and providing a selectable DC output voltage at a first output, wherein said single feedback loop is adapted to regulate both said first and second circuits to provide said selectable DC output voltage when said AC and DC input voltages are supplied to respective said first and second circuits.
2 Assignments
0 Petitions
Accused Products
Abstract
A dual input AC/DC power converter (10) having dual inputs (12,14) adapted to receive both an AC and DC input and provide a selectable DC voltage output (16) and a second DC output (18). The dual input AC/DC power converter (10) comprises a power converter circuit (20) having an AC-to-DC converter (22), a DC-to-DC booster converter (24), a feedback circuit (26), a filter circuit (25) and a DC-to-DC buck converter (28). Advantageously, the power converter (10) resolves many of the system management problems associated with carrying all of the different interface components necessary to power a wide variety of mobile products from either an AC or DC power supply. In addition, the feedback circuit (26) comprises single feedback loop having stacked photocouplers, one (PH1) controlling the AC-to-DC converter (22) and the other (PH3) controlling the DC-to-DC booster converter (24), to select the overall DC output voltage.
23 Citations
31 Claims
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1. A power converter, comprising:
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a first circuit converting an AC input voltage to a first predetermined DC output voltage;
a second circuit converting a DC input voltage to a second predetermined DC output voltage; and
a third circuit having a feedback circuit comprising a single feedback loop, said third circuit receiving said first and second predetermined output voltages and providing a selectable DC output voltage at a first output, wherein said single feedback loop is adapted to regulate both said first and second circuits to provide said selectable DC output voltage when said AC and DC input voltages are supplied to respective said first and second circuits. - 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)
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24. A power converter, comprising:
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a first circuit converting an AC input voltage to a first predetermined DC output voltage;
a second circuit converting a DC input voltage to a second predetermined DC output voltage;
a third circuit having a single optical feedback loop and receiving said first and second predetermined DC voltages and, in response thereto, providing a selectable DC output voltage at a first output, wherein said selectable DC output voltage is established as a function of a removable program module. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification