Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1997-04-14
2000-06-13
Gaffin, Jeffrey
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307 38, 307 41, H02J 100
Patent
active
060752955
ABSTRACT:
The present invention provides two or more output voltages from one input voltage and one inductor. Each output voltage is formed by a switch controlling the charge delivered to each of the corresponding output capacitors. Preferably, a diode is placed in series with each switch that controls the charging of the output capacitors to prevent any extraneous stray current from escaping while the switch is closed. The controller utilizes pulse width modulation to deliver the correct amount of energy to each load and to synchronize the order of energy delivery to each load. The use of one input voltage and one inductor for charging multiple output voltages simplifies the complexity of the circuit of the present invention and eliminates the need for a single inductor dedicated to each load. Further, the predetermined output voltage level for each load can be changed without modifying the passive elements in the circuit. Rather, the predetermined voltage level for each load is changed by re-programming the controller thereby modifying the duration and frequency of the pulse received by the respective load from the charging inductor.
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Gaffin Jeffrey
Micro Linear Corporation
Zura Peter
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