DC/DC CONVERTER WITH MULTIPLE OUTPUTS
First Claim
1. A DC/DC converter comprising:
- a transformer having a primary winding coupled to a power source, a first secondary winding for providing a first output voltage and a second secondary winding for providing a second output voltage;
a first controller coupled to said primary winding for controlling input power to said primary winding to regulate said first output voltage; and
a first switch coupled to said second secondary winding and for regulating said second output voltage,wherein said first switch is controlled by a pulse modulation signal, wherein a current flows through said second secondary winding if said pulse modulation signal is in said first state, and wherein said current flowing through said second secondary winding remains cut-off if said pulse modulation signal is in said second state.
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Abstract
Embodiments of the invention provided a DC/DC converter. The DC/DC converter includes a transformer, a first controller and a first switch. The transformer has a primary winding coupled to a power source, a first secondary winding for providing a first output voltage and a second secondary winding for providing a second output voltage. The first controller is coupled to the primary winding for controlling input power to the primary winding to regulate the first output voltage. The switch is coupled to the second secondary winding and for regulating the second output voltage. The first switch is controlled by a pulse modulation signal. A current flows through the second secondary winding if the pulse modulation signal is in the first state, and the current flowing through the second secondary winding remains cut-off if the pulse modulation signal is in the second state.
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Citations
18 Claims
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1. A DC/DC converter comprising:
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a transformer having a primary winding coupled to a power source, a first secondary winding for providing a first output voltage and a second secondary winding for providing a second output voltage; a first controller coupled to said primary winding for controlling input power to said primary winding to regulate said first output voltage; and a first switch coupled to said second secondary winding and for regulating said second output voltage, wherein said first switch is controlled by a pulse modulation signal, wherein a current flows through said second secondary winding if said pulse modulation signal is in said first state, and wherein said current flowing through said second secondary winding remains cut-off if said pulse modulation signal is in said second state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a transformer having a primary winding coupled to a power source, a first secondary winding for providing a first output voltage to a first load and a second secondary winding for providing a second output voltage to a second load; and a driver controller coupled to said second secondary winding and for generating a pulse modulation signal to alternately enable and disable a current flowing through said secondary winding, wherein said current flows through said second secondary winding if said pulse modulation signal is in a first state, and wherein said current flowing through said second secondary winding remains cut-off if said pulse modulation signal is in a second state. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for controlling a transformer, comprising:
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generating a first output voltage at a first secondary winding of said transformer; generating a second output voltage at a second secondary winding of said transformer; controlling input power to said primary winding of said transformer to regulate said first output voltage; generating a pulse modulation signal; and alternately enabling and disabling a current flowing through said second secondary winding to regulate said second output voltage based on said pulse modulation signal, wherein said current flows through said second secondary winding if said pulse modulation signal is in a first state, and wherein said current flowing through said second secondary winding remains cut-off if said pulse modulation signal is in a second state. - View Dependent Claims (16, 17, 18)
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Specification