DC-DC CONVERTER WITH ISOLATION
First Claim
Patent Images
1. A power converter comprising:
- a direct current (DC)-DC converter configured to receive an input voltage in a primary domain;
a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain; and
a transmission path configured to pass a digital feedback signal through an isolation barrier from the secondary domain to the primary domain.
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Abstract
A power converter comprises a direct current (DC)-DC converter configured to receive an input voltage in a primary domain, a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain, and a transmission path configured to pass a digital feedback signal through an isolation barrier from the secondary domain to the primary domain.
183 Citations
39 Claims
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1. A power converter comprising:
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a direct current (DC)-DC converter configured to receive an input voltage in a primary domain; a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain; and a transmission path configured to pass a digital feedback signal through an isolation barrier from the secondary domain to the primary domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A power controller comprising:
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a direct current (DC)-DC converter configured to receive an input voltage in a primary domain; a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain; and a dual-channel bidirectional isolator forming a transmission path that passes signals through an isolation barrier between the primary domain and the secondary domain comprising; a digital isolator and an analog isolator coupled in parallel between the primary domain and the secondary domain and configured to transmit data in opposing directions. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A power controller comprising:
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a power converter configured to receive an input voltage in a primary domain; a transformer coupled to and driven by the power converter and supplying an output voltage in a secondary domain; an isolated transmission path coupled between the primary domain and the secondary domain; a modulator configured to receive the output voltage that conditions the signal for transmission via the isolated transmission path; and a demodulator that receives the transmitted signal and recovers a feedback signal for usage in a control loop. - View Dependent Claims (26, 27, 28, 29)
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30. A method for controlling power in an electrical system comprising:
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receiving an input voltage in a primary domain; converting the input voltage from a first direct current (DC) level to a second DC level; passing the converted voltage to a load at a secondary domain; modulating the converted voltage into a feedback signal; transmitting the feedback signal from the secondary domain to the primary domain across an isolation barrier; demodulating the feedback signal in the primary domain; and controlling conversion of the input voltage from the first to the second DC level using the demodulated feedback signal. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification