PROTOCOL FOR COMMUNICATION BETWEEN SECONDARY SIDE AND PRIMARY SIDE OF ISOLATED SWITCHING POWER CONVERTERS
First Claim
1. A power converter system, comprising:
- a switching power converter having a primary side and a secondary side that are electrically isolated from each other;
a first controller on the primary side of the switching power converter, the first controller controlling a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter;
a second controller on the secondary side of the switching power converter, the second controller encoding information into one or more pulses such that a first duration between consecutive ones of the pulses corresponds to a first logic level and a second duration between consecutive ones of the pulses corresponds to a second logic level, the second duration being greater than the first duration; and
a communication channel for transmitting the encoded information from the second controller to the first controller while maintaining electrical isolation between the primary side and the secondary side.
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Abstract
A power converter system comprises a switching power converter having a primary side and a secondary side that are electrically isolated from each other. A first controller on the primary side of the switching power converter controls a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter. A second controller on the secondary side of the switching power converter encodes information into one or more pulses such that a first duration between the consecutive pulses corresponds to a first logic level and a second duration between the consecutive pulses corresponds to a second logic level, the second duration being greater than the first duration.
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Citations
20 Claims
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1. A power converter system, comprising:
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a switching power converter having a primary side and a secondary side that are electrically isolated from each other; a first controller on the primary side of the switching power converter, the first controller controlling a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter; a second controller on the secondary side of the switching power converter, the second controller encoding information into one or more pulses such that a first duration between consecutive ones of the pulses corresponds to a first logic level and a second duration between consecutive ones of the pulses corresponds to a second logic level, the second duration being greater than the first duration; and a communication channel for transmitting the encoded information from the second controller to the first controller while maintaining electrical isolation between the primary side and the secondary side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for communicating information from a secondary side of a switching power converter in a power converter system to a primary side of the switching power converter, the power converter system comprising a first controller on the primary side of the switching power converter, a second controller on the secondary side of the switching power converter, and a communication channel maintaining electrical isolation between the primary side and the secondary side, the method comprising:
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controlling a switch in the switching power converter on or off at a switching frequency of the switching power converter by the first controller to regulate an output voltage of the isolated switching power converter; encoding information into one or more pulses by the second controller such that a first duration between consecutive ones of the pulses corresponds to a first logic level and a second duration between consecutive ones of the pulses corresponds to a second logic level, the second duration being greater than the first duration; and transmitting the encoded information from the second controller to the first controller via the communication channel while maintaining electrical isolation between the primary side and the secondary side. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification