System and method for implementing current sharing between packaged power supplies
First Claim
1. A method to implement current sharing between a plurality of packaged power converter modules arranged in parallel and connected to a common load, the method comprising:
- for each module, generating a current signal indicative of the current supplied by the module;
supplying the current signals from the plurality of modules to a common first conductor of a differential current share bus;
inverting the current signal from each module;
supplying the inverted current signals from the plurality of modules to a common second conductor of the differential current share bus;
supplying a signal from the differential current share bus to an internal controller of each module to adjust the output current of each module.
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Accused Products
Abstract
A system for implementing current sharing between packaged power converter modules is provided. The system includes a respective current monitoring circuit for generating a current signal indicative of the current supplied by each power converter module, and a respective inverter for inverting the current signals. The current signals and the inverted current signals from each module are provided to a differential current share bus. For each module, an error amplifier is provided to supply a remote sense terminal of the module with a control signal indicative of the difference between the current share bus reference level and a respective current signal.
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Citations
18 Claims
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1. A method to implement current sharing between a plurality of packaged power converter modules arranged in parallel and connected to a common load, the method comprising:
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for each module, generating a current signal indicative of the current supplied by the module; supplying the current signals from the plurality of modules to a common first conductor of a differential current share bus; inverting the current signal from each module; supplying the inverted current signals from the plurality of modules to a common second conductor of the differential current share bus; supplying a signal from the differential current share bus to an internal controller of each module to adjust the output current of each module. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of implementing current sharing between a plurality of packaged power converter modules arranged in parallel and connected to a common load, the method comprising:
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for each module, generating a current signal indicative of the current supplied by the module; supplying the current signals from each module to a first portion of a differential current share bus; inverting the current signals from each module; supplying the inverted current signals from each module to a second portion of the differential current share bus; generating a first signal representing the difference between the first and second portions of the differential current share bus; generating a plurality of control signals, each control signal representing the difference between the current signal of a respective module and the first signal; and outputting the control signals to a respective internal controller of each module to adjust the output current of the module. - View Dependent Claims (8)
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9. A system for implementing current sharing between a plurality of packaged power converter modules comprising:
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for each power converter module; a current monitoring circuit for generating a current signal indicative of the current supplied by the power converter module; and an inverter for inverting the current signal; and a differential current share bus common to each power converter module and having a non-inverted conductor for receiving the current signals from the current monitoring circuit of each power converter module and an inverted conductor for receiving the inverted current signals from the current monitoring circuit of each power converter module, wherein the differential current share bus is configured to be connected to an internal controller of each power converter module for adjusting the output current of the power converter module to an average level of the differential current share bus. - View Dependent Claims (10, 11, 12)
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13. A system for implementing current sharing between a plurality of packaged power converter modules comprising:
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a current monitoring circuit including a first differential amplifier for generating a current signal indicative of the current supplied by a power converter module; an inverter operatively connected to the output of the first differential amplifier for inverting the current signal; and a differential current share bus having a non-inverted portion for receiving the current signal and an inverted portion for receiving the inverted current signal, wherein the differential current share bus is configured to be connected to an internal controller of the power converter module for adjusting the output current of the power converter module to an average level of the differential current share bus. - View Dependent Claims (14, 15, 16)
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17. A system for implementing current sharing between a plurality of packaged power converter modules comprising:
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a current monitoring circuit for generating a current signal indicative of the current supplied by a power converter module; an inverter for inverting the current signal; a differential current share bus having a non-inverted portion for receiving the current signal and an inverted portion for receiving the inverted current signal; a first resistor arranged between the output of the current monitoring circuit and the first portion of the differential current share bus; and a second resistor arranged between the inverter and the second portion of the differential current share bus, wherein the differential current share bus is configured to be connected to an internal controller of the power converter module for adjusting the output current of the power converter module to an average level of the differential current share bus. - View Dependent Claims (18)
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Specification