Part Number: UC3825
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In reply to Peter Meaney:
In reply to Colin Gillmor:
In reply to takahiko yokota:
You can parallel multiple power stages using the UC3825 - or indeed any controller operating in current mode control (but not Voltage mode control) by connecting their error amplifiers as voltage followers and then connecting their inputs to the output of an error amplifier. This could be an external error amplifier or an error amplifier in one of the power stages. I don't have a diagram of this arrangement specifically for hte UC3825 but the general idea is sketched out in the attached file.
Please let me know if you have any further questions - especially if it is not clear how this method applies to the UC3825. I'm sorry for the short reply but I'm travelling all week on business with little free time.
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