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Answer by Spehro Pefhany for Feedback in hybrid power supply
1) The two Schottky diodes and capacitors form a charge pump that generates a negative voltage. With the 1K and 2N3904 they form a current sink that allows the output to go right to 0V with the 500K...
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Feedback in hybrid power supply
During my research of PSU I came across schematic from Linear's datasheet: 1) Whats the purpose of node which is going from output to SW pin of buck converter? 2) Is node which provides 6V headroom...
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