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TPS61170: Phantom power application circuit
Part Number: TPS61170 Hi sir, I am puzzled on 48v phantom power circuit. I found in this product's datasheet a schematic to boost up to 48V for phantom power. I'm a little confused though because it lists a maximum output voltage of 38V. I tried to create the schematic in webench but it again wouldn't let me use a voltage higher than 38. The schematic appears to have additional capacitors and diodes than a typical boost topology. Could you explain how those are used to achieve a voltage higher than the listed maximum output voltage? Also, do you have any other DC-DC converters you would recommend for phantom power applications? Thank you.
Dear Sir, Please check Figure 20. It use a charge pump circuit to achieve 48V output.
Thank u for your Response. do you have any other DC-DC converters you would recommend for phantom power applications?
Dear Sir, It depend on your output power. You can also choose TPS61175 with charge pump circuit. Or choose LM5001 if the output power is not big.