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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. | |