1.0 KiB
1.0 KiB
@page powerDesign Power Design
Boost
LTSpice Simulations
- The LTSpice circuit includes input and output resistors for input and output power calculations
- An RC circuit can be added at the input for time-delay for output capacitor charging
- Output power = (16V)(2A(max))=32 Watts
- Input power = (12V)(Max FET current). Max FET current should be 2-3x the desired output current
- Rsense = Vsense(min)/IL(max). Vsense is given in LT1619 Datasheet: 40mV(min). For IL, we are using max FET current
- For Rsense, a smaller R value gives less output ripple voltage in simulation.
- Rsense is basically setting the current through the FET
- Voltage divider equation can be found in datasheet for LT1619
Altium
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Inductor is 10uH MSS1210-103MEB. Dr. Bazuin suggested its use as Sunseeker has lots of them
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Replaced the SI9804DY FET (used in LTSpice) with the FDS6680A as the SI is obsolete
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Replaced the MBR735 Schottky (used in LTSpice) with the MBRD835LT4G because 735 is not surface mount
Buck
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