Project Owners: Mostafa Hussein Rayyan Mahmood
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LMR54406 | TPS54302 | TPS563300 | TPS62933TPS62932 | MAX5033 | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vin Range (V) | 4 - 36 | 4.5 - 28 | 3.8 - 28 | 3.8 - 30 | 7.5 - 76 | |||||
Vout Range (V) | 1 - 28 | 0.6 -26 | 0.8 - 22 | 0.8 - 22 | 1.25 - 13.2 | |||||
Iout Max (A) | 0.6 | 3 | 3 | 3 | 0.5Iq - Quiescent Current (typ.) (mA) | 0.08 | 0.04 | 0.02 | 0.012 | 0.270 |
Switching Freq. (kHz) | 935 - 1264 | 400 | 500 | 200 - 2200 | 125 | |||||
Electrolytic/Tantalum Caps needed? (Y/N) | Ceramic | Ceramic | Ceramic | Ceramic | Tantalum | Number of pins (No.) | 6 | 6 | 8 | 8 |
8Package Size | 8.12 mm² | 8.12 mm² | 3.36 mm² | 3.36 mm² | - | |||||
Price | $1.55 | $2.42 | $1.03 | $1.1509 | In the bay ($6.40) |
Note 1: All these chips have adjustable outputs using a feedback pin connected to a voltage divider.
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LMR54406 | TPS54302 | TPS563300 | TPS62933TPS62932 | MAX5033 | Max | ||||||
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Vin Range (V) | 5 | 5 | 5 | 5 | 5 | 5 | |||||
Vout Range (V) | 5 | 5 | 5 | 5 | 5 | 5 | |||||
Iout Max (A)5 | 5 | 5 | 5 | 5 | 5Iq - Quiescent Current (typ.) (mA) | 2 | 2 | 3 | 4 | 1 | 5 |
Switching Freq. (kHz) | 4 | 2 | 2 | 5 | 1 | 5 | |||||
Electrolytic/Tantalum Caps needed? (Y/N) | 5 | 5 | 5 | 5 | 1 | 5Number of pins (No.) | |||||
Package Size | 3 | 3 | 5 | 5 | 4 | 4 | 43 | 5 | |||
Price | 3 | 2 | 5 | 45 | 5 | 5 | |||||
Totals | 3430 | 3127 | 3432 | 3730 | 3525 | 4030 |
Summary of Decision Matrix:
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Given the current issues with the MAX5033 and evaluating it against other (similar) buck converter chips, it is evident that despite the advantage of already having the MAX5033, other bucks convert chips can satisfy the proposed requirements for the 6S ESC project while minimizing the buck converter circuit’s footprint on the PCB. Moreover, Given given the results from the Decision Matrix, the recommendation for the new buck chip is the TPS62933 TPS62932.
MCU:
Part Number | Price | Comments |
---|---|---|
STM32L412KBT6 | Already orderd && in the bay | same mcu as 4s esc with same passives |
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Part Number | Price | Vds | Rds on (max) | Continuous Current | Output Charge (nC) | Gate Charge (nC) | Rise time | Fall time | Comments |
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1.08 | 30V | 4.2mOhm @ 18A, 10V | 60A | 6 | 13 | 12ns | 2ns | MY SELECTION | |
0.96 | 30V | 8mOhm @ 16A, 10V | 55A | 7.5 | 12.5ns | 8.2ns | Wider package size | ||
1.02 | 30V | 7mOhm @ 30A, 10V | 60A | 23.5 | 30ns | 6ns | |||
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