Project Owners: Mena Azab Rayyan Mahmood
Requirements:
Can take 6S voltage
Can handle 50 A continuous
Create block diagram
Show the high-level process of how the motor controller works from receiving a battery voltage to controlling the phases of the motor
Create table for engineering decisions and tradeoffs for the following components:
MCU
We ordered an MCU that was to be used for the 4S ESC that was being designed, can potentially use this chip: https://www.digikey.ca/en/products/detail/stmicroelectronics/STM32L412KBT6/9656219
Gate driver IC
Does it have field-oriented control?
Does it have built in current sense? That would be extremely useful so that we don’t have to waste board space using a current sense amplifier and shunt
Power MOSFETs
Buck converter for MCU
Battery input connection type
PWM connection type
Programming pins connection type
Component Selection
Buck:
Part Number | Price | Comments |
---|---|---|
MAX5033DASA+ | Already in the bay | Buck IC |
RC0805FR-071ML | $0.15 | R1(1MΩ) - Upper resistor in voltage divider; by Vin |
RC0805FR-07383KL | $0.15 | R2(383KΩ) - Lower resistor in voltage divider; by Vin |
CL10B104KB8NNNC | $0.10 | CVD & CBST - 0.1µF x2 |
TYS8040151M-10 | $0.74 | L1 (150µF) - Inductor |
Cin(47µF) - | ||
Cout(47µF) - Ceramic | ||
D1 - No equations for diode given in datasheet and only this diode is shown throughout https://www.digikey.ca/en/products/detail/vishay-semiconductor-diodes-division/VS-50SQ100/143583 |
MCU:
Part Number | Price | Comments |
---|---|---|
STM32L412KBT6 | already order | same mcu as 4s esc with same passives |
Current Sense:
Part Number | Price | Comments |
---|---|---|
Gate Driver:
Part Number | Price | Comments |
---|---|---|
DRV8328BRUYR | already ordered | same gate driver as 4s esc |
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MOSFET:
Part Number | Price | Vds | Rds(on) | Continuous Current | Output Charge (nC) | Gate Charge (nC) | Rise time | Fall time | Comments |
---|---|---|---|---|---|---|---|---|---|
1.13 | 30V | 3.5mOhm @ 10V | 60A |
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2.2 | 30V | 8mOhm @ 10V | 55A | Wider package size |
Conduction Loss:
Gate Charge Loss:
Output Capacitance Loss:
Switching Transition Loss: