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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

    • 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

$0.16

R1(1MΩ) - Upper resistor in voltage divider; by Vin

RC0805FR-07130KL

$0.16

R2(130KΩ) - Lower resistor in voltage divider; by Vin

CL10B104KB8NNNC

$0.15

CVD & CBST - 0.1µF x2

TYS8040151M-10

$1

L1 (150µF) - Inductor

GRM21BR61H106KE43L

$0.44

Cin(10µF) x 8 (since it is around 1.3µF at 25.3 Volts due to DC Bias) - Ceramic Cap , 50V

TR3D476K016C0100

$2.14

Cout(47uf @ 100mOhm ESR) - Tantalum

B240A-FDITR-ND

$0.63

D1 - B240/A recommended by datasheet

RC0805FR-1324KL

$0.16

R3(24kΩ) - Upper resistor in feedback voltage divider

RC0805FR-0714KL

$0.16

R4(14kΩ) - Lower resistor in feedback voltage divider

MCU:

Part Number

Price

Comments

STM32L412KBT6

 Already orderd && in the bay

 same mcu as 4s esc with same passives

Current Sense:

Part Number

Price

Comments

INA180A1IDBVR

 Already orderd && in the bay

 same current sense IC as 4s esc

BVT-M-R001-1.0

$2.30

1mOhms, 6W shunt resistor

CL10B104KB8NNNC

$0.15

Bypass Cap and filter caps, 0.1uF x2

RC0603FR-0710KL

$0.16

Filter resistor, 10kOhms, 1/10W

 

Gate Driver:

Part Number

Price

Comments

 DRV8328BRUYR

 already ordered

 same gate driver as 4s esc

 

 

 

 

MOSFET:

Part Number

Price

Vds

Rds on (max)

Continuous Current

Output Charge (nC)

Gate Charge (nC)

Rise time

Fall time

Comments

 CSD17577Q5A

 1.08

 30V

 4.2mOhm @ 18A, 10V

60A

6

13

12ns

2ns

 MY SELECTION

TSM080N03EPQ56

 0.96

 30V

 8mOhm @ 16A, 10V

 55A

7.5

12.5ns

8.2ns

 Wider package size

GSFP03602

1.02

30V

7mOhm @ 30A, 10V

60A

23.5

30ns

6ns

Conduction Loss:

Gate Charge Loss:

Output Capacitance Loss:

Switching Transition Loss:

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