Figure 3. STEVAL-PTOOL4A circuit schematic (3 of 6)

I SENSE U

+3V3A

R21

30k

R22

1k

SENP_U

C22

1nF

R23

220

ADC_I_U

C23

2n2

R24

1k

SENM_U

PLACE RC CLOSE TO THE MCU PIN

GND_SIGNAL

R27

30k

R28

30k

GND_SIGNAL

R29

30k

+3V3A

R32

30k

I SENSE V

R35

1k

SENP_V

R36

220

ADC_I_V

C26

1nF

C27

2n2

R37

1k

SENM_V

R38

30k

R39

30k

PLACE RC CLOSE TO THE MCU PIN

GND_SIGNAL

R40

30k

GND_SIGNAL

+3V3A

R41

30k

I SENSE W

R42

1k

SENP_W

C29

1nF

R43

220

ADC_I_W

C30

2n2

R44

1k

SENM_W

R45

30k

R46

30k

PLACE RC CLOSE TO THE MCU PIN

R47

30k

GND_SIGNAL

0.1% RESISTORS

GND_SIGNAL

+3V3A

C31

100nF

VBATT+

R85

27k

PLACE RC CLOSE TO MCU PINS

ADC_VDC

R88

3.9k

C55

10nF

D19

BAT54SWFILM

+3V3

GND_SIGNAL

VOLTAGE SENSE

+3V3

EP1

NTC1

10k

TEMP_FB

EP2

C58

100nF

R96

4.7k

GND_SIGNAL

THERMAL PROTECTION

+3V3A

C28

100nF

GND_SIGNAL

6-STEP SINGLE SHUNT

R25

1.5k

R26

100R

SENP_VB

C24

3.3nF

OP3_OUT_CPIN

R30

1.5k

R31

100R

SENM_VB

R33

6.8k

R34

6.8k

GND_SIGNAL

+3V3

R12

2k2

R14

2k2

R15

2k2

1

2

3

4

5

J5

HALL_SENSOR

R16

100R

R19

100R

R18

100R

R20

51R

C18

2n2

C19

2n2

C20

2n2

+5V

C21

100nF

GND_SIGNAL

GND_SIGNAL

D7

D8

D9

GND_SIGNAL

HALL SENSOR I/F

+3V3

R90

2.2k

1

2

3

4

5

J13

TRIG_X

R91

100R

R92

100R

C56

4.7nF

C57

100nF

D21

D22

GND_SIGNAL

THROTTLE, TRIGGER & DIRECTION

BEMF SENSING

R49

27k

OUT_U

OUT_V

R51

27k

R53

27k

OUT_W

PLACED CLOSE TO OUTPUT TERMINALS

R2

27k

R3

3.9k

C1

100nF

D1

BAT54SWFILM

+3V3

GND_SIGNAL

R4

27k

R5

3.9k

C3

100nF

D2

BAT54SWFILM

GND_SIGNAL

+3V3

R6

27k

R8

3.9k

C5

100nF

D3

BAT54SWFILM

GND_SIGNAL

+3V3

R10

220

C7

2n2

D4

BAT54SWFILM

+3V3

BEMF FEEDBACK

H1

H2

H3

ADC_V_W

ADC_THRTL

ADC_V_V

ADC_V_U

+3V3

1

2

J2

GND_SIGNAL

+5V

R94

75R

1

2

J14 (NM)

R95

75R

GND_SIGNAL

2

3

1

U3A

6

5

7

U3B

TSV912IQ2T

U3C

2

3

1

U2A

TSV912IQ2T

6

5

7

U2B

U2C

GND_SIGNAL

H1_X

H2_X

H3_X

DIR_X

THROTTLE_X

BEMF_U

BEMF_V

BEMF_W

BEMF_U

BEMF_V

BEMF_W

OP1_OUT

OP1_INM

OP1_INP

OP2_OUT

OP2_INP

OP2_INM

OP4_OUT

OP4_INP

OP4_INM

OP3_INP

OP3_INM

DIR