C5

A_GND

TP15

R24

10

PC3

11

A_GND

TP36

R16

100pF

R35

X1

+3.3V

TP13

R28

10

HRTIM_CHA1

ADC2_IN5

HRTIM_CHD2

22pF

PC7

38

U5

PC13

HRTIM_EEV7/SPI1_MISO

3

0

PWM_1

+3.3V

TP8

10

ADC2_IN11/OPAMP2_VINM

GND

5

HRTIM_CHE1

PWM_5

NRST

VOUT

3

VIN

C27

+5V

To pull-up when used for SMBus communication

Digital Power Connector pinout assignment for STM32F334R8T6 MCU

Jumper

+5V

I2C1_SCL/USART3_RX/CAN_RX

42

PA10

PWM_12

DAC1_OUT2/SPI1_SCLK

HRTIM_CHB1

PA1

4.7k

TP14

A_GND

PA8

41

44

PA12

ADC12_IN7

J6

1

TP28

R23

COMP4_OUT/TIM3_CH4

HRTIM_EEV1

TP25

COMP6_OUT/TIM3_CH1/TIM1_CH3N/HRTIM_EEV10

10K

48

GND

C23

100pF

GND

2

22pF

D2

TP11

+3.3V

GND

VDDA

34

PB14

100nF

R34

C15

PF0/OSC-IN

6

TP20

HRTIM_FLT5

C32

HRTIM_CHB1

OSC-IN

R17

FAULT_LED

COMP_1_INP/ADC_11

+

TP32

C11

C20

10

PWM_8

SMBus_SDA/UI_USART_TX

CAN_RX

ADC1_IN3

4.7k

2

100nF

PF1/OSC-OUT

7

15

STM32F334R8T6 (LQFP64)

PA2

2

TP16

R15

ADC12_IN6

NRST

A_GND

COMP6_INP

PB13

Red LED

R29

10

100nF

10

TP5

0

R37

C7

GND

TP2

R19

VDDA/VREF+

Green LED

ADC1_IN1

HRTIM_CHE2

COMP_2_INP/ADC_12/OP-AMP_1+

ADC_8

GND

GND

C22

PC8

R25

10

HRTIM_EEV2

ADC1_IN1

1

6

HRTIM_CHC2

OSC-OUT

SWCLK

PWM_4

TP33

3

Note: Keep ADC traces as short as

possible to connector P1

ANALOG INPUT FILTERS

VOLTAGE REGULATOR

GPIO_5/DAC_1/COMP_4_INP/SPI_NSS

10 HRTIM Outputs on STM32F334

C18

TP4

USART1_TX

PWM_11

+3.3V

GND

TP19

+3.3V

DA108S1

COMP2_INP/ADC2_IN4

VDDA

VDDA

10

100nF

GPIO_2/COMP_2_OUT/GP_PWM_2

VBAT

TP12

DA3

+3.3V

100uF

A_GND

VDDA

PC2

10

I2C1_SDA/USART3_TX/CAN_TX

GND

PWM_2

1

2

A_GND

2

ADC12_IN6

VSS_3

TP31

TP26

R26

10

VDDA

MCU_USART_TX

100pF

HRTIM_CHE2

TP10

HRTIM_CHA2

100pF

HRTIM_CHE1

100pF

R22

10

2

ADC_6/OP-AMP_1-

10

100pF

TP9

ADC1_IN3

PWM_7

DA108S1

A_GND

SMBus_SMBA/SPI_MOSI

HRTIM_CHC1

ADC12_IN8

100pF

J5

1

GND

16

GND CON

Stripline male 2x1 2.54mm

TP22

ADC12_IN7

Blue LED

100pF

LD1117

1

GND

EXT SUPPLY

I2C1_SCL/USART3_RX/CAN_RX

TP29

C29

PB12

33

GND

47

GND

100pF

TP1

TP23

100pF

TP3

R33

+3.3V

ADC_7/COMP_2_INM

ADC_9

100

+3.3V

R32

10

GND

TP35

J7

TP6

SWDIO

TP37

ADC_1/DIFF_ADC_1+

ADC_2/DIFF_ADC_1-/OP-AMP_2+

ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NM

C30

100pF

100nF

1.5 Ohm 215 mA

C31

J3

MCU_USART_RX

I2C1_SDA/USART3_TX/CAN_TX

USART1_RX

ADC1_IN2

TP27

U4

PWM_10

C10100nF

C28

7

GND

TP17

R36

DA2

8MHz HC49/US

ADC1_IN4

C26

A_GND

SWD - USER COMMUNICATION

COMP_3_INP

PC13

8

PC0

GND

1

PWM_3

C12

C25

C13

PC1

9

A_GND

I2C1_SDA/USART3_TX/CAN_TX

1

36

45

PA13

46

PC6

37

+3.3V

GPIO_6/DAC_2/SPI_SCLK

GPIO_7/DAC_3/OP-AMP_1_OUT

GPIO_8/EEV_2

GPIO_9/EEV_3/SPI_MISO

GPIO_10/DAC_4

HRTIM_CHA2

COMP2_OUT/HRTIM_FLT1

COMP2_OUT/HRTIM_FLT1

A_GND

39

PC9

40

SWDIO

DAC1_OUT1/SPI1_NSS

DAC2_OUT1

4

R18

ADC_10

HRTIM_CHD1

100pF

R27

100uF

R31

2

SWD/COM

R30

10

HRTIM_CHD2

PWM_6

TP24

DA1

I2C1_SMBA/SPI1_MOSI

HRTIM_CHA1

C24

HRTIM_CHB2

TP18

FAULT_LED

C14

+

+5V

PC14/OSC32_IN

4

C8

4th DAC channel not available

100nF

U3

ADC12_IN8

A_GND

GND

+3.3V

A_VDD

I2C1_SMBA

SMBus_SCL/UI_USART_RX

43

PA11

COMP4_INP/ADC1_IN11/OPAMP2_VINP

HRTIM_CHB2

GPIO_1/COMP_3_OUT/GP_PWM_1/EEV_4

A_GND

+5V

VDDA

STATUS_LED

D3

86

PA9

12

VSSA/VREF-

100nF

C9

HRTIM_CHD1

+3.3V

VDD_3

HRTIM_FLT5

HRTIM_CHC2

GND

D1

10

C6

TP21

C33

L1

PC15/OSC32_OUT

5

GND

J4

100nF

TP34

35

PB15

10

C21

ADC2_IN12

ADC1_IN2

HRTIM_CHC1

TP7

100pF

PC13

COMP6_OUT/TIM3_CH1/TIM1_CH3N/HRTIM_EEV10

+

GND

9

CAN_TX

NRST

PA0

14

DA108S1

ADC_5

PWM_9

8

13

GND

ADC_4/DIFF_ADC_2-/OP-AMP_2-

BAR43S

2

1

I2C1_SCL/USART3_RX/CAN_RX

FAULT_1

GPIO_3/COMP_1_OUT/FAULT_2

GPIO_4/EEV_1

VDDA

TP30

GND

25B

7A

7A

GPIO_6/DAC_2/SPI_SCLK

GPIO_8/EEV_2

GPIO_10/DAC_4

+5V

14B

15A

26A

27A

31A

21B

22A

18B

19A

9B

4A

4B

GND

20A

20B

27A

28A

Digital Power Connector

25A

25B

GND_iso

GPIO_1/COMP_3_OUT/GP_PWM_1/EEV_4

PWM_10

PWM_12

GPIO_3/COMP_1_OUT/FAULT_2

19A

19B

USART_TX_iso

28A

29A

CAN_TX

SMBus_SCL/UI_USART_RX

SMBus_SDA/UI_USART_TX

2B

15B

16A

ADC_7/COMP_2_INM

GND

7B

7B

P1

23B

24A

9B

10A

4A

23A

23B

17B

18A

+3.3V_iso

29A

30A

31B

32B

6A

6B

6B

22B

23A

GPIO_7/DAC_3/OP-AMP_1_OUT

GPIO_9/EEV_3/SPI_MISO

ADC_1/DIFF_ADC_1+

10A

10B

2A

2A

12A

12B

26B

3B

3B

24A

24B

18A

18B

30A

32A

17A

17B

+3.3V

USART_RX_iso

ADC_2/DIFF_ADC_1-/OP-AMP_2+

ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NM

15A

15B

A_GND

10B

11A

FAULT_1

PWM_1

2B

1A

1A

16A

16B

28B

30B

11A

11B

26B

29B

8A

8A

20B

21A

13A

13B

5B

6A

SMBus_SMBA/SPI_MOSI

24B

25A

32A

31B

14A

14B

3A

COMP_1_INP/ADC_11

COMP_3_INP

22A

22B

30B

26A

27B

28B

32B

31A

19B

20A

5B

11B

12A

A_VDD

8B

8B

12B

13A

1B

1B

ADC_4/DIFF_ADC_2-/OP-AMP_2-

ADC_5

ADC_6/OP-AMP_1-

COMP_2_INP/ADC_12/OP-AMP_1+

ADC_8

ADC_9

ADC_10

PWM_2

PWM_4

PWM_6

PWM_8

CAN_RX

PWM_3

PWM_5

PWM_7

PWM_9

13B

14A

3A

21A

21B

GPIO_4/EEV_1

GPIO_5/DAC_1/COMP_4_INP/SPI_NSS

29B

27B

4B

5A

5A

PWM_11

GPIO_2/COMP_2_OUT/GP_PWM_2

9A

9A

16B

17A

Note:

The microcontroller ground is referenced to the power converter secondary side.

On the microcontroller schematic, the ground symbol is denoted by GND and A_GND (Analog Signal Ground). Different symbols have been used

for better PCB layout. Both GND and A_GND are combined on the microcontroller at R37.