DocID026139 Rev 1

3/5

EVALSTPM33

Schematic diagrams

5

Figure 2. Metrology circuit schematic

C8

100n

R2

22K

Y1

16MHz

C10

10n

DL2

LED2

R6

4.7K

L7

1500ohm

C15

150p

R9

10K

L5

1500ohm

C11

150p

C24

22n

C20

4.7u

DL1

LED1

R5

4.7K

R26

470R

J8

N

1

J5

DIGITAL I/O

2

4

6

8

1

3

5

7

R8

10K

L4

1500ohm

C22

100n

L3

1500ohm

L1

1500ohm

RS1

BKW-M-R0003-5.0

R13

270K

R16

6R

T1

VAC 4626-X002

J11

Vref 1-2

J10

L2

1

R10

10K

L2

1500ohm

C16

15p

C25

10n

R24

270K

R3

100R

J4

Enable/RST

1

1

2

2

3

3

J6

SPI

J9

L1

1

T2

VAC 4626-X002

U3

STPM33/34

EN

8

INT2

7

INT1

6

LED2

5

LED1

4

CKin/XTAL1

3

XTAL2

2

CKout/ZCR

1

VCC

23

GNDreg

22

VDDA

21

GNDA

20

VREF1

17

GNDref

18

VREF2

19

NC

24

Ex

Ex

C19

100n

J7

DC Supply

C14

150p

L6

1500ohm

C17

15p

C33

10n

C13

150p

C23

100u 10V

R19

0R

R23

270K

R18

1K

C12

150p

R12

270K

R15

470R

R17

1K

R4

1M

R25

270K

R14

270K

R7

10K

R21

6R

R20

1K

C9

150p

C34

22n

R22

1K

Vcc

Vref2

Vref1

Ip2

In2

Vp1

Vp2

Vcc

Vref1

Vref2

In1

Ip1

Vcc

line2

RXD

TXD

Vcc

SCS

1 Int1

2 Int2

3 Led2

4 En/Rst

5 Led1

6 Gnd

7 Ckin

8 Ckout/ZCR

1 NC

2 MOSI

3 Gnd

4 MISO

5 SCS

6 SCL

7 NC

8 SYN

9 NC

10 Vcc

Do not assemble in case STPM33

RS1

BKW-M-R0003-5.0

BKW-M-R0003-5.0

RS1

To assemble in case current sensor is Shunt

To assemble in case current sensor is Current Transformer

GIPG25032014DI1535