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Texas Instruments DAC8775EVM User Manual Download Page 16

VSENSEP_A

CCOMP_A

VOUT_A

IOUT_A

VSENSEN_A

HART_IN_A

VSENSEP_B

CCOMP_B

VOUT_B

IOUT_B

VSENSEN_B

HART_IN_B

VSENSEP_C

CCOMP_C

VOUT_C

IOUT_C

VSENSEN_C

HART_IN_C

VSENSEP_D

CCOMP_D

VOUT_D

IOUT_D

VSENSEN_D

HART_IN_D

1

2

JP16

15

R11

C48

DNI

15

R13

15

R15

1

2

JP26

4

1
2
3

J5

ED555/4DS

VPOS_A

75V

1

3

2

D17

BAV99-7-F

0.1µF

C54

1

2

JP18

1

2

JP19

1

2

JP20

1

2

JP17

15

R12

C49

DNI

15

R14

15

R16

1

2

JP27

4

1
2
3

J6

ED555/4DS

VPOS_B

75V

1

3

2

D18

BAV99-7-F

0.1µF

C55

VNEG_A

VNEG_B

1

2

JP30

15

R25

C58

DNI

15

R27

15

R29

1

2

JP40

4

1
2
3

J7

ED555/4DS

VPOS_C

75V

1

3

2

D21

BAV99-7-F

0.1µF

C64

VNEG_C

1

2

JP31

15

R26

C59

DNI

15

R28

15

R30

1

2

JP41

4

1
2
3

J8

ED555/4DS

VPOS_D

75V

1

3

2

D22

BAV99-7-F

0.1µF

C65

VNEG_D

DNC

1

VIN

2

TEMP

3

GND

4

TRIM/NR

5

VOUT

6

NC

7

DNC

8

U2

REF5050IDGK

1

2

J9

VREFSUPPLY

10uF

C68

0.1µF

C70

1.50

R39

47µF

C72

EXT_VREF

OUT_A

OUT_B

OUT_C

OUT_D

1µF

C69

1µF

C60

1µF

C61

1µF

C52

1µF

C53

1µF

C62

1µF

C63

1µF

C71

1µF

C51

1µF

C50

1

2

JP21

0.022µF

C56

0.022µF

C66

0.022µF

C57

0.022µF

C67

1

2

JP22

1

2

JP23

1

2

JP24

1

2

JP25

1

2

JP36

1

2

JP37

1

2

JP38

1

2

JP39

1

2

JP32

1

2

JP33

1

2

JP34

1

2

JP35

600 ohm

FB9

600 ohm

FB10

600 ohm

FB11

600 ohm

FB12

300

R17

300

R18

300

R32

300

R31

324

R23

324

R34

324

R37

324

R20

249

R19

249

R22

249

R33

249

R36

1.00k

R21

1.00k

R24

1.00k

R35

1.00k

R38

36V

D19

36V

D20

36V

D23

36V

D24

1

2

JP28

1

2

JP42

1

2

JP43

1

2

JP29

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

Copyright © 2016, Texas Instruments Incorporated

PVDD/AVDD

100µH

L1

A

G

ND

_

A

P

V

S

S

_

A

P

V

DD_

A

V

P

O

S

_

IN_

A

L

N_

A

L

P

_

A

V

NE

G

_

IN

_

A

V

NE

G

_

IN

_

A

2k ohm

FB1

2k ohm

FB2

0.1µF

C5

1

2

3

JP1

1

2

3

JP2

PVDD/AVDD

AVSS

VPOS_A

VNEG_A

0.1µF

C6

V

P

O

S

_

IN_

B

L

N_

B

L

P

_

B

V

NE

G

_

IN

_

B

V

NE

G

_

IN

_

B

A

G

ND

_

B

P

V

S

S

_

B

P

V

DD_

B

A

G

ND_

C

P

V

S

S

_

C

P

V

D

D_

C

V

P

O

S

_

IN_

C

L

N

_

C

L

P

_

C

V

NE

G

_

IN

_

C

V

NE

G

_

IN

_

C

V

P

O

S

_

IN_

D

L

N

_

D

L

P

_

D

V

NE

G

_

IN

_

D

V

NE

G

_

IN

_

D

A

G

ND_

D

P

V

S

S

_

D

P

V

D

D_

D

PVDD/AVDD

100µH

L2

2k ohm

FB3

2k ohm

FB4

0.1µF

C7

1

2

3

JP3

1

2

3

JP4

PVDD/AVDD

AVSS

VPOS_B

VNEG_B

0.1µF

C8

PVDD/AVDD

100µH

L3

2k ohm

FB5

2k ohm

FB6

0.1µF

C25

1

2

3

JP5

1

2

3

JP6

PVDD/AVDD

AVSS

VPOS_C

VNEG_C

0.1µF

C26

PVDD/AVDD

100µH

L4

2k ohm

FB7

2k ohm

FB8

0.1µF

C27

1

2

3

JP7

1

2

3

JP8

PVDD/AVDD

AVSS

VPOS_D

VNEG_D

0.1µF

C28

VPOS_A

VNEG_A

VPOS_B

VNEG_B

VPOS_D

VNEG_D

VPOS_C

VNEG_C

10µF

C3

10µF

C4

10µF

C16

10µF

C23

10µF

C24

10µF

C36

10µF

C35

10µF

C15

10µF

C1

10µF

C2

10µF

C21

10µF

C22

1µF

C9

1µF

C10

1µF

C17

1µF

C18

1µF

C13

1µF

C19

1µF

C11

1µF

C12

1µF

C14

1µF

C20

1µF

C37

1µF

C38

1µF

C33

1µF

C30

1µF

C29

1µF

C39

1µF

C31

1µF

C32

1µF

C34

1µF

C40

10.0

R1

10.0

R2

10.0

R3

10.0

R4

10.0

R5

10.0

R6

10.0

R7

10.0

R8

D1

D3

D2

D4

D9

D11

D10

D12

36V

D5

36V

D6

36V

D7

36V

D8

36V

D13

36V

D14

36V

D15

36V

D16

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

Copyright © 2016, Texas Instruments Incorporated

EVM Documentation

www.ti.com

16

SBAU248 – November 2016

Submit Documentation Feedback

Copyright © 2016, Texas Instruments Incorporated

DAC8775EVM User’s Guide

Figure 13. DC-DC Schematic

Figure 14. Outputs Schematic

Summary of Contents for DAC8775EVM

Page 1: ...EVM Software Setup 10 4 EVM Software Overview 12 5 EVM Documentation 15 List of Figures 1 DAC8775EVM Hardware Setup 3 2 DAC8775EVM Block Diagram 3 3 PVDD AVDD AVSS and DVDD Supply Connections 6 4 Digi...

Page 2: ...he contents of the EVM kit Contact the nearest Texas Instruments Product Information Center or visit the Texas Instruments E2E Community http E2E ti com if any component is missing Table 1 Contents of...

Page 3: ...tes with the SM USB DIG platform which provides the power and digital signals used to communicate with the EVM board Connectors on the EVM board allow the user to connect the required external power s...

Page 4: ...s PVDD AVDD to supply VPOSD JP8 1 2 1 2 Selects DC DC Channel D to supply VNEGD 2 3 Selects AVSS to supply VNEGD JP9 Not installed Installed Connects the SM USB DIG supply to DVDD Not installed Discon...

Page 5: ...SEPC is shorted to VOUTA off board JP31 Installed Installed VSENSEPD is shorted to VOUTB onboard Not installed VSENSEPD is shorted to VOUTB off board JP32 Not installed Installed Loads VOUTC IOUTC wit...

Page 6: ...negative supply for the output signal chain may be powered by the DAC8775 internal buck boost converters or by off board supply voltages WARNING Permanent device damage may occur if externally supplyi...

Page 7: ...onfiguration take care to ensure that digital logic thresholds of the host and DAC8775 match and that the absolute maximum ratings of the DAC8775 are not violated 2 5 EVM Features This section describ...

Page 8: ...NSEP_X and VSENSEN_X sense connections may be provided onboard or externally closer to the point of load through terminal blocks J5 J6 J7 or J8 To provide the VSENSEP_X connections onboard install JP1...

Page 9: ...HART FSK communication signals onto the current outputs When injecting the HART signal remove JP28 JP29 JP42 or JP43 and apply the HART signal to pin 1 When a HART signal is not being injected install...

Page 10: ...VDUT Switchable DUT power supply 3 3 V 5 V Hi Z disconnected Note When VDUT is Hi Z all digital I Os are Hi Z as well 7 SPI_CLK SPI clock signal SCLK 8 GND Power return GND 9 SPI_CS1 SPI chip select s...

Page 11: ...e installation process initializes the user is given a choice of selecting the installation directory usually defaulting to C Program Files x86 DAC8775EVM and C Program Files x86 National Instruments...

Page 12: ...EVM If this error happens first ensure that the USB cable is properly connected on both ends This error can also occur if the USB cable is connected before the SM USB DIG platform power source Another...

Page 13: ...of the device to synchronize the GUI and hardware A hardware clear command can be issued through JP12 If a hardware clear is issued the READ ALL button should be pressed to synchronize the GUI and ha...

Page 14: ...asheet 4 6 Slew Rate Controls The slew rate of each channel may be controlled by the slew control registers for each channel By default the slew rate control features are disabled To enable the slew r...

Page 15: ...11 LP_B 12 PVDD_B 13 LN_A 14 PVSS_A 15 LP_A 16 PVDD_A 17 AGND_A 18 VNEG_IN_A 19 VNEG_IN_B 20 SCLK 21 SDIN 22 LDAC 23 SDO 24 SYNC 25 CLR 26 HARTIN_B 27 CCOMP_B 28 HARTIN_A 29 CCOMP_A 30 VSENSEP_B 31 V...

Page 16: ...ND GND GND GND GND GND GND GND GND GND GND GND GND Copyright 2016 Texas Instruments Incorporated PVDD AVDD 100 H L1 AGND_A PVSS_A PVDD_A VPOS_IN_A LN_A LP_A VNEG_IN_A VNEG_IN_A 2k ohm FB1 2k ohm FB2 0...

Page 17: ...ber 2016 Submit Documentation Feedback Copyright 2016 Texas Instruments Incorporated DAC8775EVM User s Guide 5 2 EVM PCB Components Layout Figure 15 shows the layout of the components for the EVM boar...

Page 18: ...A SOD 123 MBRX160 TP Micro Commercial Components 12 D5 D6 D7 D8 D13 D14 D15 D16 D19 D20 D23 D24 Diode TVS Bi 36V 400W SOD323 2 Leads Body 1 9x1 45mm No Polarity Mark CDSOD323 T36SC Bourns 4 D17 D18 D2...

Page 19: ...1 00 k 0 1 1 W 1206 resistor PHP01206E1001BST5 Vishay Dale 1 R39 RES 1 50 ohm 1 0 1W 0603 CRCW06031R50FKEA Vishay Dale 16 TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP17 TP18 TP19 TP20 TP31 TP32 TP33 TP34 Test...

Page 20: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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