Recommended Decoupling Capacitor Quantities for Artix UltraScale+, Kintex UltraScale+, and Virtex UltraScale+ XC Devices

UltraScale Architecture PCB Design User Guide (UG583)

Document ID
UG583
Release Date
2023-11-14
Revision
1.27 English

Table: Decoupling Capacitor Recommendations for Artix UltraScale+ XC Devices to Table: Decoupling Capacitor Recommendations for Virtex UltraScale+ Device HBM Rails show the recommended decoupling capacitor quantities for Artix UltraScale+, Kintex UltraScale+, and Virtex UltraScale+ XC devices.

Table A-3:      Decoupling Capacitor Recommendations for Artix UltraScale+ XC Devices

 

VCCINT/VCCINT_IO(1)

VCCBRAM/VCCINT_IO(2)

VCCAUX/VCCAUX_IO(3)

HDIO/HPIO(4)

(per bank)

330 µF

100 µF

47 µF

10 µF

1.0 µF

47 µF

10 µF

47 µF

10 µF

1.0 µF

47 µF

10 µF

1.0 µF

XCAU7P-FCVA289

1

1

1

2

2

1

1

1

1

1

1

1

1

XCAU7P-UBVA292

1

1

1

2

2

1

1

1

1

1

1

1

1

XCAU7P-SBVC484

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU10P-UBVA368

1

1

1

3

3

1

1

1

2

2

1

1

1

XCAU10P-SBVB484

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU10P-FFVB676

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU15P-UBVA368

1

1

2

5

5

1

1

1

2

2

1

1

1

XCAU15P-SBVB484

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU15P-FFVB676

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU20P-FFVB676

1

1

1

1

0

1

1

1

1

0

1

1

0

XCAU20P-SFVB784

1

1

2

4

0

1

1

1

1

0

1

1

0

XCAU25P-FFVB676

1

1

1

2

0

1

1

1

2

0

1

1

0

XCAU25P-SFVB784

1

1

1

2

0

1

1

1

2

0

1

1

0

Notes:

1.Connect VCCINT and VCCINT_IO together on the PCB for -3, -2, and -1 speed grades. The capacitors listed are the total number of capacitors for the combined rail.

2.Connect VCCBRAM and VCCINT_IO together on the PCB for -2L and -1L speed grades. The capacitors listed are the total number of capacitors for the combined rail.

3.VCCAUX and VCCAUX_IO must share the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

4.The 47 µF capacitor can be combined at one per every four shared HDIO/HPIO banks.

Table A-4:      Decoupling Capacitor Recommendations for Kintex UltraScale+ XC Devices

 

VCCINT/VCCINT_IO(1)

VCCBRAM/VCCINT_IO(2)

VCCAUX/VCCAUX_IO(3)

HDIO/HPIO(4) (per bank)

330 µF

100 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

XCKU3P-SFVB784

1

4

1

1

1

1

1

1

1

1

XCKU3P-FFVA676

1

4

1

1

1

1

1

1

1

1

XCKU3P-FFVB676

1

4

1

1

1

1

1

1

1

1

XCKU3P-FFVD900

1

4

1

1

1

1

1

1

1

1

XCKU5P-SFVB784

1

5

1

1

1

1

1

1

1

1

XCKU5P-FFVA676

1

5

1

1

1

1

1

1

1

1

XCKU5P-FFVB676

1

5

1

1

1

1

1

1

1

1

XCKU5P-FFVD900

1

5

1

1

1

1

1

1

1

1

XCKU9P-FFVE900

1

5

1

1

1

1

1

1

1

1

XCKU11P-FFVD900

1

5

1

1

1

1

1

1

1

1

XCKU11P-FFVA1156

1

5

1

1

1

1

1

1

1

1

XCKU11P-FFVE1517

1

5

1

1

1

1

1

1

1

1

XCKU13P-FFVE900

1

5

1

1

1

1

1

1

1

1

XCKU15P-FFVA1156

1

5

1

1

1

1

1

1

1

1

XCKU15P-FFVE1517

1

5

1

1

1

1

1

1

1

1

XCKU15P-FFVA1760

1

5

1

1

1

1

1

1

1

1

XCKU15P-FFVE1760

1

5

1

1

1

1

1

1

1

1

XCKU19P-FFVJ1760

1

5

1

1

1

1

2

2

1

1

XCKU19P-FFVB2104

1

5

1

1

1

1

2

2

1

1

Notes:

1.Connect VCCINT and VCCINT_IO together on the PCB for -3, -2, and -1 speed grades. The capacitors listed are the total number of capacitors for the combined rail.

2.Connect VCCBRAM and VCCINT_IO together on the PCB for -2L and -1L speed grades. The capacitors listed are the total number of capacitors for the combined rail.

3.VCCAUX and VCCAUX_IO must share the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

4.The 47 µF capacitor can be combined at one per every four shared HDIO/HPIO banks.

Table A-5:      Decoupling Capacitor Recommendations for Virtex UltraScale+ XC Devices

 

VCCINT/VCCINT_IO(1)

VCCBRAM/VCCINT_IO(2)

VCCAUX/VCCAUX_IO(3)

HPIO/HDIO(4) 
(per bank)

330 µF

100 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

XCVU3P-FFVC1517

1

5

1

1

1

1

1

1

1

1

XCVU5P-FLVA2104

2

6

1

1

1

1

2

2

1

1

XCVU5P-FLVB2104

2

6

1

1

1

1

2

2

1

1

XCVU5P-FLVC2104

2

6

1

1

1

1

2

2

1

1

XCVU7P-FLVA2104

2

7

2

2

1

1

2

2

1

1

XCVU7P-FLVB2104

2

7

2

2

1

1

2

2

1

1

XCVU7P-FLVC2104

2

7

2

2

1

1

2

2

1

1

XCVU9P-FLGA2104

3

8

3

4

1

2

2

2

1

1

XCVU9P-FLGB2104

3

8

3

4

1

2

2

2

1

1

XCVU9P-FLGC2104

3

8

3

4

1

2

2

2

1

1

XCVU9P-FSGD2104

3

8

3

4

1

2

2

2

1

1

XCVU9P-FLGA2577

3

8

3

4

1

2

2

2

1

1

XCVU11P-FLGF1924

4

9

4

8

1

2

1

2

1

1

XCVU11P-FLGB2104

4

9

4

8

1

2

1

2

1

1

XCVU11P-FLGC2104

XQVU11P-FLRC2104

4

9

4

8

1

2

1

2

1

1

XCVU11P-FSGD2104

4

9

4

8

1

2

1

2

1

1

XCVU11P-FLGA2577

4

9

4

8

1

2

1

2

1

1

XCVU13P-FHGA2104

5

11

6

16

1

2

2

2

1

1

XCVU13P-FHGB2104

5

11

6

16

1

2

2

2

1

1

XCVU13P-FHGC2104

5

11

6

16

1

2

2

2

1

1

XCVU13P-FIGD2104

5

11

6

16

1

2

2

2

1

1

XCVU13P-FLGA2577

5

11

6

16

1

2

2

2

1

1

XCVU13P-FSGA2577

5

11

6

16

1

2

2

2

1

1

XCVU19P-FSVA3824(5)(7)

5

11

26

14

2

3

3

5

1

1

XCVU19P-FSVA3824 (thicker boards)(6)(7)

5

11

40

40

4

4

6

6

1

2

XCVU19P-FSVB3824(5)(7)

5

11

26

14

2

3

3

5

1

1

XCVU19P-FSVB3824 (thicker boards)(6)(7)

5

11

40

40

4

4

6

6

1

2

XCVU23P-VSVA1365

2

6

1

1

1

1

2

2

1

1

XCVU23P-FSVJ1760

2

6

1

1

1

1

2

2

1

1

Notes:

1.Connect VCCINT and VCCINT_IO together for -3, -2, and -1 speed grades. The capacitors listed are the total number of capacitors for the combined rail.

2.Connect VCCBRAM and VCCINT_IO together for -2L and -1L speed grades. The capacitors listed are the total number of capacitors for the combined rail.

3.VCCAUX and VCCAUX_IO must share the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

4.The 47 µF capacitor can be combined at one per every four HPIO banks.

5.The XCVU19P devices have land-side capacitors (LSCs) on the bottom side of the packages, which leads to fewer 10 µF capacitors required on the PCB compared to other similar sized devices.

6.This is for boards approximately ³ 200 mil thickness.

7.The XCVU19P devices are recommended to be edge bonded. Refer to the Thermal Specifications chapter of UltraScale and UltraScale+ FPGAs Packaging and Pinouts Product Specification (UG575) [Ref 9] for edge bonding guidelines.

Table A-6:      Virtex UltraScale+ FPGAs Decoupling Capacitor Recommendations for 58G Enabled Devices

 

VCCINT or VCCINT/VCCBRAM/VCCINT_IO/

VCCINT_GT(1)(2)

VCCBRAM/VCCINT_IO/

VCCINT_GT(1)(2)

VCCAUX/VCCAUX_IO(3)

HPIO(4)
(per bank)

330 µF

100 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

XCVU27P-FIGD2104

3

9

4

8

1

2

1

2

1

1

XCVU27P-FSGA2577

3

9

4

8

1

2

1

2

1

1

XCVU29P-FIGD2104

4

10

6

15

1

2

2

2

1

1

XCVU29P-FSGA2577

4

10

6

15

1

2

2

2

1

1

Notes:

1.For non -2LE devices, combine VCCINT, VCCBRAM, VCCINT_IO, and VCCINT_GT to the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

2.For -2LE devices, VCCINT is standalone. Combine VCCBRAM, VCCINT_IO, and VCCINT_GT to the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

3.VCCAUX and VCCAUX_IO must share the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

4.The 47 µF capacitor can be combined at one per every four shared HPIO banks.

Table A-7:      Virtex UltraScale+ FPGAs Decoupling Capacitor Recommendations for HBM Devices

 

VCCINT(1)

VCCBRAM/VCCINT_IO

VCCAUX/VCCAUX_IO(2)

HPIO(3)
(per bank)

330 µF

100 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

47 µF

10 µF

XCVU31P-FSVH1924

1

5

1

1

1

2

1

1

1

1

XCVU33P-FSVH2104

1

5

1

1

1

2

1

1

1

1

XCVU35P-FSVH2104

2

7

2

2

1

2

1

1

1

1

XCVU35P-FSVH2892

2

7

2

2

1

2

1

1

1

1

XCVU37P-FSVH2892

3

9

4

8

1

2

2

2

1

1

XCVU45P-FSVH2104

2

7

2

2

1

2

1

1

1

1

XCVU45P-FSVH2892

2

7

2

2

1

2

1

1

1

1

XCVU47P-FSVH2892

3

9

4

8

1

2

2

2

1

1

XCVU57P-FSVK2892

3

9

4

8

1

2

2

2

1

1

Notes:

1.VCCINT can be standalone or combined with VCCBRAM and VCCINT_IO on the same plane. The capacitors listed are the total number of capacitors for the combined rail.

2.VCCAUX and VCCAUX_IO must share the same plane on the PCB. The capacitors listed are the total number of capacitors for the combined rail.

3.The 47 µF capacitor can be combined at one per every four shared HPIO banks.

Table A-8:      Decoupling Capacitor Recommendations for Virtex UltraScale+ Device HBM Rails

 

VCC_HBM

VCC_IO_HBM

VCCAUX_HBM

100 µF

47 µF

10 µF

100 µF

47 µF

10 µF

47 µF

10 µF

VU31P, VU33P,

VU35P, VU37P,

VU45P, VU47P

VU57P

1

1

2

1

1

1

1

1

Notes:

1.These recommendations are per stack.

2.The step load assumption for VCC_HBM is approximately 1A per stack, and approximately 2A per stack for VCC_IO_HBM.