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Scroll pdf title
titlePower supply options diagram

 

1.2 V, 2.5 V and 3.3 V voltage rails are provided by corresponding step-down regulator DC/DC converters, each one capable of providing up to 3 A of output current. These three regulators are synchronized to switch with 120° phase lag, to improve EMC, and to reduce input ripple. The synchronization circuit can be omitted in cost sensitive applications (please contact Trenz Electronic).
Power supply inputs and outputs are made available at B2B connectors JM4 and JM5 for user applications.

(warning)

Each pin of B2B connectors JM4 and JM5 is capable of a maximum current of 1.0 A.

Scroll pdf title
titleOn-board power rails summary.

power-rail
name

nominal
voltage (V)

maximum
current (A)

power
source

system
supply

user
supply

Vb2b

4.0 to 7.0

4.0

(4 pin × 1.0 A/pin)

JM5

module

-

Vusb

5.0

0.5

J1

module

-

Vsup

4.0 to 7.0

< 0.5

Vusb

3 × DC/DC

DC/DC sync

power-fail

JM5 (≤1.0 A)

< 4

Vb2b

3.3V

3.3

3.0

Vsup â-º DC/DC

module

JM4 (≤1.0 A)

JM5 (≤1.0 A)

2.5V

2.5

3.0

Vsup â-º DC/DC

DDR SDRAM

JM5 (≤1.0 A)

1.2V

1.2

3.0

Vsup â-º DC/DC

VCCINT

JM5 (≤1.0 A)

VCCAUX

2.5

0.3

3.3V â-º LDO

VCCAUX

JM4 (≤1.0 A)

3.3

< 3.0

3.3V

VCCCIO0

2.5

< 3.0

2.5V

VCCO
(bank 0)

JM4 (≤1.0 A)

3.3

< 3.0

3.3V

JM4 (≤1.0 A)

1.10 to 3.60

2.0

(2 pin × 1.0 A/pin)

JM4

(30 + 44)

JM4

(30 / 44)

...

    • ensure the noise level on power rail VCCUAX is suitable to your application;
    • avoid the connection of noise sources to power rail VCCUAX.

 


Scroll pdf title
titleAssembly option for VCCAUX = 3.3 V (bottom view).

Image Modified

Any other assembly combination of L2 and U6 is not allowed.

  • VCCCIO0
    VCCCIO0 supplies VCCO to FPGA bank 0. The following assembly options are possible:

 

(warning)

Pins 30 and 44 of JM4 are power supply inputs in this case.

 

    1. if resistor R131 is not populated and R132 is populated, VCCCIO0 power rail is set to power rail 2.5V (nominal voltage = 2.5 V).

      Scroll pdf title
      titleAssembly option for VCCIO0= 2.5 V (bottom view).

       

      (warning)

      Pins 30 and 44 of JM4 are power supply outputs in this case.

    2. if resistor R131 is populated and R132 is not populated, VCCCIO0 power rail is set to power rail 3.3V (nominal voltage = 3.3 V). This is the default.

      Image Removed
       

      Figure 12: assembly
      Scroll pdf title
      titleAssembly option for VCCCIO0 = 3.3 V (bottom view).
       
      Image Added

      (warning)

      Pins 30 and 44 of JM4 are power supply outputs in this case.

    3. if both resistors R131 and R132 are not populated, VCCCIO0 power can be supplied through pins 30 and 44 of B2B connector JM4.
      Image Removed
      Figure 10: assembly

      Scroll pdf title
      titleAssembly option for VCCAUX = off (bottom view)
      Image Added

        

Image Modified

Assembly option where both R131 and R132 are populated is not allowed

.

1.2 V, 2.5 V and 3.3 V voltage rails are provided by corresponding step-down regulator DC/DC converters, each one capable of providing up to 3 A of output current. These three regulators are synchronized to switch with 120° phase lag, to improve EMC, and to reduce input ripple. The synchronization circuit can be omitted in cost sensitive applications (please contact Trenz Electronic).
Power supply inputs and outputs are made available at B2B connectors JM4 and JM5 for user applications.

(warning)

Each pin of B2B connectors JM4 and JM5 is capable of a maximum current of 1.0 A

.

Power Supervision

Power-on Reset

...