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Note

The tasks and questions below should be looked at as soon as possible since they might be blocking

  •  Does the digital board need the analog ground (AGND)? (see 100kfps DAQ support system)
    •  Probably not but if there's space on connector between analog and digital it might be useful?
     Can the DC/DC architecture be simplified? Some ICs not in stock, see DC/DC converters
    •  Replace LMZ31530 (30A) with TPSM5D1806 in parallel mode (12A) since Vcc_int is estimated at 7A?
      •  No The , the 20A version should be available (LMZ31520)
    •  Replace LT1764 with LT3083 for simpler paralleling circuitry (see power graph)?
  •  Are the ASIC digital supply (G_DS_X) and I/O supply (G_IO_X) shared among all four ASICs?
  •  Do we have the CML current consumption numbers?
    •  Gang is saying around 20mA (15mA + 30% LVT) per ASIC TX Transceiver (for all frequencies). ASIC RX consumption is negligible 
    •  Update power estimation table with these numbers
  •  Request components for Altium library (see Altium Missing Components section)
    •  Connectors have been requested on 2023-08-28
    •  Other ICs
Expand
titleArchived questions
  •  Route +6V or +24V between analog and digital board?
    •  If +6V: All first-stage converters (LT8648S) must be on one the board with the input TFM connector
    •  +24V between boards
  •  For the 0.6V sink:
  •  On which board does the power connector (TFM) go and which type (TFM-112, TFM-115, etc)? (update Connectors section)
    •  TFM-113-02-L-DH was used on the ePixHR250M_2x2_Camera
    •  Analog board
  •  Use FPGA transceivers for clocking the ASICs?
    •  Yes 
    •  One per ASIC?
      •  Yes
      •  I think one per ASIC is the best solution. Is there any reason why we should go for a clock splitter?
        •  Probably no unless we run out of connector pins
  •  Does the digital board need the analog ground (AGND)? (see 100kfps DAQ support system)
    •  Will have it anyway since the TFM power connector is on the digital board

...

ASIC level requirements summary

...

Domain

Portion

Final Voltages


LDOs




DC/DC


DC/DC












ANALOG











ASIC

G_AS_0

1.3V @4.4A

← +1.3V

LT1764 x2 (LDO)

Max 6A (= 3A x2)

← +1.8V (TBD)

TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(85%  efficiency for max load at Vout = 1.8V)

← +6 V




LT8648S x2

42V, 15A Synchronous Step-Down Silent Switcher 2

Max Current = 15*2 = 30A

(Around 93% efficiency for 24 to 6V at max load)

← +24 V



The current drawn by the 0.6V current sink should not be counted twice since its sourced by the G_AS.

The power drawn by the ASIC analog part is 1.3V*4.4A*4= 23W.

If using 1.8V as the LDO input, we are burning also (1.8-1.3)V*4.4A*4 = 9W.

The power drawn by the rest of analog voltages should be less than 2W.


So the power that the DC/DC converters have to provide is around 23 + 9 + 2 = 34W.

Considering the efficiency curves of the DC/DC converters:

34/85%/93% =

43W Total Analog Power

G_AS_1

1.3V @4.4A

← +1.3V

LT1764 x2 (LDO)

Max 6A (= 3A x2)

← +1.8V (TBD)

G_AS_2

1.3V @4.4A

← +1.3V

LT1764 x2 (LDO)

Max 6A (= 3A x2)

← +1.8V (TBD)

TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(85%  efficiency for max load at Vout = 1.8V)

← +6 V

G_AS_3

1.3V @4.4A

← +1.3V

LT1764 x2 (LDO)

Max 6A (= 3A x2)

← +1.8V (TBD)

G_VG_0

0.6V @ -2.75A

← +0.6V

LT3091 x2 (LDO)

Max 3.0A (= 1.5A x2)





← +2.5V






LT3086 (LDO)

Max 2.1A





← +3V


TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(>90%  efficiency for this loads)


← +6 V

G_VG_1

0.6V @ -2.75A

← +0.6V

LT3091 x2 (LDO)

Max 3.0A (= 1.5A x2)

G_VG_2

0.6V @ -2.75A

← +0.6V

LT3091 x2 (LDO)

Max 3.0A (= 1.5A x2)

← +6 V


G_VG_3

0.6V @ -2.75A

← +0.6V

LT3091 x2 (LDO)

Max 3.0A (= 1.5A x2)

G_AS_2V5

2.5V @ <0.5 A

← +2.5V












DIGITAL








ASIC

G_DS_0

1.3V @3A

← +1.3V

LT3086 x2 (LDO)

Max 4.2A (= 2.1A x2)

← +1.8V (TBD)

TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(85%  efficiency for max load at Vout = 1.8V)

← +6 V






LT8648S x2

42V, 15A Synchronous Step-Down Silent Switcher 2

Max Current = 15*2 = 30A

(Around 93% efficiency for 24 to 6V at max load)











← +24 V



For the digital consumption of the ASIC we do not have precise numbers regarding the new CML logic.

Let's assume a double consumption w.r.t the LVDS design.

1.3V*6A = 8W

LDO losses = 0.5*6A = 3W

11W / 85% / 93% = 14W(ASIC Digital)


Regarding the FPGA considering a worst case efficiency of the DC/DC:
17.1W /85%/93% = 21.5W (FPGA)


Worst case scenario, the remaining electronics will draw 1A, multiplied by 5.5V = 5.5W, which before the DCDC will become 5.5W /85 = 7W

42.5W Total Digital Power

G_DS_X

1.3V @???A (CML simulations?)

← +1.3V

LT3086 x2 (LDO)

Max 4.2A (= 2.1A x2)

← +1.8V (TBD)

G_IO_0

1.3V @???A(CML simulations?)

← +1.3V

LT3086 x2 (LDO)

Max 4.2A (= 2.1A x2)

← +1.8V (TBD)

TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(85%  efficiency for max load at Vout = 1.8V)

← +6 V



G_IO_X

1.3V @???A(CML simulations?)

← +1.3V

LT3086 x2 (LDO)

Max 4.2A (= 2.1A x2)

← +1.8V (TBD)






FPGA

VCCINT

0.85V @7.05 A

← +0.85V



LMZ31530
LMZ31520 DC/DC Buck converter

30 20 A

(Around 90% efficiency)

← +6 V

VCCAUX + VCC_1.8V +VCCADC + MGTVCCAUX+ MGTYVCCAUX

1.8V @0.7A 

← +1.8V



TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(85%  efficiency for max load at Vout = 1.8V)

← +6 V


MGTAVCC +MGTYAVCC

0.9V @3.7A

← +0.9V



VCC_1.2V + MGTAVTT + MGTYAVTT 

1.2V @5.5A

← +1.2V



TPSM5D1806 (DC/DC)

PMIC

4.5-V to 15-V input

Dual 6A output

(Between 80 and 90 efficiency)






← +6 V




DAC/ADC/Misc

VDD_5V

+5V @ <1A

← 5V

LT3086 (LDO)

Max 2.1A




← +5.5V (TBD)



VDD_3V3

+3.3V @ <1A

← +3.3V

LT3086 (LDO)

Max 2.1A

VDD_1V8

+1.8V @ <1A

← +1.8V

LT3086 (LDO)

Max 2.1A










85.5W Total Power (Estimation without CML transceivers)

...

Component

Product number

Quantity

Input Voltage

Output Voltage

Max Current

Comment

DC/DC Step Down converterLT8648S43V to 42V0.6V to 42V15A
DC/DC PMICTPSM5D180674.5V to 15V0.5V to 5.5VDual 6A / Single 12A 
DC/DC Buck converterLMZ31530LMZ3152013V to 14.5V0.6V to 3.6V20A30A Not in stock, replace with TPSM846C24? Other option is TPS53355 that is the IC used inside of LMZ31530.version (LMZ31530) not in stock
Low Noise LDOLT176482.7V to 20V1.21V to 20V3ALow Output Noise: 40µVRMS (10Hz to 100kHz)
LDO alternative to LT1764LT308381.2V to 23VAdjustable to 0V3ALow Output Noise: 40μVRMS (10Hz to 100kHz)
Low Noise LDOLT3086121.4V to 40V0.4V to 32V2.1ALow Output Noise: 40µVRMS (10Hz to 100kHz)
Negative Linear RegulatorLT30918–1.5V to –36V0V to –32V-1.5ALow Output Noise: 18µVRMS (10Hz to 100kHz)

...

Gliffy Diagram
size600
displayNamepower-graph
namepower-graph
pagePin3738

Expand
titleePixUHR 140k 2x2 Power Graph

OLD Graph:

...

Expand
titleIO

For single ended → check the electrical specification

Other components

Component

Product number

Board

Operation Voltage

Power consumption

N# I/O needed

Needs substitution?

Quad SPI Configuration Memory

MT25QU01GBBB8E12

Digital

1.8 V

Max 50 mA

4

No, we can use HR pins

JTAG


Digital

1.8/1.5/1.2 V


4

No, we can either use HR or go to 1.2V

Analog Monitor (SlowADC) ADC

ADS1217

Both (key at the analog board, optional at the digital board)

AVDD =3V, DVDD =1.8V

< 1 mA

7

Maybe. The datasheet guarantees operation for digital down to 2.7V,  in HR250 was put at 1.8. Check if it is fine!

Analog Monitor MUX (x5)

MAX4734

may be needed depending on the number of channels we decide to monitor (all voltages and currents to the ASIC, humidity,...)

AVDD =3V

< 1 uA

None

They are controlled by the ADC

Humidity sensor

HIH_5031_001

Analog board

3 V


None

No

Thermistor

NTC_NHQM103B375T10

Carrier

None

No

Oscillators

•371 MHz XLL726371.428571I

•156 MHz 536FB156M250DG

•48 MHz CX3225SB48000D0FPJC1

Digital

2.5 V



Both 1.8 V and 2.5V solutions can be found depending on the voltage we want to use

Clock Fanout

SI53340-B-GM

Digital

2.5 / 1.8V



Now is 2.5, probably can be switch to 1.8, but since its AC-coupled should not matter. Check if we can remove the 2.5 LDO

Clock Jitter cleaner

SI5345_64QFN

Digital

VDD = 3.3V, DVDD =1.8V


12 + n. clks


Programmable Oscillator

LMK61E2

Digital

3.3 V



Used?


High Speed ADC

AD9249

Analog

1.8 V

Max 58mW/channel:

58*12 = 700mW

38

No

ADC_MON_VCM Buffer

AD8607_MSO8

Analog

1.8V




Bias DAC (HV Ring)

MAX5443 (DAC) +

MAX14611 (Level Shifter) +

REF192GS  (Voltage reference)

Analog

3.0 V (VCCA)


4

Maybe? Will the sensors have an HV ring?

ASIC clk fanout

SI53340-B-GM

Analog


Probably not needed

HS DAC (Vcalib_p)

MAX5719A(DAC)+

MAX14611 (Level Shifter) +

OP213 (Buffer)

MAX6126A41+(Vref)

Analog

5V



Why was this chosen? Do we need the 5 V supply?

Level Shifter for Power controllers

MAX3378EETD (x2)

MAX3373E_SOT23_8 (x1)

to be defined

1.8V -> 3.3V




Serial number

DS2411R

Carrier, analog and digital boards

1.8V




System level accounting

FunctionalityIO typeQuantityswitching specification
ASIC control (GR, ...)2.5V SE
Static
SUGOI


SACI


DATACLM?40 + spares?10Gbps
System IO


transceiver

25Gbps

supporting electronics




enablels for power


Slow ADC (current and voltage monitors, temperature sensors...)


HS ADC


serial number




HS DAC


Lower priority needs (R&D on system)


FPGA to FPGA interconnection

requires GT+specific connector

...

Expand
  • Components marked with (green star) are available from the Altium Manufacturer Part Search catalog with symbol and footprint
  • Components marked with (red star) have been created in a temporary library (schematic symbol only) which should be integrated into the OneDrive library at some point
  • Components marked with (blue star) have been requested
    • Components with strikethrough have been created after request

DC/DC

  • LT1764 (green star)
  • LT3091 (green star)
  • LT3086 (green star)
  • LT8648S (green star)
  • TPSM5D1806
  • LMZ31530 LMZ31520 (green star)

Connectors:

  • 30-pin
    • SEAF-30-06.5-S-06-2-A-K (red star)(blue star)
    • SEAM-30-11.0-S-06-2-A-K (red star)(blue star)
  • 50-pin
    • SEAF8-50-05.0-S-10-3 (red star)(blue star)
    • SEAM8-50-S05.0-S-10-3 (red star)(blue star)
  • TFM-115-02-L-DH (blue star)

FPGA:

  • (XCKU15P-2FFVA1156E used earlier in PC_261_101_25_C00)
  • (question) Speed-grade 1 or 2?
    • XCKU15P-1FFVA1760E
    • XCKU15P-2FFVA1760E (red star)

Thermistor, humidity:

  • NHQM103B375T10
  • HIH-5031-001 (green star)

AD/DA:

  • ADS1217 (green star)
  • MAX4734
  • AD8607 (green star)
  • MAX14611
  • REF192GS (green star)
  • MAX5719A
  • OP213 (green star)
  • MAX6126A41

ID:

  • DS2411R (green star)

Optical:

  • 10140369-101LF

Memory:

  • MT25QU01GBBB8E12 (red star)

Oscillator/clock:

  • XLL726371.428571I
  • 536FB156M250DG
  • CX3225SB48000D0FPJC1
  • SI53340-B-GM
  • SI5345_64QFN
  • LMK61E2

Level-shifters:

  • MAX3378EETD

...