# # CPU DDR4 Reference & Terminator Supply # ----- # # Disco-Kraken Key-In Components File # --------------------------------------------- # # # Original Rev. 13-Mar-2023 # Most Recent Rev. 15-Nov-2023 # # # This file holds all of the components for the # DDR4 Reference & Terminator Supplies for the CPU # section of the FPGA/CPU. # # # This is a Relatively Placed Component Set comps file. # # # I will center this file on U1941 the power supply # chip for the CPU DDR4 Reference and Terminator supply. # # As a nominal starting location, place U1941 at # X = -13.50 mm and Y = -80.00 mm wrt the FPGA/CPU. # # # Board_Location # Ref Part_Number Symbol Geometry X Y Properties #----- ----------- ------ ------------------ ---------------- ---------- # U1941 TPS51200 SY_JUNK VSON_10 0.00 0.00 1 270 # # Bypass Caps on the BULK_3V3 Vin Aux Power power supply chip pin 10: # C1941 Cap_22_uFd_10_V_1206 SY_JUNK Cap_1206 5.80 -2.00 1 0 C1942 Cap_100_nFd_16_V_0402 SY_JUNK Cap_0402 1.40 -3.00 1 0 # # Bypass Caps on the DDR4_1V2 VLDO_IN Power power supply chip pin 2: # C1943 Cap_22_uFd_10_V_1206 SY_JUNK Cap_1206 5.60 3.90 1 0 C1944 Cap_100_nFd_16_V_0402 SY_JUNK Cap_0402 1.00 4.00 1 90 # # Bypass Caps on the DDR4 Terminator Power Output power supply chip pin 3: # C1945 Cap_100_nFd_16_V_0402 SY_JUNK Cap_0402 -0.50 4.00 1 90 C1946 Cap_22_uFd_10_V_1206 SY_JUNK Cap_1206 -5.00 3.90 1 0 # # Bypass Caps on the DDR4 Reference Output from the power supply chip pin 6: # C1947 Cap_100_nFd_16_V_0402 SY_JUNK Cap_0402 -3.50 -1.00 1 90 # # Reference Input to the power supply chip pin 1: # C1948 Cap_100_nFd_16_V_0402 SY_JUNK Cap_0402 4.00 0.90 1 90 R1941 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 9.50 2.50 1 90 R1942 Res_10.0k_Ohm_0603 SY_JUNK Res_0603 9.50 -1.50 1 90 # # Voltage Monitor on the Output of this Terminator Supply: # R1943 Res_220_Ohm_0603 SY_JUNK res_0603 -6.0 -1.5 1 0 C1949 Cap_1_uFd_25_V_0603 SY_JUNK Cap_0603 -6.0 1.5 1 0