SPRS950F December 2015 – May 2019 DRA745 , DRA746 , DRA750 , DRA756
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
Three power net parameters derived from a PCB’s PDN dynamic analysis are the Loop Inductance (LL), Impedance (Z) and PCB Frequency of Interest (Fpcb).
PDN Analysis: | Static | Dynamic | Number of Recommended Decoupling Capacitors per Supply | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Supply | Max Reff(7)
[mΩ] |
Dec. Cap.
Max LL (8)(6) [nH] |
Impedance
[mΩ] |
Frequency
of Interest [MHz] |
100 nF(6) | 220 nF | 470 nF | 1μF | 2.2 μF | 4.7 μF | 10 μF | 22 μF |
vdd_mpu | 10 | 2 | 57 | 20 | 12 | 2 | 2 | 3 | 1 | 1 | 1 | |
vdd_dspeve | 13 | 2.5 | 54 | 20 | 8 | 1 | 1 | 2 | 1 | 1 | 1 | |
vdd | 27 | 2 | 87 | 50 | 6 | 1 | 1 | 1 | 1 | 1 | ||
vdd_gpu | 18 | 2.5 | 207 | 50 | 6 | 1 | 1 | 1 | 1 | 1 | ||
vdd_iva | 48 | 2 | 800 | 100 | 5 | 1 | 1 | |||||
vdds_ddr1 | 10 | 2.5 | 200 | 100 | 8 | 4 | 2 | 2 | 1 | |||
vdds_ddr2 | 10 | 2.5 | 200 | 100 | 8 | 4 | 2 | 2 | 1 | |||
cap_vbbldo_dspeve | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vbbldo_gpu | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vbbldo_iva | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vbbldo_mpu | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_core1 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_core2 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_core3 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_core4 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_core5 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_dspeve1 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_dspeve2 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_gpu | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_iva | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_mpu1 | N/A | 6 | N/A | N/A | 1 | |||||||
cap_vddram_mpu2 | N/A | 6 | N/A | N/A | 1 |
NOTE
For power IC which can support more than 10µF close to processor, a bulk capacitor of at least 22µF is strongly recommended for VDD_MPU power domains.