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VSYS_5V0
VSYS_5V0
R156
10.0k
TPS62913_2_EN_SYNC
TPS62913_2_SCONF
R160
18.2k
GND
Figure 2-3. AM263x LP-AM263 Schematic Excerpt 3.3 V System Digital/Analog I/O Power Implementation
Figure 2-4. AM263x LP-AM263 Schematic Excerpt – Power Good Implementation (see PORz Reset
2.2 Integrated PMIC Power Solution
To support integrated power and safety monitoring a power-management IC (PMIC) chip-set solution based on
the TPS653850-Q1 PMIC, TPS62130A buck-converter, and TPS3703A power supervisors is currently proposed.
For additional details on this PMIC safety solution offering, contact your local field sales team.
2.3 Power Decoupling and Filtering
Table 2-1
describes the initial BGA decoupling and power filtering required for the AM263x. These were based
on the initial simulation feedback of the Control Card EVM PCB and AM263x package with the above transient
use-cases.
The decoupling network presented in the below sections and in the AM263x EVM schematics and layouts
are reasonable starting points for any AM263x PCB design. However, due to specific PCB routing differences
and the resulting plane capacitance and decoupling mounting inductances and other parasitics, it is highly
recommended that designers simulate and measure their specific power distribution network performance.
Simulations and measurements should ideally be done with target application software active, and intended
operating environment conditions applied to the system.
SPRABJ8 – SEPTEMBER 2022
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U32
6
VIN
1
EN/SYNC
10
S-CONF
7
PSNS
NR/SS
PGND
TPS62913RPUR
GND
VSYS_5V0
TPS62913_2_FB
C179
C180
35V
35V
10µF
10µF
GND
VSYS_3V3
PG_VDD_1V2
PG_VSYS_3V3
Implementation as well)
Copyright © 2022 Texas Instruments Incorporated
2.2uH
TPS62913_2_SW
2
SW
74438356022
3
VO
TPS62913_2_FB
9
FB
TPS62913_2_NR_SS
8
PG_VSYS_3V3
5
PG
4
GND
GND
VSYS_3V3
R162
15.4k
FB:
Resistor divider to scale output voltage
nominal to 0.8V reference voltage for
internal comparator
R163
4.99k
GND
R295
R296
10.0k
10.0k
PG_VDD_1V2
PG_VSYS_3V3
L3
C169
C170
22µF
22µF
10V
10V
C177
GND
470nF
25V
AM263x Hardware Design Guide
Power
VSYS_3V3
C171
10V
47uF
5
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