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This document should be referenced along with the other key AM263x collateral references. These include:
•
The
AM263x Sitara™ Microcontroller Data Sheet
multiplexing options.
•
The SYSCONFIG [6] pinmux planning tool should be utilizing when starting a new AM263x pinout and driver
utilization.
•
The
AM263x Sitara™ Microcontroller Technical Reference Manual
peripheral subsystem from a conceptual, usage and programming model perspective.
•
The AM263x MCU-SDK [10] ties the data sheet and technical reference manual together with core and
peripheral software usage examples.
1.1 Acronyms
Acronym
Description
EVM
Evaluation Module. Referencing TI PCB assemblies such as the AM263x controlCard (TMDSCNCD263) or
AM263x LaunchPad (LP-AM263)
PDN
Power Distribution Network. The active and passive components providing regulated power to a load such as the
AM263x MCU power pins.
EMI
Electromagnetic Interference
PI
Power Integrity
SI
Signal Integrity
BOM
Bill of Materials
2 Power
2.1 Discrete DC-DC Power Solution
The AM263x Launchpad and AM263x controlCard EVM designs both integrate a set of buck-converter, DC-DC
regulators that may be useful as a reference power solution for some systems. This solution consists of a pair of
TPS62913 buck-converter regulators for AM263x MCU core, system digital and analog I/O power, and a set of
TPS74801 LDO for powering paired industrial Ethernet PHY.
Current and transient requirements of the DC-DC closed-loop and passive power plane and decoupling network
are taken from the previously shown power consumption and transient loading tables. Many DC-DC regulators
can be matched to fit within these requirements and the maximum power consumption.
It is also recommended to use the power-good generation circuits available on these and similar DC-DC
regulators to drive the power on reset (PORz) into the AM263x.
SPRABJ8 – SEPTEMBER 2022
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[1] is the primary resource for all device pinout and pin-level
Table 1-1. Acronyms Used in This Document
Copyright © 2022 Texas Instruments Incorporated
[2] documents detail each core and
AM263x Hardware Design Guide
Introduction
3
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