12mm x 12mm, 5-Rail Power Sequencing for Application Processors Reference Design


Design files


This reference design demonstrates a validated and cost competitive power sequencing solution for an application processor or a high performance control platform. This design supports 5 different voltage rails, optimized with layout space of 12 mm × 12 mm. The design is also capable of adjusting delay time and re-configuring specific voltage level for each rail to fit different input capacitors and different processors' requirements.

  • Validated power sequencing solution for application processors
  • Correct power up/down sequence, even for uncontrolled power off at various load situations
  • Power tree efficiency is maintained high both at heavy load and at a light load
  • Small layout space of power supply: area smaller than 12 mm × 12 mm
Communications equipment
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRWC0.PDF (1072 K)

Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Detailed overview of design layout for component placement

TIDRWC3.ZIP (2861 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRWC1.PDF (4523 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TLV625682.5V-5.5V input, 1A high efficiency step-down buck converter in SOT23 and SOT563 package

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TLV625692.5V-5.5V input, 2-A high efficiency step-down buck converter in SOT23 and SOT563 package

Data sheet: PDF | HTML
Arm-based processors

AM3358Sitara processor: Arm Cortex-A8, 3D graphics, PRU-ICSS, CAN

Data sheet: PDF | HTML
ESD protection diodes

TPD4S012Quad 0.8-pF, 5.5-V, ±10-kV ESD protection diode with 15-V tolerant Vbus for USB Interface<

Data sheet: PDF | HTML
General-purpose transceivers

SN74LVC1G06Single 1.65-V to 5.5-V inverter with open-drain outputs

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74LVC2G2412-ch, 1.65-V to 5.5-V buffers with 3-state outputs

Data sheet: PDF | HTML

LM38813 rail simple power sequencer with adjustable time delay

Data sheet: PDF | HTML
Supervisor & reset ICs

TLV8033-pin voltage supervisor (reset IC) with active-low & open-drain reset

Data sheet: PDF | HTML
USB power switches & charging port controllers

TPS2051B0.5A loading, 2.7-5.5V, 70mΩ USB power switch, active-high

Data sheet: PDF | HTML
Wi-Fi products

WL1837MODWiLink™ 8 industrial dual band, 2x2 MIMO Wi-Fi®, Bluetooth® & Bluetooth Smart module

Data sheet: PDF | HTML

Start development


Design tools & simulation

Simulation model

TIDA-01568 Simulation — TIDM018.ZIP (1800 K)

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Design guide Discrete Power Solution for AM335x in 12mmx12mm Form-Factor Reference Design (Rev. A) PDF | HTML Nov. 09, 2021
Technical article How to manage processor power during uncontrolled power off PDF | HTML Jun. 21, 2018

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​