AM437x Discrete Power Reference Design


Design files


The Sitara AM437x simplified power sequence feature provides flexibility to power designers. This reference design implementation is a BOM-optimized discrete power solution for the AM437x processor with a minimal number of discrete ICs and basic feature set. The solution represents a baseline of a discrete power solution that can be extended for additional features and capabilities of the AM437x processor.


  • Simplified, BOM-optimized discrete power solution for the Sitara AM437x processor.
  • AM437x includes an integrated LDO that simplifies processor power sequencing requirements.
  • Systems without controlled power down can greatly benefit from this feature since the integrated LDO always ensures power up/down sequencing is met for VDDS and VDDSHVx supplies
  • The TLV62565 step down converter provides the 3.3 volt supply and the TLV62080 provides the 1.1 volt supply.
  • Two TLV702xx low drop out regulators (LDOs) provide the 1.5-V and 1.8-V supplies.
  • TLV803M voltage supervisor keeps the processor in reset until all rails are operational and to reset the processor when input power is lost.
  • This design is tested and includes schematics, BOM, design guide, and test data.
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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.


Detailed schematic diagram for design layout and components


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


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


Includes TI products in the design and potential alternatives.

Arm-based processors

AM4376Sitara processor: Arm Cortex-A9, PRU-ICSS

Data sheet: PDF | HTML
Arm-based processors

AM4377Sitara processor: Arm Cortex-A9, PRU-ICSS, EtherCAT

Data sheet: PDF | HTML
Arm-based processors

AM4378Sitara processor: Arm Cortex-A9, PRU-ICSS, 3D graphics

Data sheet: PDF | HTML
Arm-based processors

AM4379Sitara processor: Arm Cortex-A9, PRU-ICSS, EtherCAT, 3D graphics

Data sheet: PDF | HTML
Buck converters (integrated switch)

TLV620801.2A High Efficient Step Down Converter in 2x2mm SON Package

Data sheet: PDF | HTML
Buck converters (integrated switch)

TLV625651.5A Buck Converter in SOT23 Package

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV702300-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Supervisor & reset ICs

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

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
User guide Discrete Power Solution for AM437x (Rev. A) Dec. 01, 2017

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