Simple 6-Channel Power Supply Sequencing Reference Design for Multi-rail Outputs


Design files


PMP10711 is a 6-channel power supply sequencer that utilizes two LM3880 3-channel sequencer ICs. The design uses an external AND gate and OR gate to power up and power down all 6 channels in sequential fashion. This is useful in cases when up to 6 power rails need to be sequenced during power up and power down.

  • Up to 6-Channel Sequencing
  • Powers Up and Down in Sequential Order
  • 2-layer PCB
  • Small Solution Size (about 500 mil x 400 mil)
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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.

TIDUB06.PDF (577 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


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


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


Includes TI products in the design and potential alternatives.


LM38803 Rail Simple Power Sequencer with Fixed Time Delay

Data sheet: PDF
AND gates

SN74AHC1G081-ch, 2-input 2-V to 5.5-V high-speed (9 ns) AND gate

Data sheet: PDF | HTML
OR gates

SN74AHC1G321-ch, 2-input 2-V to 5.5-V high-speed (9 ns) OR gate

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10711 Test Results Nov. 09, 2015
Technical article A simple six-channel power-rail sequencing solution PDF | HTML Nov. 16, 2015

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