Power Sequencing for K2E Using UCD9090 with PMBus
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Description

The K2E devices require power supplies to be sequenced in a proper order. This design demonstrates power sequencing for the 66AK2Ex and AM5K2Ex families of KeyStone II ARM+DSP and ARM-only multicore processors by use of the UCD9090. The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and monitor. The UCD9090 provides both sequence and timing of the power supply enables. This design shows a power sequencing implementation specific to the K2E EVM platform.

Features
  • Power supply sequencing reference implementation for the 66AK2Ex and AM5K2Ex SoCs.
  • Uses UCD9090 for power supply sequencing and monitoring for nine voltage rails.
  • Uses the Fusion Digital Power Designer Software to configure and program the UCD9090.
  • Complete system reference with schematics, BOM, design files, and HW Design Guide, implemented on the K2E EVM platform for testing and evaluation.

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Schematic/Block Diagram

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Design Guide

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
66AK2E05  Multicore DSP+Arm, 4x Arm A15 cores, 1x C66x DSP core, NetCP, 10GbE switch  Digital signal processors (DSP)  Sample & Buy View Design Kits & Evaluation Modules
AM5K2E02  Sitara processor: dual Arm Cortex-A15  Sitara processors  Not Available View Design Kits & Evaluation Modules
AM5K2E04  Sitara processor: quad Arm Cortex-A15  Sitara processors  Sample & Buy View Design Kits & Evaluation Modules
UCD9090  10-Channel Sequencer and System Health Monitor  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCD9090 Download Download

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Technical documentation

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Third party documents (1)
Title Date Type
K2E EVM Technical Information (eInfochips) 31 Mar 2015
Application notes (1)
Title Type Size (KB) Date
PDF 1772 24 Mar 2014
User guides (1)
Title Type Size (KB) Date
PDF 2759 31 Mar 2015
Design files (6)
Title Type Size (KB) Date
ZIP 4863 31 Mar 2015
ZIP 22 31 Mar 2015
ZIP 60 31 Mar 2015
PDF 239 31 Mar 2015
ZIP 7495 08 Oct 2014
ZIP 26925 08 Oct 2014

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