Power Solution for C667x DSP AVS Core (CVDD) with Dynamic Voltage Scaling

(ACTIVE) TIDEP0011

Description & Features

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Description

This reference design aims to supply the AVS core supply (CVDD) in the Keystone Multicore DSPs, mainly the C66x series. The C66x series uses SmartReflex technology to enable the DSP to control its supply voltage. In order to meet this requirement, this design combines a Synchronous Buck Converter (TPS56121) with the voltage Programmer for POL (LM10011). The LM10011 accepts a 6-bit or 4-bit VCNTL from the DSP and changes the output voltage of the TPS56121 to what the DSP requires. The LM10011 has a high accuracy (1.0%) accuracy allowing  additional system margin in the remaining power supply components and distribution. For processors which require specific initial startup voltages the LM10011 can be configured to start up at one of 16 selectable currents.

Features
  • 1.0% Output Current Accuracy (0°C to +100°C)
  • 1.25% Output Current Accuracy (–40°C to +125°C)
  • Input Voltage Range: +2.97V to +5.5V
  • Pin Selectable VID Format (6/4 bit)
  • 16 Selectable Start-Up Currents
  • Precision Enable to Support Custom UVLO
  • Tested reference design that includes schematic, design files, bill of materials, and test data.

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Schematic/Block Diagram

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Design Files

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Bill of Materials (BOM)

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Part Number Status

TIDEP0011:
Power Solution for C667x DSP AVS Core (CVDD) with Dynamic Voltage Scaling

ACTIVE

TI Devices (10)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM10011  1% Accuracy 4/6-Bit VID Voltage Programmer for Point of Load Regulator w/ Adj Start-Up Current  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
TLV704  24V Input Voltage, 150mA, Ultra-Low-Iq Low-Dropout (LDO) Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
TMS320C6670  Multicore Fixed and Floating-Point System-on-Chip  C6000 DSP  Not Available View Design Kits & Evaluation Modules
TMS320C6671  Fixed and Floating-Point Digital Signal Processor  C6000 DSP  Not Available View Design Kits & Evaluation Modules
TMS320C6672  Multicore Fixed and Floating-Point Digital Signal Processor  C6000 DSP  Not Available View Design Kits & Evaluation Modules
TMS320C6674  Multicore Fixed and Floating-Point Digital Signal Processor  C6000 DSP  Not Available View Design Kits & Evaluation Modules
TMS320C6678  Multicore Fixed and Floating-Point Digital Signal Processor  C6000 DSP  Not Available View Design Kits & Evaluation Modules
TPS54320  4.5V to 17V Input, 3A Synchronous Step-Down SWIFT™ Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS54521  17V Input, 5A Synchronous Step-Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS84320  4.5-V to 14.5-V Input, 3-A Synchronous Buck, Integrated Power Solution  Step-down (buck)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM10011 Download Download
TLV704 Download Download
TMS320C6670 Download Download
TMS320C6671 Download
TMS320C6672 Download Download
TMS320C6674 Download Download
TMS320C6678 Download Download
TPS54320 Download Download
TPS54521 Download Download
TPS84320 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1268 13 Jun 2014 16
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 2171 13 Jun 2014 7
ZIP 17 13 Jun 2014 12
PDF 276 13 Jun 2014 45

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