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JDK105BJ225MV Datasheet(PDF) 1 Page - Texas Instruments |
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JDK105BJ225MV Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page Application Report SLVA341A – June 2009 – Revised May 2010 High-Efficiency Power Solution Using DC/DC Converter With DVFS Andy Dykstra ................................................................................. PMP - DC/DC Low-Power Converters ABSTRACT This reference design helps those desiring to design-in the TMS320C6742, TMS320C6746, TMS320C6748 and OMAP-L138. This design, employing sequenced power supplies, describes a system with an input voltage of 5 V, and uses a high-efficiency DC/DC Converters with integrated FETs and DVFS for a small, simple system. Sequenced power supply architectures are becoming commonplace in high-performance microprocessor and digital signal processor (DSP) systems. To save power and increase processing speeds, processor cores have smaller geometry cells and require lower supply voltages than the system bus voltages. Power management in these systems requires special attention. This application note addresses these topics and suggests solutions for output voltage sequencing. Contents 1 Introduction .................................................................................................................. 2 2 Power Requirements ....................................................................................................... 2 3 Features ...................................................................................................................... 3 4 List of Material ............................................................................................................... 6 List of Figures 1 PMP4979 Reference Design Schematic ................................................................................. 4 2 Optional Circuit for DVDD_A, DVDD_B, and DVDD_C ................................................................ 5 3 Sequencing in Start-Up Waveform ....................................................................................... 7 4 Efficiency vs Output Current .............................................................................................. 7 5 Efficiency vs Output Current .............................................................................................. 7 6 Efficiency vs Output Current ............................................................................................... 7 1 SLVA341A – June 2009 – Revised May 2010 High-Efficiency Power Solution Using DC/DC Converter With DVFS Copyright © 2009–2010, Texas Instruments Incorporated |
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