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SLVA371A Datasheet(PDF) 1 Page - Texas Instruments |
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SLVA371A Datasheet(HTML) 1 Page - Texas Instruments |
1 / 10 page Application Report SLVA371A – February 2010 – Revised April 2010 Powering Freon with TPS65070 Christian Hoefling ..................................................................................... Power Management Products ABSTRACT This documents details the design consideration of a power management unit (PMU) solution for the OMAP-L138 (Freon) low-power applications processor with a TPS65070 five-channel power management device. Contents 1 OMAP-L1x8 Power and Sequencing Requirements ................................................................... 2 1.1 Power Requirements .............................................................................................. 2 1.2 Power-Up Sequence ............................................................................................... 2 1.3 Power-Down Sequence ........................................................................................... 3 2 Sequencing with TPS65070 ............................................................................................... 3 3 Detailed Power Sequence ................................................................................................. 7 4 Test Results ................................................................................................................. 7 List of Figures 1 TPS65070 Power Solution Diagram ...................................................................................... 4 2 Power-Up Sequencing Timing Diagram (1.8-V I/O) .................................................................... 5 3 Power-Up Sequencing Timing Diagram (3.3-V I/O) .................................................................... 6 4 Startup of DC/DC Converters and LDO2 (DCDC2 = 1.8 V) ........................................................... 7 5 Startup of LDO1 and LDO2 (DCDC2 = 1.8 V) .......................................................................... 8 6 Startup of DC/DC Converters and LDO1 (DCDC2 = 3.3 V) ........................................................... 8 7 Startup of LDO1 and LDO2 (DCDC2 = 3.3 V) .......................................................................... 9 All trademarks are the property of their respective owners. 1 SLVA371A – February 2010 – Revised April 2010 Powering Freon with TPS65070 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated |
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