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TPS54292 Datasheet(PDF) 27 Page - Texas Instruments

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Part # TPS54292
Description  1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54292 Datasheet(HTML) 27 Page - Texas Instruments

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3.3V@1.5A
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1.2V@1.5A
TPS54290, TPS54291, TPS54292
www.ti.com
SLUS973 – OCTOBER 2009
Design Example 2 (Cascading Operation)
TPS5429x can be configured as cascaded operation as shown in Figure 25. The 12-V input supply is applied to
PVDD2 and the the channel 2 output is tied to PVDD1. The channel 2 output is 3.3 V and capable of supporting
1.5 A to the load while generating power for the 1.2-V input for channel 1.
Figure 25. Cascading Operation
Design Example 2 Test Results
For Figure 26, Ch1: 12-V supply; Ch2: VOUT1 (1.2 V); Ch3: VOUT2(3.3 V). For Figure 27, Ch1: Channel 1 SW
node; Ch2: Channel 1 output ripple Ch3: Channel 2 output ripple; Ch2: Channel 2 SW node.
Figure 26. Start-Up Waveforms
Figure 27. Output Ripple and SW Nodes
Copyright © 2009, Texas Instruments Incorporated
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