Datasheet

TPS51218EVMEnablePre-biasstartup

t-Time-1ms/div

1.1Voutputpre-bias

12Vin,1.2V/0A forcedPWM

CH1:1.2Vin

CH2:Enable

CH3:1.2Vout

CH4:PGOOD

TEXAS

INSTRUMENTS

EVM Assembly Drawing and PCB Layout

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6.8 Output 1.1-V Prebias Turnon

Figure 12. Output 1.1V Prebias Turnon

7 EVM Assembly Drawing and PCB Layout

Figure 13 through Figure 18 show the design of the TPS51218EVM printed-circuit board. The EVM has

been designed using a four-layer, 2-oz copper circuit board.

Figure 13. TPS51218EVM Top Layer Assembly Drawing, Top View

Using the TPS51218EVM-496 High-Performance, Single Synchronous, SLVU346–January 2010

Step–Down Controller for High-Current, Eco-mode™ Applications

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