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EVM Assembly Drawings and Layout

5.4 Switch Node

Figure 8. TPS40192EVM-525 Switching Waveforms,

CH1: SW(TP9), CH2: HDRV(TP8), CH3: LDRV(TP10); Vin = 14 V, Vout = 1.8 V, Iout = 10 A

6 EVM Assembly Drawings and Layout

The following figures (Figure 9 through Figure 14) show the design of the TPS40192EVM-525

printed-circuit board. The EVM has been designed using a 4-layer, 2-oz copper-clad circuit board

1.20-inch × 1.00-inch with all components in a 1.25-in. × 0.8-in. active area on the top side and all active

traces to the top and bottom layers to allow the user to easily view, probe, and evaluate the TPS40192

control IC in a practical double-sided application. Moving components to both sides of the PCB or using

additional internal layers can offer additional size reduction for space-constrained systems.

Figure 9. TPS40192EVM-525 Component Placement (Viewed From Top)

SLUU395–December 2009 Using the TPS40192EVM-525, A 12-V Input, 1.8-V Output, 10-A Synchronous

Buck Converter

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