Datasheet

TPS53128EVM-620

Output Ripple

Test Condition: Vin 12 V, VO1 1.05 V, 4 A

TPS53128EVM-620

Output Ripple

Test Condition: Vin 12 V, VO1 1.8 V, 4 A

TPS53128EVM-620

Switch Node

Test Condition: Vin 12 V, VO2 1.8 V, 4 A

TPS53128EVM-620

Switch Node

Test Condition: Vin 12 V, VO1 1.05 V, 4 A

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EVM Assembly Drawings and Layout

7.3 Output Voltage Ripple

Figure 8. Output Voltage Ripple Figure 9. Output Voltage Ripple

7.4 Switch Node Waveforms

Figure 10. Switching Waveform Figure 11. Switching Waveform

8 EVM Assembly Drawings and Layout

The following figures (Figure 12 through Figure 17) show the design of the TPS53128EVM-620 printed

circuit board. The EVM has been designed using a 4-layer, 2-oz copper-clad circuit board of 3.5 inch by

2.7 inch to allow the user to easily view, probe and evaluate the TPS53128 control IC in a practical

application. Moving components to both sides of the PCB or using additional internal layers can offer

additional size reduction for space constrained systems.

SLVU433–February 2011 TPS53128EVM-620

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