SLUU186 − March 2004

6.3Output Ripple and Transient Response

Figure 6 shows the typical output voltage ripple with IOUT=15 A to be less than 20 mVpp.

The transient response is shown in Figure 7 as the load is stepped from 5 A to 15 A. The voltage deviation is less than 60 mV.

OUTPUT VOLTAGE RIPPLE

TRANSIENT RESPONSE

IOUT = 15 A

VOUT = 50 mV/div

VRIPPLE (10 mV/div)

 

IOUT 5 A/div

t − Time − 1 s/div

t − Time − 200 s/div

Figure 6

Figure 7

7 EVM Assembly Drawing and PCB Layout

Figure 8. Top Side Component Assembly

12TPS40055-Based Design Converts 12-V Bus to 1.8 V at 15 A (HPA070)

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Texas Instruments HPA070 manual EVM Assembly Drawing and PCB Layout, Output Ripple and Transient Response