Texas Instruments TPS40051 - Manual (Page 12)

SLUU161 – April, 2003
12 TPS40051-Based Design Converts 12-V Bus to 1.8 V at 15 A (SLUP195)
6.3 Output Ripple and Transient Response
Figure 6 shows the typical output voltage ripple with I
OUT
=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.
Figure 6
t – Time – 1
µ
s/div
IOUT = 15 A
VRIPPLE
(10 mV/div)
OUTPUT VOLTAGE RIPPLE
Figure 7
t – Time – 200
µ
s/div
VOUT = 50 mV/div
IOUT 5 A/div
TRANSIENT RESPONSE
7 EVM Assembly Drawing and PCB Layout
Figure 8. Top Side Component Assembly