Datasheet

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4.2.2 Diagram
LOAD 1
1 . 8V @
6 A
-
+
FAN
TP13
TEXASINSTRUMENTS
TPS40040 EVM-001
5Vto 1.8V @ 10A
HPA188
J2
V 2
-
+
TP15
TP14
Pre-Bias
See TipandBarrel
Measurementfor
Voutripple
+
-
-
+
V 1
+
-
A 1
-
+
V
VIN
TP8 TP7 TP6 TP5 TP9 TP10 TP11 TP12TP3
GND SWHDRV LDRV CH1 GND CH 2 GNDENABLE
TP2
TP1
Oscilloscope
J1
1M , AC
20mV/div
20MHz
W
TP15TP14
MetalGroundBarrel
ProbeTip
TipandBarrelVoutripple
measurement
Test Setup
Figure 2. TPS40040EVM-001 Recommended Test Set-Up
Figure 3. Output Ripple Measurement – Tip and Barrel using TP14 and TP15
SLUU266 – January 2007 Using the TPS40040EVM-001: A 12-V Input, 1.8-V Output, 10-A Synchronous Buck Converter 9
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