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LOAD1
1.05V @
4A
FAN
V2
+
-
Oscilloscope
1MW, AC
20mV / div
20MHz
LOAD2
1.8V @
4A
V3
-
+
-
+
-
+
A1
-
+
V
VIN
V1
+
-
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Test Setup
5.2.2 Test Setup Diagram
Figure 2. TPS53125EVM-599 Recommended Test Setup
5.3 Start-Up/Shutdown Procedures
Perform the start-up and shutdown procedures in the following manner.
1. Increase V
IN
from 0 V to 12 Vdc.
2. Vary LOAD1 from 0 V – 4 Adc.
3. Vary LOAD2 from 0 V – 4 Adc.
4. Vary V
IN
from 8 Vdc to 22 Vdc.
5. Decrease V
IN
to 0 Vdc.
6. Decrease LOAD1 to 0 A.
7
SLVU392–July 2010 TPS53125EVM-599
Copyright © 2010, Texas Instruments Incorporated