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7 Test Procedure
7.1 Line/Load Regulation and Efficiency Measurement Procedure
1. Set up the EVM as described in
2. Ensure Load is set to constant resistance mode and to sink 0 A
3. Ensure the switch S1 is set per
4. Increase VIN from 0 V to 12 V. Using V1 to measure VIN voltage.
5. Set the switch S1 to Enable position to enable the controller.
6. Use V2 to measure VOUT voltage, A1 to measure VIN current.
7. Vary load from 0 A
DC
8. Vary V
from 8.0 V to 22 V. V
IN
9. Set the switch S1 to Disable position to disable the controller.
10. Decrease load to 0 A.
11. Decrease VIN to 0 V.
7.2 List of Test Points
TEST POINTS
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
7.3 Equipment Shutdown
1. Shut down VIN.
2. Shut down Load.
3. Shut down FAN.
SLUU943A – MAY 2012 – REVISED DECEMBER 2021
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Section 5
and
Figure
Section
6.
to 8 A
. V
should remain in load regulation.
DC
OUT
should remain in line regulation.
OUT
Table 7-1. Test Point Functions
NAME
VIN
Input voltage
GND
GND
VREG5
Output of 5-V linear regulator
SS
Soft-start ramp voltage
EN
Enable pin
SW
Switching node
VOUT
Output voltage
GND
GND
GND
GND
GND
GND
Copyright © 2021 Texas Instruments Incorporated
5-2.
.
DC
DESCRIPTION
TPS53014 Buck Controller Evaluation Module User's Guide
Test Procedure
7
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