Texas Instruments TPS53014 Evaluation Module TPS53014EVM-126 TPS53014EVM-126 データシート
製品コード
TPS53014EVM-126
Configurations
6
Configurations
6.1
Enable/Disable Switch S1
The TPS53014EVM-126 is equipped with a switch (S1) to drive the EN pin of the TPS53014. When S1 is
in the Enable position, EN is connected to VIN, and the TPS53014 is enabled and generates a regulated
1.05-V output. When S1 is in the Disable position, EN is connected to GND, and the TPS53014 enters a
high impedance output state.
in the Enable position, EN is connected to VIN, and the TPS53014 is enabled and generates a regulated
1.05-V output. When S1 is in the Disable position, EN is connected to GND, and the TPS53014 enters a
high impedance output state.
Default setting: set S1 to the Disabled position to disable the controller
7
Test Procedure
7.1
Line/Load Regulation and Efficiency Measurement Procedure
1. Set up EVM as described in
and
2. Ensure Load is set to constant resistance mode and to sink 0 A
DC
.
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 0-8 A
DC
, VOUT should remain in load regulation.
8. Vary VIN from 8.0 V to 22 V, VOUT should remain in line regulation.
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
Table 2. Test Point Functions
TEST POINTS
NAME
DESCRIPTION
TP1
VIN
Input voltage
TP2
GND
GND
TP3
VREG5
Output of 5-V linear regulator
TP4
SS
Soft-start ramp voltage
TP5
EN
Enable pin
TP6
SW
Switching node
TP7
VOUT
Output voltage
TP8
GND
GND
TP9
GND
GND
TP10
GND
GND
7.3
Equipment Shutdown
1. Shut down VIN.
2. Shut down Load.
3. Shut down FAN.
7
SLUU943 – May 2012
Single Synchronous Step-Down Controller for Low-Voltage Power Rails
Copyright © 2012, Texas Instruments Incorporated