Техническая Спецификация для Texas Instruments High Performance Synchronous Buck Evaluation Module Using TPS51125A TPS51125AEVM TPS51125AEVM
Модели
TPS51125AEVM
Electronic
Load1
Electronic
Load2
DMM1
DMM2
12V/10A
Power Supply
DMM3
+
_
+
_
+
_
DMM4
Oscilloscope
CH1
CH2
Oscilloscope
+
_
VO2_GND
VO2
CN2
VO1
VO1_GND
VBAT_GND
VBAT
TP1
CN1
HPA557
TPS51125AEVM
+
_
+
_
_
+
1MW
Electronic
Load1
Electronic
Load2
DMM1
DMM2
12V/10A
Power Supply
DMM3
+
_
+
_
+
_
DMM4
Oscilloscope
CH1
CH2
Oscilloscope
+
_
VO2_GND
VO2
CN2
VO1
VO1_GND
VBAT_GND
VBAT
TP1
CN1
HPA557
TPS51125AEVM
VO2_GND
VO2
CN2
VO1
VO1_GND
VBAT_GND
VBAT
TP1
CN1
HPA557
TPS51125AEVM
+
_
+
_
_
+
1MW
Test Setup and Results
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4
Test Setup and Results
4.1
Test Setup
Connect test equipment and TPS51125AEVM board as shown in
Figure 2. Equipment Setup for TPS51125AEVM board
4.2
Test Procedure
1. Ensure the switches SW1 (ENTRIP1), SW2 (ENTRIP2) and SW3 (EN0) are in “OFF” position.
2. Ensure the shunt jumper for JP1 is set 5-pin to 6-pin (Med1), and shunt jumper for JP2 is set 3-pin to
2. Ensure the shunt jumper for JP1 is set 5-pin to 6-pin (Med1), and shunt jumper for JP2 is set 3-pin to
4-pin (Auto-skip).
3. Apply appropriate VBAT voltage to VBAT and VBAT_GND terminals.
4. Turn on SW3 (EN0), and both VREG5 (5V-LDO) and VREG3 (3.3V-LDO) start up.
5. When SW3 stays on, VREF (2V-REF) enables.
6. When SW3 stays on and turn on SW1 (ENTRIP1), CH1-output starts up.
7. When SW3 stays on and turn on SW2 (ENTRIP2), CH2-output starts up.
4. Turn on SW3 (EN0), and both VREG5 (5V-LDO) and VREG3 (3.3V-LDO) start up.
5. When SW3 stays on, VREF (2V-REF) enables.
6. When SW3 stays on and turn on SW1 (ENTRIP1), CH1-output starts up.
7. When SW3 stays on and turn on SW2 (ENTRIP2), CH2-output starts up.
4
High Performance Synchronous Buck EVM Using the TPS51125A
SLUU408 – FEBRUARY 2010
Copyright © 2010, Texas Instruments Incorporated