Texas Instruments 10A, 12V Input, 1.8V Output Synchronous Buck Converter using the TPS40192 and NexFET MOSFETs TPS40192E TPS40192EVM-525 Datenbogen
Produktcode
TPS40192EVM-525
Network
Analyzer
Isolation
Transformer
FAN
TEXAS INSTRUMENTS
FEATURING
TPS40192EVM-525
Short
V1
+
-
A1
-
+
V
VIN
LOAD1
1.8V @
10A
-
+
V2
-
+
Test Setup
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Figure 4. Control Loop Measurement Setup
4.3
Start-Up/Shutdown Procedure
1. Increase V
IN
from 0 V to 12 Vdc.
2. Vary LOAD1 from 0 to10 Adc.
3. Vary V
3. Vary V
IN
from 8 Vdc to 14 Vdc.
4. Decrease LOAD1 to 0 A.
5. Decrease V
5. Decrease V
IN
to 0 Vdc.
4.4
Output Ripple Voltage Measurement Procedure
1. Increase V
IN
from 0 V to 12 Vdc.
2. Adjust LOAD1 to desired load between 0 Adc and 10 Adc.
3. Adjust VIN to desired load between 8 Vdc and 14 Vdc
4. Connect oscilloscope probe to TP15 and TP16 as shown in
3. Adjust VIN to desired load between 8 Vdc and 14 Vdc
4. Connect oscilloscope probe to TP15 and TP16 as shown in
5. Measure output ripple.
6. Decrease LOAD1 to 0 A.
7. Decrease V
6. Decrease LOAD1 to 0 A.
7. Decrease V
IN
to 0 Vdc.
10
Using the TPS40192EVM-525, A 12-V Input, 1.8-V Output, 10-A Synchronous
SLUU395 – December 2009
Buck Converter
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