Texas Instruments TPS40192 Evaluation Module TPS40192EVM-001 TPS40192EVM-001 Datenbogen
Produktcode
TPS40192EVM-001
www.ti.com
Network
Analyzer
LOAD1
1.8V @
6A
-
+
FAN
Oscilloscope
1M!, AC
20mV / div
20MHz
V2
+
-
See Tip and Barrel
Measurement for
Vout ripple
V1
+
-
A1
-
+
V
VIN
Isolation
Transformer
TP20
TEXAS INSTRUMENTS
TPS40192EVM-001
12V to 1.8V @ 10A
HPA198
TPS40192EVM-001
12V to 1.8V @ 10A
HPA198
J2
TP16
TP15
Pre-Bias
+
-
-
+
TP7 TP9 TP10 TP8
TP12 TP11 TP13 TP14
GND
LDRV
SW
HDRV
CH1 GND CH2 GND
TP2
TP1
J1
TP4 TP3
Disable
TP6
COMP
TP19
TP18
TP17
External Source
GND
PGOOD
4.3
Start-Up/Shutdown Procedure
4.4
Output Ripple Voltage Measurement Procedure
Test Setup
Figure 3. Control Loop Measurement Setup
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.
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.
Using the TPS40192EVM-001, A 12-V Input, 1.8-V Output, 10-A Synchronous Buck Converter
10
SLVU194 – January 2007