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5.5 EN/SYNC Configuration
5.5.1 EN High (Default)
5.5.2 External Synchronization
Test Set Up
Configure JP1 with a jumper as shown in Figure 4 . The controller will generate its own clock and the
operation is enabled.
Figure 4. Default EN Configuration
Configure JP1 with a jumper as shown in the following figure and connect a clock source to SYNC and
GND pins of J2 as shown in Figure 6 . The controller will synchronize to the external clock.
Figure 5. EN/SYNC Configuration
Figure 6. Connect External Clock to J2
SLVU198A – February 2007 – Revised May 2007 Using the TPS40131EVM, A 40A Single Output 9
Two-Phase Synchronous Buck Converter
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