4.2 EVM Setup
• Use the VIN S+ and VIN S– test points along with the VOUT S+ and VOUT S– test points located near the
power terminal blocks as voltage monitoring points where voltmeters are connected to measure the input and
output voltages, respectively.
Do not use these sense terminals as the input supply or output load connection
points.
The PCB traces connected to these sense terminals are not designed to support high currents.
• Header J5 provides access to the following test points:
– VIN
– PGND
– EN
– PGOOD
– VOUT
– BODE
The power-good (PGOOD) test point is available to monitor when a valid output voltage is present on the
EVM. Refer to
for specific information related to the various test points.
• The
VOUT SELECT
header (J3) allows selection of the required output voltage:
– 1.2 V
– 1.8 V
– 2.5 V
– 3.3 V
– 5 V
Before applying power to the EVM, make sure that the jumper is present and properly positioned for the
intended output voltage. Always remove input power before changing the jumper settings.
• The
FSW SELECT
header (J4) allows selection of a suitable switching frequency:
– 500 kHz
– 600 kHz
– 750 kHz
– 800 kHz
– 1 MHz
This establishes an acceptable ripple current for the integrated buck inductor based on the circuit
requirements, specifically the input voltage range and output voltage. Before applying power to the EVM,
make sure that the jumper is present and properly positioned for the intended switching frequency. Always
remove input power before changing the jumper settings.
Note
Choose a switching freqeuency that aligns with the output voltage setting. For example, the following
list contains typical settings that yield 30% to 40% inductor peak-to-peak ripple current and optimal
slope compensation contribution:
• 1.2 V at 500 kHz
• 1.8 V at 500 kHz
• 2.5 V at 500 kHz or 600 kHz
• 3.3 V at 750 kHz or 800 kHz
• 5 V at 800 kHz or 1 MHz
TLVM13660 Quickstart Calculator
and
for additional guidance pertaining to module setup and component selection.
Test Setup and Procedure
8
TLVM13660 36-V, 6-A Buck Regulator Evaluation Module User's Guide
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