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5.1.3 Loads
LOAD1: One output load is an electronic load set for constant-current mode capable of 0 Adc to 4 Adc at
1.05 Vdc.
LOAD2: The other output load is an electronic load set for constant-current mode capable of 0 Adc to 4
Adc at 1.8 Vdc.
5.1.4 Oscilloscope and Probe
The oscilloscope, analog or digital, must be set for ac-coupled measurement with 20-MHz bandwidth
limiting. Use 20-mV/division vertical resolution, 1-µs/division horizontal resolution for output ripple voltage
test.
Oscilloscope probes with exposed conductive ground barrels are recommended.
5.1.5 Recommended Wire Gauge
V
IN
to J3 – The connection between the source voltage VIN and J1 of TPS53129EVM-621 can carry as
much as 2 Adc. The minimum recommended wire size is AWG 16 with the total length of wire less than 2
feet (1-foot input, 1-foot return).
J1 to LOAD1 and J2 to LOAD2 – The connection between J1 and LOAD1, and J2 and LOAD2 of
TPS53129EVM-621 can carry as much as 4 Adc each. The minimum recommended wire size is AWG 14
with the total length of wire less than 2 feet (1-foot input, 1-foot return).
5.1.6 Other Test Equipment
FAN – The TPS53129EVM-621 evaluation module includes components that can become hot to the
touch. Because this EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200-400
lfm is recommended to reduce component temperatures when operating.
5.2 Recommended Setup
Figure 3 shows the recommended test setup to evaluate the TPS53129EVM-621. Working at an ESD
workstation, ensure that any wrist straps, bootstraps, or mats are connected referencing the user to earth
ground before power is applied to the EVM. An electrostatic smock and safety glasses also are
recommended.
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TPS53129EVM-621 Evaluation Module SLVU432–February 2011
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