5 Test Setup
5.1 Equipment
5.1.1 Voltage Source
The input voltage source (V
IN
) shall be a 0-V to 25-V variable dc source capable of supplying 3 Adc minimum.
5.1.2 Meters
A1:
0-Adc to 5-Adc, ammeter
V1:
V
IN
, 0-V to 25-V voltmeter
V2:
V
OUT1
, 0-V to 2-V voltmeter
V3:
V
OUT2
, 0-V to 2-V voltmeter
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
VIN to J3 –
The connection between the source voltage V
IN
and J1 of TPS53126EVM-600 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
TPS53126EVM-600 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 TPS53126EVM-600 evaluation module includes components that can get hot to 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
shows the recommended test setup to evaluate the TPS53126EVM-600. 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.
Test Setup
8
TPS53126 Buck Controller Evaluation Module User's Guide
SLVU435A – FEBRUARY 2011 – REVISED JANUARY 2022
Copyright © 2022 Texas Instruments Incorporated
