Texas Instruments SWIFT TPS561201EVM-896 1-A, User Manual, Page: 4 / 18

Test Setup and Results
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4 SLVUB34 – April 2017
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TPS561201EVM-896 1-A, SWIFT™ Regulator Evaluation Module
4 Test Setup and Results
This section describes how to properly connect, set up, and use the TPS561201EVM-896. The section
also includes test results typical for the evaluation modules and efficiency, output load regulation, output
line regulation, load transient response, output voltage ripple, input voltage ripple, start-up, and switching
frequency.
4.1 Input/Output Connections
The TPS561201EVM-896 is provided with I/O connectors and test points as shown in Table 4 . A power
supply capable of supplying 1 A must be connected to J1 through a pair of 20-AWG wires. The load must
be connected to J2 through a pair of 20-AWG wires. The maximum load current capability is 1 A. Wire
lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the
V
IN
input voltages with TP2 providing a convenient ground reference. TP7 is used to monitor the output
voltage with TP8 as the ground reference.
Table 4. Connection and Test Points
Reference
Designator
Function
J1 V
IN
(see Table 1 for V
IN
range)
J2 V
OUT
, 1.05 V at 1-A maximum
JP1 EN control. Shunt EN to GND to disable, shunt EN to V
IN
to enable.
TP1 V
IN
positive monitor point
TP2 GND monitor test point
TP3 EN test point
TP4 Switch node test point
TP5 Test point for loop response measurements
TP6 V
OUT
positive monitor point
TP7 GND monitor test point
TP8 GND monitor test point
4.2 Start-Up Procedure
1. Ensure that the jumper at JP1 (Enable control) pins 1 and 2 are covered to shunt EN to GND, disabling
the output.
2. Apply appropriate V
IN
voltage to VIN (J1-2) and GND (J1-1).
3. Move the jumper at JP1 (Enable control) from pins 1 and 2 (EN and GND), to pins 2 and 3 (EN and
V
IN
) enabling the output.