EVM Setup
4
SBVU056 – December 2019
Copyright © 2019, Texas Instruments Incorporated
TPS7A54EVM-031 Evaluation Module
2
EVM Setup
This section describes how to properly connect and set up the TPS7A54EVM-031, including the jumpers
and connectors on the EVM board.
2.1
Input/Output Connectors and Jumper Descriptions
2.1.1
J1 – VIN
Input power-supply voltage SMA jack connector.
2.1.2
J2 – VIN
Input power-supply voltage standard banana jack connector. Twist together the positive input lead and
ground return lead from the input power supply, and keep them as short as possible to minimize input
inductance. Add additional bulk capacitance between the input supply and ground (use the C1 footprint) if
the supply leads are greater than six inches. For example, an additional 47-µF electrolytic capacitor
connected from the input supply (J1) to ground can improve the transient response of the
TPS7A5401RPS, and eliminates unwanted ringing on the input because of long wire connections.
2.1.3
J3 – EN
Output enable. To enable the output, connect a jumper to short VIN to EN.
2.1.4
J4 – VOUT
Output voltage SMA jack connector.
2.1.5
J5 – PG
Pullup-voltage selector for PG. This EVM is designed so that PG can be pulled up either to VOUT by
shorting J5, or pulled up to another voltage by applying an external voltage to the PG post.
2.1.6
J6 – VOUT
Output voltage standard banana jack connector.
2.1.7
J7 – BIAS
Bias voltage standard banana connector.
If the input supply (VIN) voltage is less than 1.4 V but greater than 1.1 V, use a bias voltage of 3.0 V to
6.5 V to provide power to the TPS7A5401RPS. If the input voltage is greater than 1.4 V, the BIAS pin
does not have to be connected. The BIAS supply pin typically consumes 2.3 mA.
2.1.8
J8 – GND
Input and Bias ground return connector.
2.1.9
J9 – GND
Output ground return connector.
2.1.10
J10 -- GND
Inout and Bias ground return connector.
2.1.11
J11
6 × 1 header, can be used as test points for LDO inputs and outputs.
