4 EVM Setup and Operation

This section describes the functionality and operation of the TPS38700Q1EVM. Refer to the TPS38700-Q1

Multichannel I2C Programmable Voltage Sequencer data sheet for details on the electrical characteristics of the

device.

The TPS38700Q1EVM comes pre-populated with the TPS38700C03ARGERQ1. The EVM is capable of

many different configurations in order to fully evaluate the functionality of all the TPS38700-Q1 device

variants. The default configuration of the EVM Jumpers is mentioned in the Table 3-2. The TPS38700Q1EVM

comes populated with I2C bus repeater, comparators, LDO, 32.768 kHz crystal and TPS38700C03ARGERQ1

programmable voltage sequencer.

The TPS38700Q1EVM also provides an option to apply a separate pull-up voltage to any of the ENABLE pins by

changing the position of jumper J6 to VENx and connecting the pull-up voltage to test points TP23.

Equipment Needed

• TPS38700Q1EVM

• TI's USB Interface Adapter (with ribbon cable)

• Power Supply (3.3 V)

• Function Generator (provide pulse input for evaluation)

• Multi-channel Oscilloscope (review evaluation waveforms)

• Jumper Cables (additional evaluation)

4.1 Setup and GUI Installations

Follow the steps below for EVM connections and GUI installation:

1. Connect VBAT (J1) and VDD (J2) to 3.3 V from the power supply.

2. Connect GND (J5) to ground from the power supply.

3. Make sure the jumpers are connected as per the guidelines in the Table 3-2.

4. Power on the power supply briefly to check if the voltage is at 3.3 V and the quiescent current is at 10 mA.

Once reviewed, power down the power supply.

5. Connect the Oscilloscope's channel 1 to TP1, channel 2 to TP2, and channel 3 to TP6.

6. Connect the function generator to TP6.

7. Connect the TI's USB Interface Adapter to J19 using a ribbon cable.

8. Connect the TI's USB Interface Adapter to the computer using the USB.

9. Final connections should look similar to . Figure 4-1.

www.ti.com

EVM Setup and Operation

SNVU771A – JULY 2021 – REVISED APRIL 2022

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TPS38700Q1EVM Voltage Sequencer

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