Texas Instruments TPS62933, Руководство пользователя, Страница: 4 / 20

Table 4-1. Connection and Test Points
Reference Designator Function
J1 V
OUT
, 5V at 3-A maximum
J2 V
IN
(see Table 1-1 for V
IN
range)
JP1 Different frequency choice by changing the state of RT pin
JP2 V
IN
divider
JP3 EN control. Shunt EN to GND to disable
JP4 PG or SS version choice
TP1 V
OUT
positive monitor point
TP2 V
OUT
positive power point
TP3 V
IN
positive monitor point
TP4 V
IN
positive power point
TP5, TP6 GND power point
TP7, TP9, TP13, TP14,TP15, TP16, TP17 GND monitor point
TP8 Switch node test point
TP10 Test point for loop response measurements
TP11 EN test point
TP12 SS test point
TP18 PGOOD test point
4.2 Start-Up Procedure
1. Ensure that the jumper at JP3 (Enable control) pins 2 and 3 are covered to shunt EN to GND, disabling the
output.
2. Apply appropriate V
IN
voltage to VIN (J2-1) and GND (J2-2).
3. Move the jumper at JP3 (Enable control) pins 2 and 3 (EN and GND) to enable the output.
4.3 Load Transient Response
The TPS62933EVM response to load transient is shown in Figure 4-2 and Figure 4-3 . The current steps and
slew rates are indicated in the figures with 20MHz scope bandwidth. Total peak-to-peak voltage variation is as
shown.
VOUT = 200mV/div (AC coupled)
IOUT = 2A/div
100uS/div
Figure 4-2. TPS62933EVM Load Transient Response, 1 A - 3 A Load Step, 0.8 A/µs
Test Setup and Results www.ti.com
4 TPS62933EVM-129 3-A Regulator Evaluation Module SLUUCH1 – JUNE 2021
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