www.ti.com

TEST SET-UP

4

TEST SET-UP

This section describes how to properly set-up and use the LMZ3150xEVM-692 evaluation module.

4.1

Input/Output Connections

The LMZ3150xEVM-692 is provided with input/output connectors and test points as shown in Table 4. A

power supply capable of supplying 4 A must be connected to J1 through a pair of 20 AWG wires. The

jumper across J3 must be in place. See Section 3.6 for split input voltage rail operation. The load must be

connected to J7 through a pair of 20 AWG wires. The maximum load current capability must be 6 A. Wire

lengths must be minimized to reduce losses in the wires. Test-point TP1 provides a place to monitor the

V

voltage with TP12 as the ground reference.

Table 4. EVM Connectors and Test Points

REF DES

LABEL

DESCRIPTION

J1

PVIN

Primary VIN connector

J2

VBIAS

VBIAS input voltage input connector

J3

VIN

Jumper used to connect VIN to PVIN. EVM default setting connects VIN to PVIN.

J7

VOUT

VOUT connector

J4

VADJ

VOUT selection. Default VOUT is 3.3 V.

J11

FREQ

Switching frequency selection. Default frequency is 630 kHz.

J6

TR_IN

TRACK IN connector. J5 provides two divider settings.

J5

SS_TR

Track voltage select jumper. Used with J6.

J9

INH_UVLO

Enable jumper. Install shunt to inhibit the power supply.

J8

INH_UVLO

Selects UVLO for power supply turn on. Default setting is for 8-V UVLO.

J10

STSEL

Internal slow start select jumper. Install shunt for internal slow start.

TP1

PVIN

PVIN circuit point

TP3

VBIAS

VBIAS circuit point

TP6

VIN

VIN circuit point

TP4

VOUT

VOUT circuit point

TP2, TP12

GND

Power grounds

TP15

AGND

Analog ground

TP7

TR_IN

Track input

TP8

SS_TR

Tracking input after divider

TP9

PWRGD

Power good status

TP14

RT/CLK

SYNC input

TP10

COMP

Error amplifier output

TP13

PH

Switch node

TP11

INH_UVLO

Inhibit and UVLO input

VOUT remote sense node connected to J7 pin 2. TP5 can be used for measuring the loop

TP5

SENSE+

response along with changing R1 to 49.9

Ω.

5

SNVU295 – JULY 2013

Evaluation Module

Submit Documentation Feedback

Copyright © 2013, Texas Instruments Incorporated