Texas Instruments BOOSTXL-TLC6946EVM, User Manual, Page: 4 / 12

Test Setup
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4 SLVUBE8 – May 2018
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TLC6946 Evaluation Module
Table 1. Jumpers J2–J4
Jumper Position With Shunt Function
25 mA Set maximum constant-output sink current to 25 mA
10 mA Set maximum constant-output sink current to 10 mA
2.4 mA Set maximum constant-output sink current to 2.4 mA
GND Connect IREF with GND to verify IREF Resistor Short Protection (ISP)
2.4.3 Signal Input Jumpers - J5, J6, and J10
This BOOSTXL-TLC6946EVM provides BoosterPack connector J5 and J6 to connect with the MSP-
EXP432P401R LaunchPad™ for a quick software start.
To use other controllers or data generator, the signals can be input through J10.
2.4.4 LOD Function Verification Jumpers – J7, J8, and J9
Jumpers J7–J9 are used to verify the LED-Open Detection (LOD) function. Using the MSP-EXP432P401R
LaunchPad to drive the EVM, D16–D18 can work as indicators for LOD. If using other controllers or data
generator, the LOD data can be read from SOUT (TP9).
Table 2 contains the definitions for jumpers
J7–J9.
Table 2. Jumpers J7–J9
Designator
Attached
Function
Without Shunt Result
J7
LOD for LED D0
Red
LED D0 red is open and D16 turns ON if using MSP-EXP432P401R LaunchPad
configuration
J8
LOD for LED D0
Green
LED D0 green is open and D17 turns ON if using MSP-EXP432P401R LaunchPad
configuration
J9
LOD for LED D0
Blue
LED D0 blue is open and D18 turns ON if using MSP-EXP432P401R LaunchPad
configuration
3 Test Setup
Table 3 shows the typical parameters for the BOOSTXL-TLC6946EVM. Table 3 contains the BOOSTXL-
TLC6946EVM parameters.
Table 3. BOOSTXL-TLC6946EVM Parameters
Parameter Value
Input voltage for VCC 3 V to 5.5 V
Input voltage for VLED 17 V Maximum
Input Current for VLED 1.2-A Maximum
Follow these steps for the EVM test setup:
1. Using J1 to select whether using the same power supply for VCC, VLED. Set the voltage of the DC
power supply for VCC and VLED and set the current limit to 1.5 A.
2. Connect the positive and negative outputs of the power supply to connectors VCC, VLED and GND on
the EVM board.
3. Select the positions of J2–J4 and make sure J7–J9 have shunts.
4. Connect the MSP-EXP432P401R LaunchPad with the EVM through J5 and J6.
5. Power up the VCC, VLED and send the signal to change LED status and check LOD and ISP
functions.