User's Guide
SNVU492 – January 2016
TPS61194xEVM Evaluation Module
1
Preface
1.1
About this Manual
This user’s guide describes the module used to evaluate characteristics, operation, and use of the
TPS61194 high-performance 4-channel LED driver for industrial backlighting, test and measurement
equipment, and TPS61194-Q1 for automotive lighting. This document includes a schematic diagram, PCB
layout, and bill of materials (BOM).
1.2
Related Documentation from Texas Instruments
TPS61194 (
) and TPS61194-Q1 (
) data sheets.
1.3
FCC Warning
This equipment is intended for use in a laboratory test environment only. It generates, uses, and can
radiate radio frequency energy and has not been tested for compliance with the limits of computing
devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable
protection against radio frequency interference. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user, at their own expense, will be
required to take whatever measures may be required to correct this interference.
1.4
If You Need Assistance
Contact your local TI sales representative.
2
Introduction
The Texas Instruments TPS61194xEVM evaluation module (EVM) helps designers to evaluate the
operation and performance of the TPS61194 or TPS61194-Q1 device. The TPS61194xEVM uses the
TPS61194 or TPS61194-Q1 to drive up to 4 LED strings for LCD backlighting with high efficiency.
Information about output voltage and current ratings of the TPS61194 or TPS61194-Q1 can also be found
in the device data sheets (
and
).
A power supply connection for the V
IN
and test points for each signal can be found on the evaluation
board. A separate LED board can be used as a load; it is also possible to connect LCD panel to the output
connectors.
For evaluation purposes, the EVMs have been tested over a 4.5-V to 40-V input range. This voltage range
is within the recommended operating range for input voltage of the TPS61194 or TPS61194-Q1. Users
are cautioned to evaluate their specific operating conditions and choose components with the appropriate
voltage ratings before designing this circuitry into a final product.
4
TPS61194xEVM Evaluation Module
SNVU492 – January 2016
Copyright © 2016, Texas Instruments Incorporated