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8 SLUUC13A – May 2019 – Revised August 2019
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TPS92682EVM Constant Current Two-channel Boost and Boost-to-Battery
User's Guide
SLUUC13A – May 2019 – Revised August 2019
TPS92682EVM Constant Current Two-channel Boost and
Boost-to-Battery
This user's guide describes the specifications, board connection description, characteristics, operation,
and use of the TPS92682-Q1 constant current (CC) mode in boost and boost-to-battery configurations.
The TPS92682-Q1 device implements a fixed-frequency peak current mode control technique with
programmable switching frequency, slope compensation, and soft-start. Additional features include wide
input voltage range (4.5 V to 65 V), programmable spread spectrum frequency modulation, programmable
fault handling, and adjustable output current setting. A complete schematic diagram, printed circuit board
layouts, and bill of materials are included in this document.
1 Trademarks
SimpleLink, LaunchPad are trademarks of Texas Instruments.
2 Description
The TPS92682EVM-70 solution provides a two channel, constant current boost and boost-to-battery LED
current regulator which is configurable via serial peripheral interface (SPI). The EVM is designed to
operate with an input voltage in the range of 6.5 V to 20 V. The EVM provides maximum output power of
25 W for boost channel and 15 W for the boost-to-battery channel. The TPS92682EVM-70 provides high
efficiency, SPI programmable fault handling, I
LED
setting, and spread-spectrum. The channel-1 of the EVM
is configured as CC boost and channel-2 as CC boost-to-battery.
2.1 Typical Applications
This document outlines the operation and implementation of the TPS92682-Q1 as a two-channel boost
and boost-to-battery LED current regulator with the specifications listed in
Table 3 . For applications with a
different input voltage range or different I
LED
range, refer to the TPS92682-Q1 data sheet. The MSP-
EXP432E401Y SimpleLink™ Ethernet MSP432E401Y MCU LaunchPad™ Development Kit controls the
TPS92682EVM-70 evaluation board. The
MSP-EXP432E401Y is available on TI website. However, any
SPI controller can be used to program the TPS92682EVM board. Ensure that the LaunchPad board from
TI has been programmed before running the GUI. The programming instructions are provided in
Section 7 .
2.2 Warnings
Observe the following precaution when using the TPS92682EVM-70 evaluation module.
Caution hot surface. Contact may cause burns. Do not touch.
2.3 Connector Description
Table 1 describes the connectors and Table 2 lists the test points on the EVM and how to properly
connect, set up, and use the TPS92682EVM-70.
Figure 1 shows the connection diagram and the default jumper locations of the TPS92682EVM-70.