Texas Instruments TPS92520EVM-133, Руководство пользователя

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1 Description
This user's guide describes the specifications, board connection description, characteristics, operation, and use
of the
TPS92520-Q1 , dual 1.6-A synchronous buck LED driver evaluation module (EVM). The TPS92520-Q1
device implements an adaptive on-time average current mode control and is designed to be compatible with
shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-
time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor
current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output
voltage and ambient temperature range.
Additional features include wide input voltage range (4.5 V to 65 V), programmable switching frequency,
programmable analog and PWM dimming techniques, advanced SPI programmable diagnostic and fault
protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short, thermal
warning and thermal shutdown. An onboard 10-bit ADC samples critical input parameters required for system
health monitoring and diagnostics. Complete schematic diagrams, printed circuit board layouts, and bill of
materials are included in this document.
1.1 Typical Applications
This document outlines the operation and implementation of the TPS92520-Q1 as dual-synchronous buck
constant current (CC) LED driver with the specifications listed in Table 2-1 . For applications with a different input
voltage range or different output voltage range, see the TPS92520-Q1 4.5-V to 65-V Dual 1.6-A Synchronous
Buck LED Driver with SPI Control Data Sheet . The LEDMCUEVM-132 Development Tool controls the
TPS92520EVM-133 evaluation board. The LEDMCUEVM-132 is available on TI website. Alternatively, any SPI
controller board can control the TPS92520EVM-133 . After the LED MCU EVM board is obtained from the TI
website, the board must be programmed according to the instructions provided in this design guide. The
program instructions are provided in
Section 5 .
1.2 Warnings
Observe the following precaution when using the TPS92520EVM-133 evaluation module.
Caution hot surface. Contact may cause burns. Do not touch.
1.3 Connector Description
Table 1-1 describes the connectors and Table 1-2 lists the test points on the EVM and how to properly connect,
set up, and use the TPS92520EVM-133 .
Figure 1-1 shows the connection diagram and the default jumper locations of the TPS92520EVM-133 .
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Micro USB Cable to PC
LEDMCUEVM-132
TPS92520EVM-133
www.ti.com Description
SLUUCC4 – OCTOBER 2020
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TPS92520EVM-133 Dual 1.6-A Synchronous Buck LED Driver Evaluation
Module
5
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