SLLU326A May   2022  – June 2022 TLIN1431-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Features
    2. 1.2 Description
  4. 2EVM Setup and Features
    1. 2.1  Startup Mode Configurations
      1. 2.1.1 Pin and SPI Modes
      2. 2.1.2 Wake Request (WKRQ) vs. Inhibit Output (INH)
    2. 2.2  Commander and Responder Configurations
    3. 2.3  Local Wake-Up
    4. 2.4  Channel Expansion
    5. 2.5  VBAT Voltage Divider
    6. 2.6  Reset Input
    7. 2.7  Logic-Level LIMP and WAKE Signals
    8. 2.8  High-Voltage Signal Monitoring
    9. 2.9  TXD and RXD
    10. 2.10 VCC Load Testing
    11. 2.11 SPI Interface
  5. 3Jumpers, Headers, Connectors, Test Points, and Switches
  6. 4Bill of Materials
  7. 5Schematic

1.2 Description

The TLIN1431EVM provides users with the ability to evaluate the TI TLIN1431-Q1 family of single-channel LIN SBCs, which include LDO, wake, high-side switch, watchdog, integrated battery voltage divider, LIMP, and channel expansion functionality. The EVM allows both commander and responder mode applications to be evaluated through the use of a single jumper that connects or disconnects the external 1 kΩ pull-up resistor and series diode required in commander mode applications on the LIN bus.

The EVM has access to the integrated VCC rail from the device LDO. This LDO output can be used as logic-level input voltages for the logic pins of the TLIN1431-Q1. The TLIN14315-Q1 includes a 5-V LDO, and the high-level logic inputs to the device can range from 2 V to 5.25 V, though the biasing of the PIN/nCS pin determines whether 3.3 V SPI or 5 V SPI is used (known as “VIOless” capability). This allows the TLIN14315-Q1 to interface with both 3.3 V and 5 V logic levels. The TLIN14313-Q1 includes a 3.3-V LDO, and the high-level logic inputs to the device range from 2 V to 3.6 V, allowing interfacing with 3.3 V systems.

Non-populated pads are included on TXD, RXD, and LIN to accommodate a variety of different tests requiring various capacitive load conditions. Additionally, the LIN signal contains a non-populated SOD-323 footprint on LIN allowing for the implementation of an ESD1LIN24-Q1 protection device as desired.

The TLIN SBC family supports both 12 V and 24 V automotive applications and is operated with a supply voltage from 5.5 V to 28 V, and is capable of handling supply/battery voltages up to 42 V. The LIN bus provides extended bus fault protection of ±58 V.

External headers with power and LIN bus connections allow for the EVM to be evaluated in a larger system. Additional, channel expansion outputs provide the capability of interfacing with another device, such as a TCAN1042-Q1 or a TLIN1021-Q1 (or other TCAN and TLIN devices) as applicable.

The wake input functionality of the TLIN1431-Q1 is accessible in many ways, including via external interface or push-button wake.