Texas Instruments TIC12400 Manuale utente

SCPU036–October 2017

TIC12400 Evaluation Module

User's Guide

SCPU036–October 2017

TIC12400 Evaluation Module

This user's guide describes the characteristics, operation, and use of the TIC12400 Evaluation Module

(EVM).

Contents

1 Introduction ................................................................................................................... 2

2 Hardware...................................................................................................................... 4

3 SWITCH BOARD Hardware Description ................................................................................. 8

4 GUI Software Installation.................................................................................................. 11

5 TIC12400 GUI Application ................................................................................................ 14

6 Board Files.................................................................................................................. 39

List of Figures

1 TIC12400 EVM Block Level Diagram..................................................................................... 2

2 TIC12400 EVM, SWITCH BOARD, and USB to USB-Mini Cable..................................................... 4

3 EVM, SWITCH BOARD, USB Cable, PC, and Power Supply Setup................................................. 4

4 EVM Hardware Top Description........................................................................................... 5

5 EVM Hardware Bottom Description ...................................................................................... 6

6 Setup_TIC12400-0.4.0_EVM.exe........................................................................................ 11

7 Installation Steps 1–6...................................................................................................... 12

8 Figure 3. Installation Steps 7–13......................................................................................... 13

9 Double Click on “App Center EVM GUI” Shortcut to Open........................................................... 14

10 GUI Home Page............................................................................................................ 14

11 Device Configuration Page ............................................................................................... 17

12 Channel Configuration Page.............................................................................................. 21

13 Page Connections.......................................................................................................... 39

14 Main Device................................................................................................................. 40

15 USB interface............................................................................................................... 41

16 <Caption> ................................................................................................................... 41

17 Input filters – IN10-IN23 use 10 Ωinstead of 220 Ω................................................................... 41

18 SWITCH Board Schematic................................................................................................ 42

External Micro

Connector

MSP430

(U1)

3.3-V

Regulator

(U4)

INx

Connector

Channel

0í23

Battery or Power

Supply

5-V

Regulator

(U9)

Input Filter

Channel IN0to IN23

Test Point Test Point

DNP

TXB0106

(U10)

TIC12400

(U11)

VDD

IN0

IN1

IN2

IN23

SPI

INT

RST

USB

Connector

x24

ONBOARD EVM MONITORS:

x VDD Current Monitor (INA226A, U12)

x VSCurrent Monitor (INA226A, U13)

x Ambient Air Temp Monitor (TMP102AQ, U5)

x Case Temp Monitor (TMP102AQ, U2)

I2C

SPI

INT

RST

SPI

INT

RST

Introduction

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1 Introduction

The TIC12400 is a multiple switch detection interface that is designed to detect the opening and closing of

up to 24 switch contacts. 10 out of the 24 inputs are configurable to detect switch states that are either

battery connected switches (BCS) or ground connected switches (GCS), which means it can either sink or

source current from the channel. The remaining 14 channels are design to support ground connected

switches only (source current). The wetting current can be preprogrammed to six available values, which

accommodates for different application scenarios. Communication to and from the device is done using a

24-bit SPI protocol.

The TIC124000 and TIC12400-Q1 provide the same functionality and the TIC12400 Evaluation Module is

used for both devices.

Figure 1. TIC12400 EVM Block Level Diagram

The TIC12400 EVM is an evaluation module for the Texas Instruments TIC12400 and it provides basic

functionality evaluation for the device. When used together with the switch board, the EVM allows testing

of its functionality via SPI communication established to the PC using the USB adaptor.

Caution Hot surface.

Contact may cause burns.

Do not touch.

The DUT of the board can get hot when all channels are enabled at

the highest wetting current settings in continuous mode

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Introduction

SCPU036–October 2017

TIC12400 Evaluation Module

1.1 Warnings

+12.0 V

Power

Supply

EVMSWITCH BOARD

USB

Hardware

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2 Hardware

2.1 Kit

Two boards, EVM (TIC12400EVM) and SWITCH BOARD (TIC12400_SWB), are provided with an USB to

USB-MINI cable within the KIT; see Figure 2.

Figure 2. TIC12400 EVM, SWITCH BOARD, and USB to USB-Mini Cable

2.2 Connection to the PC and Powering up the EVM

A mini-USB cable is used to connect the EVM board to the PC. The VDD of the EVM is powered by the

USB’s VBUS. The positive terminal of the Power Supply is connected to the “VBAT” terminal of both the

EVM and SWITCH BOARD. The negative terminal of the power supply is connected to the “GND” terminal

of the EVM. Turn ON the power supply and set it to a nominal supply of +12 V, see Figure 3.

Figure 3. EVM, SWITCH BOARD, USB Cable, PC, and Power Supply Setup

Optional Circuitry or Functions

Required Circuitry

10 11

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Hardware

SCPU036–October 2017

TIC12400 Evaluation Module

2.3 EVM Hardware Description

The TIC12400 EVM is designed to allow the user to easily evaluate switch detection using the GUI. The

break down of all the features and design of the EVM follow.

Figure 4. EVM Hardware Top Description

1. Connect the TIC12400EVM to a supply using VBAT (J9) as the positive terminal of the supply and

GND (J10) to the negative terminal of the supply using standard banana cables. The supply can range

from 4.5V to 35V, but is nominally at 12V.

2. Connect the TIC12400EVM to your computer via the mini-USB cable provided. The actual connector is

located on the bottom side of the board. This will allow your computer to interface with the EVM and

communicate to the device.

3. Connect the Switch Board or your own switches via a mating connector to J2, which connects the

switches to the INx pins of the device.

4. U11 is the TIC12400 devices.

5. The EVM has several LED use to help the user indicate the status of the EVM

6. The device has three post regulator decoupling caps: VCAP_D, VCAP_PRE, and VCAP_A. There are test points

at each output capacitor for each of these three regulators.

7. The EVM facilitates the use of an external microcontroller by interfacing with SPI, INT, and RESET

pins of the device.

8. There is an optional Translator/Level shifter (TXB0106) on the EVM to ensure the ability to interface

with the device's SPI, INT, and RESET functions at various voltages set by VDD pin. The MSP430 is a

3.3-V device and does not support 5-V logic level without the TXB0106.

9. The EVM has the ability to do relative temperature measurements of the air using the TI TMP0104AQ

21,6,7,11,12

TPIC

TPCONNECTOR

Hardware

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TIC12400 Evaluation Module

device.

10. There are place holders for a filter components on each channel of the EVM. There is a 100mil header

along the edge of the connector to measure signal at connector, and SMT test points to measure the

signal at the IC.

11. The filter capacitors at the pins of the device are not loaded by default and are there to allow the

design of filters if needed.

Figure 5. EVM Hardware Bottom Description

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Hardware

SCPU036–October 2017

TIC12400 Evaluation Module

1. The EVM has a blocking diode and large bulk capacitor. The blocking diode (D3) protects the EVM in

case the terminals of the battery are switched accidentally. The bulk capacitor (C24) adds a delay

between a battery disconnect and the device shutting down.

a. 2.1 There EVM has several jumpers for configuring the EVM in a variety of ways. J1: This jumper

connects the input of the 5V regulator to VS if inserted. (Default: Not Loaded)

b. 2.6 J6: This jumper connects a GPIO from the EVM micro (MSP430) to the output enable (OE) of

the TXB0106 level shifter by placing the jumper between pins 1 and 2. Placing the jumper between

pins 2 and 3 forces the translator to be on. If there is no jump on J7 then the pull down resistor

turns it off (OE=LOW) and places the level shifter in high impedance mode, preventing bus

contention between two possible masters on the SPI bus.

c. 2.7 J7: This jumper connects VDD pin of the device to either the onboard +3.3V supply generated

from the USB bus or connects to the onboard +5V regulator that is supplied from the battery.

Connecting pin 1 and 2 with a jumper connects VDD to +3.3V and connecting 2 and 3 with a

jumper connects VDD to +5V (this assumes J1 is also loaded). (Default: jumper across pin 1 and

d. 2.11 J11: This jumper connects VS pin of the device to the bulk capacitor after the protection

diode.

e. 2.12 J12: This jumper gives the option of having the pull up resistor come from either VDD or VS.

Connecting pin 1 and 2 with a jumper, references the INT pin to VS. Connecting pin 2 and 3 with a

jumper references the INT pin to VDD.

2. The EVM has the ability to do relative temperature measurements of the device's case temperature

using TI’s TMP0104AQ device.

3. The MSP430's support devices, such as JTAG interface, crystal, programming button, and so forth.

4. The MSP430 bridges the communication from the computer’s USB cable to the device's SPI, INT, and

RESET lines. The MSP430 also interfaces with several supports circuits for measuring temperature for

air and case, measuring current to VDD, and measuring current to VS. The MSP430 also has the

ability to control OE pin of TXB0106 to facilitate control of the device by an external microcontroller.

5. The TPS73533 receives power from the VBUS of the USB, which is 5 V. It then regulates that to the

+3.3V output on the TIC12400 EVM.

6. There are two INA226A Current Monitors for measuring current in VDD (U12) and for measuring th

current going into VS (U13). The MSP430 interfaces with these devices using I2C and relays the

information through the UBS cable to the GUI on the computer.

7. There are four status LED on the EVM that take up power when in use. The header (J4) facilitates

removing the LED’s in the circuit to do system level power measurements accurately.

8. The TPS7A6650Q is a high voltage regulator that is able to take high voltage and regulate it down to

5V for use with higher voltage micro controllers. When J1 is removed the regulator’s input voltage is

removed and therefore it is disabled.

23-1 23-2 23-3 23-4 23-5

SW23_A SW23_B IN23

5 4

SWITCH BOARD Hardware Description

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3 SWITCH BOARD Hardware Description

1. The SWITCH BOARD (SWB) is designed such that ground offsets can be tested by removing J6,

which disconnects the Chassis Ground (CGND) from the EVM ground (GND). A supply can be placed

between GND and CGND to create the offset. If not testing this feature, then J6 is by default in place

and therefore CGND and GND are shorted together.

2. VBAT provides the power to the battery connected switches. Switch 0 to 9 are battery connected

switches.

3. J114 connects all the switches from the SWB to the inputs of the EVM.

4. J1, J2, and J3 are jumpers that connect SW0 to SW23 to IN0 to IN23 of the EVM. These jumpers

allow the user to disconnect the SW’s on the Switch Board to the EVM and provide a 0.1" head to

connect their own switch of their choosing to the EVM.

5. SW23A and SW23B are provided to test the device's ability to detect multi-resistor coded ground

referenced switch transitions. SW23A relate directly to the mapped thresholds for 3A, 3B, and 3C.

SW23B relate directly to thresholds 8 and 9 of the device. Switch 23-1-5 are designed to coincide with

one state for each instance of one switch being in the “CLOSED” position. Channel 23 of the device

has the ability to set up to 5 thresholds, which means there are 6 states. Each switch represents one

state and all switches in the “OPEN” position represents the 6th state.

X-2

OPEN

X-1

X-2

OPEN

X-1

X-2

OPEN

X-1

X-1 X-2

SWX INX

OPEN

X-2

OPEN

X-1

X-2

OPEN

X-1

X-2

OPEN

X-1

X-1 X-2

SWX INX

OPEN

X-1 X-2 X-3

SWX IN_X

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SWITCH BOARD Hardware Description

SCPU036–October 2017

TIC12400 Evaluation Module

6. SW18 – SW22 are used to test up to 4 state resistor coded ground referenced switches. Each of the

channels have three ground connected switches labeled X-1, X-2, and X-3, which coincides with a

mapped threshold for 3A, 3B, and 3C. Each individual switch represents one of the three states and

the fourth state is when all switches are “OPEN”.

7. SW12 – SW17 are used when up to two thresholds (three states) is needed for the switch application.

Each of the channels have two ground connected switches labeled X-1 and X-2, which coincides with

a mapped threshold for 2A and 2B, and a switch position called “OPEN” to represent the third state.

8. SW10 and SW11 are used when up to two thresholds (three states) is needed for the switch

application. Each channel from 0 to 11, has one unique threshold mapping for each channel and one

common threshold (THRES_COM) that is shared for all the channels (0-11). These switches are setup

to illustrate this feature.

X-1

OPEN

X-2

OPENOPEN

SWX

X-1

X-2

OPEN

VBAT

IN_X

X-1

X-2

X-1

X-2

SWITCH BOARD Hardware Description

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9. SW0 to SW9 are designed to test the device ability to detect digital switches that are either referenced

to a battery connected switch or ground connected switch. There are two state, “OPEN” and either

chassis Ground Connected Switch (GCS) or Battery Connected Switch (BCS).

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