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Introduction

SPRUI96 – October 2016

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TPS3813xxxQ1EVM for Processor Voltage Supervisor With Window-

Watchdog User’s Guide

1.3.3

Layout and Component Placement

Figure 3

is the top assembly of the printed circuit board (PCB), which shows the component placement on

the EVM.

Figure 4

is the Layout Top View and

Figure 5

is the Layout Bottom View,

Figure 6

and

Figure 7

show the top and bottom layers, and

Figure 8

shows the top solder mask of the EVM.

Figure 3. Composite - Top View

Figure 4. Layout Top View

Figure 5. Layout Bottom View

Figure 6. Top Layer

Figure 7. Bottom Layer

Figure 8. Top Solder Mask

Summary of Contents for TPS3809

Page 1: ...s Contents 1 Introduction 2 2 Setup and Operation 6 3 EVM Setup 7 List of Figures 1 TPS3813xxxQ1EVM Board 2 2 TPS3813xxxQ1EVM Schematic 3 3 Composite Top View 5 4 Layout Top View 5 5 Layout Bottom View 5 6 Top Layer 5 7 Bottom Layer 5 8 Top Solder Mask 5 9 Delay Time TPS3813K33 Q1 8 10 Delay Time TPS3813I50 Q1 8 11 Rise Time TPS3813K33 Q1 8 12 Rise Time TPS3813I50 Q1 8 13 Fall Time TPS3813K33 Q1 9...

Page 2: ... a common ground connection Provided test points give users access to multiple ground points and all critical node voltages The top side of the EVM board accepts two voltage supervisors in a SOT23 6 package These devices have an input for supply voltage VDD a watchdog rising edge input and a reset output to monitor that VDD does not drop below the threshold voltage VIT and monitor the watchdog tim...

Page 3: ...k Copyright 2016 Texas Instruments Incorporated TPS3813xxxQ1EVM for Processor Voltage Supervisor With Window Watchdog User s Guide 1 3 1 EVM Schematic Figure 2 TPS3813xxxQ1EVM Schematic 1 3 2 EVM Bill of Materials Table 1 lists the bill of materials BOM for the TPS3813xxxQ1EVM ...

Page 4: ...Gold R A SMT Header 2 54 mm 2 x1 R A SMT 87898 0204 Molex J2 J3 J6 J7 4 Header 100 mil 3x1 Gold SMT Samtec_TSM 103 01 X SV TSM 103 01 L SV Samtec R1 R2 2 100k RES 100 k 1 0 1 W 0603 0603 CRCW0603100KFKE A Vishay Dale SH J1 SH J2 SH J5 SH J6 4 1x2 Shunt 100mil Flash Gold Black Closed Top 100mil Shunt SPC02SYAN Sullins Connector Solutions TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP14 ...

Page 5: ...acement Figure 3 is the top assembly of the printed circuit board PCB which shows the component placement on the EVM Figure 4 is the Layout Top View and Figure 5 is the Layout Bottom View Figure 6 and Figure 7 show the top and bottom layers and Figure 8 shows the top solder mask of the EVM Figure 3 Composite Top View Figure 4 Layout Top View Figure 5 Layout Bottom View Figure 6 Top Layer Figure 7 ...

Page 6: ...ice Test Point Silkscreen Label Function Description TP1 TPS3813K33 VDD Voltage Input Supply Voltage Voltage Supervisor Input TP2 TPS3813K33 VDD1 Voltage Monitoring Probing Voltage Probe Point for TPW3813 TP3 TPS3813K33 RESETN Voltage Monitoring Probing Active Low Reset Output TP4 TPS3813K33 GND Voltage Input Supply Ground Connection TP5 TPS3813K33 WDR1 Voltage Monitoring Probing Watchdog Ratio In...

Page 7: ... pin to supply voltage VDD J4 TPS3813K33 On Pulls the WDT pin low lowest lower window boundary and window J5 TPS3813I50 On Pulls RESET pin to supply voltage VDD J8 TPS3813I50 On Pulls the WDT pin low lowest lower window boundary and window J2 TPS3813K33 GND Pulls the WDR pin low smaller lower window boundary and window VDD Pulls the WDR pin high larger lower window boundary and window J3 TPS3813K3...

Page 8: ...et The delay time td 25 ms typical begins after the VDD1 voltage rises above the threshold voltage VIT as specified in the TPS3813 Q1 datasheet To perform this test the user must set the jumpers according to Jumper Settings Table 5 A stable 5 V DC supply must also be readily available Table 5 Jumper Settings Jumper Setting J1 to J5 VDD1 J2 to J6 VDD1 J3 to J7 VDD1 J4 to J8 OFF The jumper settings ...

Page 9: ...atchdog Timer The TPS3813 Q1EVM allows users to program the watchdog window using the WDT and WDR pins with several different configurations to set the window timeout and ratio which are explained in the Implemented Window Watchdog Settings section of the TPS3813Q1 datasheet On board the EVM the WDT pin can be connected to ground through the C2 capacitor using the J4 and J6 jumpers to set the uppe...

Page 10: ...a 3300 pF capacitor The former results in a watchdog window with limits of tboundary max 35 ms and twindow min 895 3 ms Once the window has been configured the watchdog timer should re trigger to use the Watchdog Timer Input WDI pin with an external signal that fits within the watchdog window to avoid a timeout and RESETN pin is asserted Care must be taken to avoid a boundary violation which resul...

Page 11: ... are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warranted for the remainder of the original warranty period Replaced EVMs shall be warranted for a new full ninety 90 day wa...

Page 12: ... by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la rég...

Page 13: ...connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the inputs and outputs kept within the specified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors cur...

Page 14: ...F REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED 8 2 Specific Limitations IN NO EVENT SHALL T...

Page 15: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

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