Texas Instruments TPS62840-1YBGEVM56 User Manual Download Page 6 | Manualshive

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Board Layout

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Copyright © 2019, Texas Instruments Incorporated

TPS62840-1YBGEVM56 User's Guide

4

Board Layout

This section provides the TPS62840-1YBGEVM56 board layout and illustrations in

through

. The Gerbers are available on the EVM product page:

TPS62840-1YBGEVM56

Figure 4. Top Assembly

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Summary of Contents for TPS62840-1YBGEVM56

Page 1: ...ry low current consumption states such as wearables Internet of Things IoT connected devices and other portable end equipment Contents 1 Introduction 2 2 Setup 4 3 TPS62840 1YBGEVM56 Test Results 5 4 Board Layout 6 5 Schematic and Bill of Materials BOM 12 List of Figures 1 Loop Response Measurement Modification 3 2 TPS62840 Thermal Performance VIN 3 6 V VOUT 1 8 V IOUT 750 mA 5 3 Loop Response VIN...

Page 2: ...fication Summary SPECIFICATION MIN TYP MAX UNIT Input voltage 1 8 3 6 6 5 V Output voltage See Table 1 V Output current 0 See Table 1 mA 1 2 Modifications The printed circuit board PCB for this EVM uses the adjustable output voltage versions of this integrated circuit IC Additional input and output capacitors can also be added Finally the loop response of the IC can be measured 1 2 1 Adjusting the...

Page 3: ...e top layer This change is shown in Figure 1 Second install a 10 Ω resistor across the resistor pads on the back of the PCB at Rx2 The pads are spaced to allow installation of an 0603 sized resistor With these changes an ac signal 10 mV peak to peak amplitude recommended can be injected into the control loop across the added resistor Details of measuring the control loop of DCS Control devices are...

Page 4: ...Measure the input voltage at this point Jx1 Pin 5 and 6 GND Input return connection from the input supply for the EVM Jx2 Pin 1 and 2 VOUT Output voltage connection Jx2 Pin 3 and 4 S S Output voltage sense connections Measure the output voltage at this point Jx2 Pin 5 and 6 GND Output return connection JPx1 EN EN pin input jumper Place the supplied jumper across ON and EN to turn on the IC Place t...

Page 5: ...ts The TPS62840 1YBGEVM56 was used to take all the data in the 1 8V 6 5V 750mA 60nA IQ Step Down Converter data sheet See the device data sheet for the performance of this EVM The only difference is the inductor used This EVM was designed for the smallest solution size and uses a 0805 size inductor The data sheet inductor achieves higher efficiency but is a 0806 size and taller Figure 2 shows the ...

Page 6: ...ht 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide 4 Board Layout This section provides the TPS62840 1YBGEVM56 board layout and illustrations in Figure 4 through Figure 8 The Gerbers are available on the EVM product page TPS62840 1YBGEVM56 Figure 4 Top Assembly ...

Page 7: ...www ti com Board Layout 7 SLUUC17 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide Figure 5 Top Layer ...

Page 8: ...Board Layout www ti com 8 SLUUC17 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide Figure 6 Internal Layer 1 ...

Page 9: ...www ti com Board Layout 9 SLUUC17 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide Figure 7 Internal Layer 2 ...

Page 10: ...Board Layout www ti com 10 SLUUC17 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide Figure 8 Bottom Layer ...

Page 11: ... Layout 11 SLUUC17 May 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62840 1YBGEVM56 User s Guide Figure 9 TPS62840 1YBGEVM56 Angled View Figure 10 TPS62840 1YBGEVM56 Overhead View ...

Page 12: ... Incorporated TPS62840 1YBGEVM56 User s Guide 5 Schematic and Bill of Materials BOM This section provides the TPS62840 1YBGEVM56 schematic and bill of materials 5 1 Schematic Figure 11 illustrates the TPS62840 EVM schematic Figure 11 TPS62840 Schematic Figure 12 illustrates the TPS62841 EVM schematic Figure 12 TPS62841 Schematic ...

Page 13: ...al Composite 2 2 µH 1 5 A 127 mΩ SMD DFE201210S 2R2M P2 Murata R11 1 RES 0 Ω 1 0 05 W 0201 Std Std U11 1 1 8V to 6 5V 750mA 60nA IQ Step Down Converter in WCSP Package TPS62840YBG Texas Instruments Table 4 lists the TPS62841 EVM BOM Table 4 TPS62841 Bill of Materials REF DES QTY DESCRIPTION PART NUMBER MANUFACTURER C21 1 CAP CERM 4 7 µF 10 V 20 X5R 0402 GRM155R61A475MEAAD Murata C22 1 CAP CERM 10 ...

Page 14: ...other than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Page 15: ... These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation...

Page 16: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Page 17: ... any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Page 18: ...OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Page 19: ...se resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for...

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