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Figure 3-6. Bottom Assembly

Board Layout

12

TPS54225 Step-Down Converter Evaluation Module User's Guide

SLVU337A – NOVEMBER 2009 – REVISED OCTOBER 2021

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Copyright © 2021 Texas Instruments Incorporated

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Summary of Contents for TPS54225

Page 1: ...tion 5 Figure 2 4 TPS54225EVM 538 Load Transient Response 6 Figure 2 5 TPS54225EVM 538 Output Voltage Ripple 6 Figure 2 6 TPS54225EVM 538 Input Voltage Ripple 7 Figure 2 7 TPS54225EVM 538 Start Up 7 F...

Page 2: ...roviding 1 05 V at 2 A from 5 V to 17 V input This user s guide describes the TPS54225EVM 538 performance Table 1 1 Input Voltage and Output Current Summary EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANG...

Page 3: ...tion modules and the following Efficiency Output load regulation Output line regulation Load transient response Output voltage ripple Input voltage ripple Start up Switching frequency 2 1 Input Output...

Page 4: ...ke sure the jumper at JP1 Enable control is set from EN to OFF 2 Apply appropriate VIN voltage to VIN and PGND terminals at J1 3 Move the jumper at JP1 Enable control to cover EN and ON The EVM will e...

Page 5: ...5 Line Regulation The line regulation for the TPS54225EVM 538 is shown Figure 2 3 1 04 1 045 1 05 1 055 1 06 4 8 12 16 20 V Input Voltage V I V Output Voltage V O I 2 A O I 1 A O I 0 001 A O Figure 2...

Page 6: ...8 Load Transient Response 2 7 Output Voltage Ripple The TPS54225EVM 538 output voltage ripple is shown in Figure 2 5 The output current is the rated full load of 2A V 20 mV div AC coupled O Switching...

Page 7: ...PS54225EVM 538 Input Voltage Ripple 2 9 Start Up The TPS54225EVM 538 start up waveform is shown in Figure 2 7 Time 500 div ms PG 5 V div V 500 mV div O EN 10 V div Figure 2 7 TPS54225EVM 538 Start Up...

Page 8: ...Voltage V I f Switching Frequency kHz sw V 1 8 V O V 3 3 V O I 1 A O Figure 2 8 TPS54225EVM 538 Switching Frequency Test Setup and Results www ti com 8 TPS54225 Step Down Converter Evaluation Module...

Page 9: ...t connects VIN to VCC and R4 the power good pull up are located on the back side Analog ground and power ground are connected at a single point on the top layer near pin 5 of the TPS54225 The internal...

Page 10: ...re 3 3 Internal Layer 1 Board Layout www ti com 10 TPS54225 Step Down Converter Evaluation Module User s Guide SLVU337A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas...

Page 11: ...Figure 3 5 Bottom Layer www ti com Board Layout SLVU337A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback TPS54225 Step Down Converter Evaluation Module User s Guide 11 Copyright 2021 Texa...

Page 12: ...tom Assembly Board Layout www ti com 12 TPS54225 Step Down Converter Evaluation Module User s Guide SLVU337A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instrument...

Page 13: ...sistor Chip 1 16W 1 0603 Std Std R2 1 22 1 k Resistor Chip 1 16W 1 0603 Std Std R3 1 0 Resistor Chip 1 16W 1 0603 Std Std R4 1 100 k Resistor Chip 1 16W 1 0603 Std Std R5 0 Open Resistor Chip 1 16W 1...

Page 14: ...guide title 2 Revision History www ti com 14 TPS54225 Step Down Converter Evaluation Module User s Guide SLVU337A NOVEMBER 2009 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instr...

Page 15: ...ther 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 tec...

Page 16: ...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 in...

Page 17: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 18: ...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 electr...

Page 19: ...R 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 Furthe...

Page 20: ...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 thes...

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