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Texas Instruments TPS54A20 User Manual Download Page 15

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Board Layout

15

SLVUAM8A – December 2015 – Revised March 2019

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Copyright © 2015–2019, Texas Instruments Incorporated

TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation module

Figure 18. TPS54A20EVM-770 Internal Layer-1 Layout

Figure 19. TPS54A20EVM-770 Internal Layer-2 Layout

Figure 20. TPS54A20EVM-770 Bottom-Side Layout

Summary of Contents for TPS54A20

Page 1: ...5 TPS54A20EVM 770 Transient Response 8 6 TPS54A20EVM 770 Loop Response 8 7 TPS54A20EVM 770 Output Ripple 0 A Load 9 8 TPS54A20EVM 770 Output Ripple 5 A Load 9 9 TPS54A20EVM 770 Output Ripple 10 A Loa...

Page 2: ...e safety procedures applicable to your laboratory Caution Do not leave the EVM powered when unattended WARNING The circuit module has signal traces components and component leads on the bottom of the...

Page 3: ...tart and undervoltage lockout inputs The absolute maximum input voltage is 15 V while switching and 17 V for non switching conditions Table 1 Input Voltage and Output Current Summary EVM INPUT VOLTAGE...

Page 4: ...h the TON pin is not close to the on time when the PLL is engaged the SYNC range of the device may be reduced The TON resistor can also be adjusted to tune the controller Lowering the RTON value will...

Page 5: ...r efficiency an external 5V supply is recommended to be connected to the VG pin J3 2 to GND J3 1 J4 VOUT 1 2 V at 10 A maximum TP1 VIN test point TP2 GND test point at VIN connector TP3 PGOOD test poi...

Page 6: ...ule 2 2 Efficiency The efficiency of this EVM peaks at a load current of about 5 A and then decreases as the load current increases toward full load Figure 1 shows the efficiency for the TPS54A20EVM 7...

Page 7: ...2019 Submit Documentation Feedback Copyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT regulator evaluation module 2 3 Output Voltage Load Regulation Figure 3 shows the load...

Page 8: ...module 2 5 Load Transients Figure 5 shows the TPS54A20EVM 770 response to load transients The current step is from 0 A to 9 A The current step slew rate is 9 A s Total peak to peak voltage variation i...

Page 9: ...ation Feedback Copyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT regulator evaluation module 2 7 Output Voltage Ripple Figure 7 Figure 8 and Figure 9 show the TPS54A20EVM 7...

Page 10: ...tion Feedback Copyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT regulator evaluation module Figure 9 TPS54A20EVM 770 Output Ripple 10 A Load 2 8 Input Voltage Ripple Figure...

Page 11: ...WB 5 V div www ti com Test Setup and Results 11 SLVUAM8A December 2015 Revised March 2019 Submit Documentation Feedback Copyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT re...

Page 12: ...Figure 13 the output voltage ramps up as soon as the input voltage reaches the UVLO threshold as set by the R2 and R3 resistor divider network In Figure 14 the input voltage is initially applied and t...

Page 13: ...opyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT regulator evaluation module 2 10 Thermal Image The EVM thermal image is shown in Figure 15 The input voltage is 12 V and th...

Page 14: ...bottom layer is another ground plane with an additional trace for the output voltage feedback The top side ground traces are connected to the bottom and internal ground planes with multiple vias plac...

Page 15: ...Documentation Feedback Copyright 2015 2019 Texas Instruments Incorporated TPS54A20EVM 770 10 A SWIFT regulator evaluation module Figure 18 TPS54A20EVM 770 Internal Layer 1 Layout Figure 19 TPS54A20EV...

Page 16: ...k R9 47uF 10V C9 47uF 10V C10 TPS54A20RNJR VIN 3 PGOOD 15 SYNC 14 SS FSEL 6 EN 4 ILIM 5 VGA 7 TON 19 VG 16 VG 17 AGND 1 PGND 2 FB 18 SWB 12 BOOTB 10 SWA 13 SCAP 20 SCAP 9 BOOTA 8 NC 11 U1 SCAP PGND AG...

Page 17: ...0nH Inductor 220 nH 7 2 A 0 0075 ohm SMD 3 2x2 5mm MLA FY12NR22N M3 RU Mag Layers Q1 1 30V MOSFET N CH 30 V 65 A DQJ0008A VSONP 8 DQJ0008A CSD17527Q5A Texas Instruments R2 1 80 6k RES 80 6 k 1 0 1 W 0...

Page 18: ...facturer TP9 1 Test Point Multipurpose White TH White Multipurpose Testpoint 5012 Keystone U1 1 Small 10MHz 10A 8V to 14V Input SWIFT Series Capacitor Step Down Converter RNJ0020A VQFN HR 20 RNJ0020A...

Page 19: ...Instruments Incorporated Revision History Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current version Changes from Original December 2015 to A Revisio...

Page 20: ...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 21: ...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 22: ...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 23: ...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 24: ...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 25: ...e 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 reprod...

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