Texas Instruments TPS23758EVM-080 User Manual Download | Manualshive

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4 Schematic

Figure 4-1. TPS23758EVM-080 Schematic

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TPS23758EVM-080 Evaluation Module

SLVUBO2B – APRIL 2019 – REVISED DECEMBER 2020

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Copyright © 2020 Texas Instruments Incorporated

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Summary of Contents for TPS23758EVM-080

Page 1: ...s Figure 4 1 TPS23758EVM 080 Schematic 4 Figure 6 1 Startup Response When Connected to a PoE PSE TPS23880 6 Figure 6 2 DCDC Startup 6 Figure 6 3 Transient Response from 100 mA to 1 A for a 48 V Input...

Page 2: ...IN TYP MAX UNIT POWER INTERFACE Input voltage Applied to the power pins of connectors J1 37 57 V Applied to the power pins of connectors J4 48 V Input UVLO POE input J1 Rising input voltage 36 V Falli...

Page 3: ...from a DC source when power at J1 is not present The TPS23758 U1 PD and DC to DC converter circuitry is shown in Figure 4 1 R17 provides the detection signature The switched side of the PD controller...

Page 4: ...ic Figure 4 1 TPS23758EVM 080 Schematic Schematic www ti com 4 TPS23758EVM 080 Evaluation Module SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback Copyright 2020 Texas Instruments Inc...

Page 5: ...o visually indicate the output voltage J6 FREQ Jump to Fixed for fixed frequency Jump to Dither to enable spread spectrum dithering Table 5 2 Test Points Test Point Label Description TP1 BS Bob Smith...

Page 6: ...e of the TPS23758EVM 080 Figure 6 1 Startup Response When Connected to a PoE PSE TPS23880 Figure 6 2 DCDC Startup TPS23758EVM 080 Performance Data www ti com 6 TPS23758EVM 080 Evaluation Module SLVUBO...

Page 7: ...S23758EVM 080 Figure 6 3 Transient Response from 100 mA to 1 A for a 48 V Input www ti com TPS23758EVM 080 Performance Data SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback TPS23758E...

Page 8: ...TPS23758EVM 080 Figure 6 4 Efficiency of the TPS23758EVM 080 TPS23758EVM 080 Performance Data www ti com 8 TPS23758EVM 080 Evaluation Module SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document F...

Page 9: ...5 Recovery from VOUT Short Figure 6 6 DCDC Recovery from Output Short www ti com TPS23758EVM 080 Performance Data SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback TPS23758EVM 080 Ev...

Page 10: ...re 6 7 SRF 0 Figure 6 8 SRF 100 TPS23758EVM 080 Performance Data www ti com 10 TPS23758EVM 080 Evaluation Module SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback Copyright 2020 Texas...

Page 11: ...0 Figure 6 10 SRR 10 www ti com TPS23758EVM 080 Performance Data SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback TPS23758EVM 080 Evaluation Module 11 Copyright 2020 Texas Instrument...

Page 12: ...ement and layout of the TPS23758EVM 080 Figure 7 1 Top Side Component Placement Figure 7 2 Layer 2 Routing EVM Assembly Drawings and Layout Guidelines www ti com 12 TPS23758EVM 080 Evaluation Module S...

Page 13: ...re 7 4 Bottom Side Routing www ti com EVM Assembly Drawings and Layout Guidelines SLVUBO2B APRIL 2019 REVISED DECEMBER 2020 Submit Document Feedback TPS23758EVM 080 Evaluation Module 13 Copyright 2020...

Page 14: ...en the 48 V input voltage rails and between the input and an isolated converter output Use large copper fills and traces on SMT power dissipating devices and use wide traces or overlay copper fills in...

Page 15: ...CB creating a phantom or literal earth ground Use LC filter at DC to DC input Dampen high frequency ringing on all switching nodes if present allow for possible snubbers Control rise times with gate d...

Page 16: ...P AL 22 uF 100 V 20 1 3 ohm AEC Q200 Grade 2 SMD SMT Radial F EEE FK2A220P Panasonic C9 C12 C21 C23 4 0 1 uF CAP CERM 0 1 uF 100 V 10 X7R 0805 0805 C2012X7R2A104 K125AA TDK C10 C11 2 2 2 uF CAP CERM 2...

Page 17: ...1 0603 0603 CGA3E2X7R1E1 04K080AA TDK D1 D2 D10 3 100 V Diode Switching 100 V 0 2 A SOD 123 SOD 123 MMSD4148T1G ON Semiconductor D3 D4 2 12 V Diode Zener 12 V 500 mW SOD 123 SOD 123 MMSZ5242B 7 F Diod...

Page 18: ...ohm Ferrite Bead 100 ohm 100 MHz 1 A 0603 0603 MPZ1608D101B TD25 TDK Q1 1 30 V MOSFET N CH 30 V 20 A DNH0008A VSONP 8 DNH0008A CSD17579Q3A Texas Instruments None R1 R2 R3 R6 4 75 0 RES 75 0 1 0 1 W 0...

Page 19: ...402 CRCW0402200K FKED Vishay Dale R23 1 237 k RES 237 k 1 0 063 W AEC Q200 Grade 0 0402 0402 CRCW0402237K FKED Vishay Dale R24 1 36 5 k RES 36 5 k 1 0 063 W AEC Q200 Grade 0 0402 0402 CRCW040236K5 FKE...

Page 20: ...12 4 Test Point Miniature Black TH Black Miniature Testpoint 5001 Keystone TP9 TP13 2 Test Point Miniature Orange TH Orange Miniature Testpoint 5003 Keystone TP11 1 Test Point Miniature White TH White...

Page 21: ...Revision B December 2020 Page Updated the numbering format for tables figures and cross references throughout the document 2 Updated Schematic 4 Updated Bill of Materials 16 www ti com Revision Histor...

Page 22: ...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 23: ...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 24: ...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 25: ...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 26: ...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 27: ...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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