Texas Instruments TPS23758EVM-080 User Manual

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User's Guide
TPS23758EVM-080 Evaluation Module
This user's guide describes the TPS23758 evaluation module (EVM). The TPS23758 evaluation module
(TPS23758EVM-080) contains evaluation and reference circuitry for the TPS23758 device. The TPS23758
device is an IEEE 802.3at Type 1 compliant, powered-device (PD) controller and power supply controller
optimized for primary side regulation flyback converter topologies. The TPS23758EVM-080 is targeted for a 5-V
synchronous-rectified high efficiency 13-W PD solution.
1 Introduction.............................................................................................................................................................................2
2 Electrical Specifications........................................................................................................................................................
3 Description..............................................................................................................................................................................
4 Schematic................................................................................................................................................................................4
5 General Configuration and
6 TPS23758EVM-080 Performance Data..................................................................................................................................
7 EVM Assembly Drawings and Layout Guidelines.............................................................................................................
8 Bill of Materials.....................................................................................................................................................................
9 Revision History...................................................................................................................................................................
Figure 4-1. TPS23758EVM-080
Figure 6-1. Startup Response When Connected to a PoE PSE (TPS23880).............................................................................
Figure 6-2. DCDC Startup...........................................................................................................................................................
Figure 6-3. Transient Response from 100 mA to 1 A for a 48-V
Figure 6-4. Efficiency of the TPS23758EVM-080........................................................................................................................
Figure 6-5. TPS23758EVM-080 Load Regulation.......................................................................................................................
Figure 6-6. DCDC Recovery from Output Short..........................................................................................................................
Figure 6-7. SRF = 0 Ω................................................................................................................................................................10
Figure 6-8. SRF = 100 Ω............................................................................................................................................................10
Figure 6-9. SRR = 0 Ω...............................................................................................................................................................
Figure 6-10. SRR = 10 Ω...........................................................................................................................................................
Figure 7-1. Top-Side Component
Figure 7-2. Layer 2 Routing.......................................................................................................................................................
Figure 7-3. Layer 3 Routing.......................................................................................................................................................
Figure 7-4. Bottom-Side Routing...............................................................................................................................................
Table 2-1. TPS23758EVM-080 Electrical and Performance Specifications at
Table 5-1. Connector Functionality..............................................................................................................................................
Table 5-2. Test Points..................................................................................................................................................................
Table 8-1. TPS23758EVM-080
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SLVUBO2B - APRIL 2019 - REVISED DECEMBER 2020
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ABSTRACT

Table of Contents

Description................................................................................................................................5
List of Figures
Schematic.................................................................................................................................4
Placement.............................................................................................................................12
List of Tables
BOM.........................................................................................................................................16
Copyright © 2020 Texas Instruments Incorporated
Input.........................................................................................7
25°C....................................................................2
TPS23758EVM-080 Evaluation Module
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