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Hardware, Software, Testing Requirement and Test Result

9

TIDA032 – October 2019

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Copyright © 2019, Texas Instruments Incorporated

24-Port (2 pair) Power Sourcing Equipment Reference Design for Multi-port

Applications

3.2

Testing and Results

3.2.1

Test Setup

3.2.1.1

Hardware Setup

shows the hardware test setup of the ecosystem.

Figure 2. Ecosystem Setup

NOTE:

A 30-pin ribbon cable is required to enable the full features of PSE system firmware GUI.

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Содержание TIDA-050026-23882

Страница 1: ...a mother board PSEMTHR24EVM 081 an MSP430 daughter card PSEMCUDAUEVM 082 and a PSE daughter card TPS23882EVM 084 To evaluate the system both hardware and software USB2ANY and MSP FET adapters are als...

Страница 2: ...30 W is considered as nonstandard power Compliance IEEE 802 3bt Type 3 PD class level supported Class 0 to class 4 Number of power supply supported 1 2 In sharing mode and redundant mode Max port num...

Страница 3: ...gn Considerations 2 2 1 Input Power 2 2 1 1 Vpwr DC input voltage is provided through J1 and J3 This board supports a dual power source in sharing mode and redundant mode If the power supplies are in...

Страница 4: ...I2 C to PSEs 30 P4 1 I2 C SDA USCI_B1 I2 C to host 31 P4 2 I2 C SCL USCI_B1 I2 C to host 33 P4 4 UART TX USCI_A1 UART to host debug only 34 P4 5 UART RX USCI_A1 UART to host debug only 21 P2 7 SPI CL...

Страница 5: ...he TPS23882 is an 8 channel power sourcing equipment PSE controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802 3bt standard The PSE controller can detect powered d...

Страница 6: ...e used to put the respective outputs in high impedance for multi master driving applications and to reduce power consumption The ISO7740 device has all four channels in the same direction the ISO7741...

Страница 7: ...nce line undervoltage lockout cycle by cycle current limit slope compensation softstart oscillator synchronization capability and thermal shutdown 2 3 8 LM5050 The LM5050 device is used to support 2 p...

Страница 8: ...ltage supervisor with low quiescent current that monitors system voltages as low as 1 15 V asserting an open drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual...

Страница 9: ...uments Incorporated 24 Port 2 pair Power Sourcing Equipment Reference Design for Multi port Applications 3 2 Testing and Results 3 2 1 Test Setup 3 2 1 1 Hardware Setup Figure 2 shows the hardware tes...

Страница 10: ...DC VPWR TP2 GND VPWR ground TP3 OC ALERT System over current alert signal TP4 SDA I2 C data TP5 SCL I2 C clock TP6 PG1 Power good signal for power supply 1 TP7 PG2 Power good signal for power supply 2...

Страница 11: ...output connectors Table 7 EVM Input and Output Connectors CONNECTOR DESCRIPTION PSEMTHR24EVM 081 J1 J3 DC power supply input 44 57 V VDC 41 A J2 J4 J6 J7 Edge connector for DC bus when connecting 2 b...

Страница 12: ...084 to configure the system generate the code image and flash to MSP430 device Download the PSE system firmware GUI from TIDA 050026 23882 folder or PSEMCUDAUEVM 082 tool folder 3 2 1 3 2 PSE System F...

Страница 13: ...System bootup setting 1 Turn on the PSE port as soon as the power is up 2 Turn on the PSE port after the PoE enable command is sent from the host Port overload retry mode 1 Re enable immediately afte...

Страница 14: ...n Power policy static and dynamic mode 1 Static mode in static mode the port power allocation is set to port power limit In class limit mode port power allocation is class level power of the PD and in...

Страница 15: ...and there s no more low priority ports to be turned on and the guard band LED will turn on Device configuration is mainly used to configure the mapping between the PSE device channels and the logical...

Страница 16: ...GUI Port Configuration When everything has been configured click the Proceed button The summary page displays all of the configurations being set compared to the factory default configurations When ev...

Страница 17: ...Design for Multi port Applications Figure 9 GUI Program Device and Generate Hex When the code is successfully flashed to the MSP430 the system will be up and running MSP FET can be disconnected from...

Страница 18: ...he status page shows the system device and port real time status The user can also change the system configuration in the configuration page each change is converted to a host command to the MSP430 MC...

Страница 19: ...ated 24 Port 2 pair Power Sourcing Equipment Reference Design for Multi port Applications Figure 12 BSL Firmware Update Page Before using BSL page to update the MSP430 firmware BSL code needs to be fl...

Страница 20: ...er 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated 24 Port 2 pair Power Sourcing Equipment Reference Design for Multi port Applications Figure 13 MCU Device Selection...

Страница 21: ...ated 24 Port 2 pair Power Sourcing Equipment Reference Design for Multi port Applications Load BSL code and flash to MSP430 Figure 15 Select and Load Images Page In the debug page user s can read and...

Страница 22: ...23882 4 2 Bill of Materials To download the bill of materials BOM see the design files at TIDA 050026 23882 4 3 PCB Layout Recommendations KSENSA is shared between SEN1 and SEN2 KSENSB is shared betw...

Страница 23: ...ly Drawings To download the assembly drawings see the design files at TIDA 050026 23882 5 Software Files To download the software files see the design files at TIDA 050026 23882 6 Related Documentatio...

Страница 24: ...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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