1 Introduction
The TPS23758EVM-080 allows reference circuitry evaluation of the TPS23758 device. It contains input and
output power connectors and an array of onboard test points for circuit evaluation.
1.1 Features
• IEEE802.3at Type 1 compliant PoE PD
• Class 0 5-V and 2.3-A primary side regulated CCM flyback
• Advanced startup
• Programmable slew rate and frequency dithering for EMI reduction
• Primary-side adapter priority control
1.2 Applications
• IP cameras
• Access points
• Point-of-sale
• Barcode readers
• IP phones
• Wireless LAN- wireless access points
2 Electrical Specifications
Table 2-1. TPS23758EVM-080 Electrical and Performance Specifications at 25°C
PARAMETER
TEST CONDITIONS
MIN
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
Falling input voltage
30
Detection voltage
At device terminals
2.7
10.1
V
Classification voltage
At device terminals
14.5
20.5
V
Classification Current
Class 0
0
4
mA
Inrush current-limit
140
mA
Operating current-limit
550
mA
DC-TO-DC CONVERTER
Output voltage
V
IN
= 48 V, I
LOAD
≤ I
LOAD
(max)
5
V
Output current
37 V ≤ V
IN
≤ 57 V
2.3
A
Output ripple voltage peak-to-peak
V
IN
= 48 V, I
LOAD
= 1 A
34
mV
Efficiency, end-to-end
V
IN
= 48 V, I
LOAD
= 230 mA
61
%
V
IN
= 48 V, I
LOAD
= 1.15 A
85
V
IN
= 48 V, I
LOAD
= 2.3 A
87
Switching frequency
250
kHz
Introduction
2
TPS23758EVM-080 Evaluation Module
SLVUBO2B – APRIL 2019 – REVISED DECEMBER 2020
Copyright © 2020 Texas Instruments Incorporated