Datasheet

Introduction
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1 Introduction
The TPS2379EVM allows reference circuit evaluation of the TI TPS2379 PD controller. The TPS2379
features GATE output for controlling external MOSFETs for extended power applications. It also features a
100 V pass transistor, 140 mA inrush current limiting, type-2 indication, auto-retry fault protection, and an
open-drain power-good output.
1.1 Features
Gigabit Ethernet pass through interface
Switched output return for “ease of use” loading
GATE output to drive the external MOSFET
Extra detection and class signature selection for non-standard applications
IEEE 802.3at type-2 hardware classification with status flag (T2P) and LED
DC/DC converter enable (CDB)
Robust 100 V, 0.5 Ω internal hotswap MOSFET and 100 V, 64 mΩ external MOSFET
Operating power in excess of 60W with four-pair PSE
1.2 Applications
IEEE 802.3at-compliant devices
Video and VoIP telephones
Multiband access points
Security cameras
Pico-base stations
2 Electrical Specifications at 25°C
Table 1. TPS2379EVM Electrical and Performance Specifications
PARAMETER CONDITION MIN TYP MAX UNITS
POWER INTERFACE
Input Voltage Applied to the power pins of connectors J1 or J3 0 57 V
Operating Voltage After start up. 30 57 V
Rising input voltage at device terminals. 40
Input UVLO V
Falling input voltage. 30.5
Detection voltage At device terminals 1.4 10.1 V
Classification voltage At device terminals 11.9 23.0 V
J6 shunt removed 24.9
Detection signature kΩ
J6 shunt installed 12.5
J7 shunt removed 38 42
Classification current mA
J7 shunt installed 64 72
Inrush current-limit 100 180 mA
Internal MOSFET only (R13 removed) 850 1200
Operating current-limit mA
Internal plus external (R13 installed) 2260
Efficiency Four input pairs. Measured from J1 to J4 60W output power 97.5%
2
TPS2379 EVM User’s Guide SLVU687March 2012
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