Texas Instruments TPS23751 Evaluation Module TPS23751EVM-104 TPS23751EVM-104 데이터 시트
제품 코드
TPS23751EVM-104
T
PS
2
3
7
5
1
M1
R
C
S
D
VC1
GATE
R
T
N
V
C
CS
C
VC
CTL
5
8
V
0
.1
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F
R
D
EN
F
ro
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Et
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rn
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Pa
irs
1,2
V
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C
IN
F
ro
m
Et
h
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t
Pa
irs
3,4
CLS
DEN
RT
T2P
R
C
L
S
Type 2 PSE
Indicator
R
T
V
B
C
VB
R
F
BU
R
F
BL
TLV431
R
OB
C
IZ
V
OUT
PAD
V
D
D
SRD
M2
R
T2P
D
A
R
APD
2
R
APD1
Ad
a
p
te
r
R
SR
T
1
APD
R
SR
T
2
C
O
U
T
T1
C
IO
R
C
T
L
C
C
T
L
R
SR
D
R
VC
D
OUT
V
OUT
SRT
AR
T
N
OPTO2
OPTO2
OPTO1
OPTO1
OPTO3
OPTO3
V
B
SLVSB97C – JULY 2012 – REVISED JANUARY 2014
IEEE 802.3at PoE Interface with Wide Range High Efficiency DC-DC Controller
Check for Samples:
1
FEATURES
DESCRIPTION
The TPS23751 is a 16-pin integrated circuit that
2
•
IEEE 802.3at Classification with Status Flag
combines a Power-over-Ethernet (PoE) powered
•
High Efficiency Solutions over Wide Load
device (PD) interface and a current-mode DC-DC
Range
controller
optimized
specifically
for
applications
•
Powers up to 25.5 W PDs
requiring high efficiency over a wide load range.
•
Robust 100 V, 0.5
Ω Hotswap MOSFET
The PoE interface implements type-2 hardware
classification per IEEE 802.3at. It also includes an
classification per IEEE 802.3at. It also includes an
•
Synchronous Rectifier Disable Signal
auxiliary power detect (APD) input and a disable
•
PowerPAD™ TSSOP Packages
function (DEN). A 0.5
Ω, 100 V pass MOSFET
•
Complete PoE Interface Plus DC-DC Controller
minimizes heat dissipation and maximizes power
•
Adapter ORing Support
utilization.
•
Programmable Frequency
The DC-DC controller features internal soft-start, a
bootstrap
bootstrap
startup
current
source,
current-mode
•
TPS23752 Supports Ultra-Low Power Sleep
control
with
slope
compensation,
blanking,
and
Modes
current limiting. Efficiency is enhanced at light loads
•
–40°C to 125°C Junction Temperature Range
by disabling synchronous rectification and entering
variable frequency operation (VFO).
variable frequency operation (VFO).
APPLICATIONS
The TPS23752 is a 20-pin extended version of the
•
IEEE 802.3at-Compliant Devices
TPS23751 with the addition of a Sleep Mode feature.
•
Video and VoIP Telephones
Sleep Mode disables the converter to minimize power
consumption while still generating the Maintain Power
consumption while still generating the Maintain Power
•
Multiband Access Points
Signature (MPS) required by IEEE802.3at.
•
Security Cameras
•
Pico-Base Stations
Figure 1. Typical Application Circuit
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012–2014, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.