Texas Instruments 3.3Vout, 10W, IEEE 802.3-2005 Compliant PD Controller, PS Controller Evaluation Module for TPS23753A T TPS23753AEVM-004 数据表
产品代码
TPS23753AEVM-004
T
P
S
2
3
7
5
3
M1
R
C
S
C
OUT
D
VC
GATE
R
T
N
V
C
CS
C
V
C
CTL
V
B
D
1
5
8
V
C
1
0
.1
µ
F
R
D
E
N
R
C
L
S
F
ro
m
E
th
e
rn
e
t
T
ra
n
s
fo
rm
e
rs
V
D
D
1
V
SS
CLS
C
IN
V
OUT
R
CTL
C
CTL
F
ro
m
S
p
a
re
P
a
ir
s
o
r
T
ra
n
s
fo
rm
e
rs
D
S
DEN
B
L
N
K
FRS
D
A
R
F
R
S
V
B
C
V
B
Adapter
R
FBU
R
FBL
TLV431
R
OB
C
IZ
APD
R
A
P
D
2
R
APD1
R
B
L
N
K
V
D
D
C
IO
T1
BR1
BR2
R
VC
* Adapter interface and R
BLNK
are Optional
*
*
TPS23753A
www.ti.com
SLVS933B – JULY 2009 – REVISED JANUARY 2010
IEEE 802.3 PoE INTERFACE AND CONVERTER CONTROLLER WITH ENHANCED ESD
IMMUNITY
1
FEATURES
DESCRIPTION
•
Enhanced ESD Ride-Through Capability
•
Optimized for Isolated Converters
The TPS23753A is a combined Power over Ethernet
(PoE)
(PoE)
powered
device
(PD)
interface
and
•
Complete PoE Interface
current-mode dc/dc controller optimized specifically
•
Adapter ORing Support
for
isolated
converter
designs.
The
PoE
•
12 V Adapter Support
implementation supports the IEEE 802.3at standard
as a 13 W type 1 PD. The requirements for an IEEE
as a 13 W type 1 PD. The requirements for an IEEE
•
Programmable Frequency with Synch.
802.3at type 1 device are a superset of IEEE
•
Robust 100 V, 0.7
Ω
Hotswap MOSFET
802.3-2008 (originally IEEE 802.3af).
•
Small TSSOP 14 Package
The TPS23753A supports a number of input-voltage
•
15 kV / 8 kV System Level ESD Capable
ORing options including highest voltage, external
•
–40°C to 125°C Junction Temperature Range
adapter preference, and PoE preference.
•
Design Procedure Application Note -
The PoE interface features an external detection
•
Adapter ORing Application Note -
signature pin that can also be used to disable the
internal hotswap MOSFET. This allows the PoE
function to be turned off. Classification can be
internal hotswap MOSFET. This allows the PoE
function to be turned off. Classification can be
APPLICATIONS
programmed to any of the defined types with a single
•
IEEE 802.3at Compliant Powered Devices
resistor.
•
VoIP Telephones
The dc/dc controller features a bootstrap startup
•
Access Points
mechanism with an internal, switched current source.
•
Security Cameras
This provides the advantages of cycling overload fault
protection without the constant power loss of a pull up
resistor.
protection without the constant power loss of a pull up
resistor.
The programmable oscillator may be synchronized to
a higher-frequency external timing reference. The
TPS23753A features improvements for uninterrupted
device operation through an ESD event.
a higher-frequency external timing reference. The
TPS23753A features improvements for uninterrupted
device operation through an ESD event.
Figure 1. Basic TPS23753A Implementation
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.
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2010, 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.