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参数资料
| 型号： | TPS23756PWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.1 A SWITCHING CONTROLLER, 278 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 1/41页 |
| 文件大小： | 1405K |
| 代理商： | TPS23756PWP |
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M1
R
C
S
C
OUT
D
VC1
GATE
A
R
T
N
V
C
CS
C
V
C
CTL
V
B
D
1
C
1
R
D
E
N
F
ro
m
E
th
e
rn
e
t
P
a
ir
s
1
,2
V
SS
C
IN
R
CTL
C
CTL
F
ro
m
E
th
e
rn
e
t
P
a
ir
s
3
,4
CLS
DEN
FRS
T2P
R
C
L
S
R
T2P-OUT
Type2PSE
Indicator
R
F
R
S
V
B
C
V
B
R
F
B
U
R
F
B
L
TLV431
R
OB
C
IZ
V
OUT
PAD
V
D
1
GAT2
M2
D
CL
C
CL
C
M4
M3
R
T2P
D
A
R
A
P
D
2
R
APD1
N/CORPPD
A
d
a
p
te
r
D
T
R
B
L
N
K
APD
R
DT
B
L
N
K
V
D
R
T
N
C
O
M
L
OUT
L
VC
T1
C
IO
D
VC2
Optional
Interface
V
T2P-OUT
TPS23754
TPS23754-1
TPS23756
www.ti.com
SLVS885D – OCTOBER 2008 – REVISED DECEMBER 2009
High Power/High Efficiency PoE Interface and DC/DC Controller
1
FEATURES
The TPS23754/6 supports a number of input voltage
2
Powers up to 30 W (input) PDs
ORing options including highest voltage, external
DC/DC Control Optimized for Isolated
adapter preference, and PoE preference. These
Converters
features allow the designer to determine which power
Supports High-efficiency Topologies
source will carry the load under all conditions.
Complete PoE Interface
The
PoE
interface
features
the
new
extended
Enhanced Classification per IEEE 802.3at with
hardware classification necessary for compatibility
Status Flag
with high-power midspan power sourcing equipment
(PSE) per IEEE 802.3at. The detection signature pin
Adapter ORing Support
can also be used to force power from the PoE source
Programmable Frequency with
off. Classification can be programmed to any of the
Synchronization
defined types with a single resistor.
Robust 100 V, 0.5
Hotswap MOSFET
The dc/dc controller features two complementary gate
–40°C to 125°C Junction Temperature Range
drivers with programmable dead time. This simplifies
design
of
active-clamp
forward
converters
or
Industry Standard PowerPAD TSSOP-20
optimized
gate
drive
for
highly-efficient
flyback
topologies. The second gate driver may be disabled if
APPLICATIONS
desired for single MOSFET topologies. The controller
IEEE 802.3at Compliant Devices
also features internal softstart, bootstrap startup
Video and VoIP Telephones
source, current-mode compensation, and a 78%
RFID Readers
maximum
duty
cycle.
A
programmable
and
synchronizable oscillator allows design optimization
Multiband Access Points
for efficiency and eases use of the controller to
Security Cameras
upgrade existing power supply designs. Accurate
programmable
blanking,
with
a
default
period,
DESCRIPTION
simplifies
the
usual
current-sense
filter
design
trade-offs.
The TPS23754/6 is a combined Power over Ethernet
(PoE)
powered
device
(PD)
interface
and
The TPS23754 has a 15 V converter startup while the
current-mode dc/dc controller optimized specifically
TPS23756
has
a
9
V
converter
startup.
The
for isolated converters. The PoE interface supports
TPS23754-1 replaces the PPD pin with a no-connect
the IEEE 802.3at standard.
for increased pin spacing.
Figure 1. High Efficiency Converter Using TPS23754
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.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2008–2009, 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.
相关PDF资料 |
PDF描述 |
|---|---|
| TPS23754PWP | 1.1 A SWITCHING CONTROLLER, 278 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS2375PWG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2376PWR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2375DRG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2375DG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS23756PWPR | 功能描述:热插拔功率分布 Hi Pwr Eff PoE Inter face & DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS23757EVM | 功能描述:电源管理IC开发工具 TPS23757 Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS23757PW | 功能描述:热插拔功率分布 Hi Eff PoE Inter & DC/DC Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS23757PWR | 功能描述:热插拔功率分布 Hi Eff PoE Interface & DC/DC Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2375D | 功能描述:热插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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