- 您现在的位置：买卖IC网 > PDF目录19987 > TPS23757PW (Texas Instruments)IC CTRLR POE PD IEEE 20TSSOP PDF资料下载
参数资料
| 型号： | TPS23757PW |
| 厂商： | Texas Instruments |
| 文件页数： | 1/39页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR POE PD IEEE 20TSSOP |
| 标准包装： | 70 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 是 |
| 电流限制： | 465mA |
| 电源电压： | 0 V ~ 57 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1012 (CN2011-ZH PDF) |
| 其它名称： | 296-24949-5 |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页
TPS23757
www.ti.com
SLVS948D – JULY 2009 – REVISED NOVEMBER 2013
High Efficiency PoE Interface and DC/DC Controller
1
FEATURES
The TPS23757 supports a number of input voltage
?
?
?
?
?
?
?
?
?
?
?
Powers up to 13 W (Input) PDs
Legacy and IEEE 802.3at Type 1 PDs
Optimized for Isolated DC/DC Converters
Supports High-Efficiency Topologies
Complete PoE Interface
Adapter ORing Support
Programmable Frequency with Synch.
Robust 100 V, 0.5 ? Hotswap MOSFET
Pin Compatible with TPS23754/6
–40°C to 125°C Junction Temperature Range
Industry Standard TSSOP-20
ORing options including highest voltage, external
adapter preference, and PoE preference.
The TPS23757 has an output flag indicating if an
external wall adapter is active when used in
conjunction with ORing controls. The detection
signature pin can also be used to force power from
the PoE source off. Classification can be
programmed to any of the defined types with a single
resistor.
The dc/dc controller features two complementary gate
drivers with programmable dead time. This simplifies
design of highly-efficient flyback topologies or active-
clamp forward or flyback converters. The second gate
driver may be disabled if desired for single MOSFET
APPLICATIONS
topologies. The controller also features internal
softstart, bootstrap startup source, current-mode
?
?
?
?
IEEE 802.3at Type 1 Compliant Devices
Video and VoIP Telephones
Access Points
Security Cameras
compensation, and a 78% maximum duty cycle. A
programmable and synchronizable oscillator allows
design optimization for efficiency and eases use of
the controller to upgrade existing power supply
designs. Accurate programmable blanking, with a
default period, simplifies the usual current- sense
DESCRIPTION
The TPS23757 is a combined Power over Ethernet
(PoE) powered device (PD) interface and current-
filter design trade-offs.
The TPS23757 has a 9 V converter startup,
permitting operation with 12 V wall adapters.
mode dc/dc controller optimized specifically for
isolated converters. The PoE interface supports the
IEEE 802.3at standard for a type 1 PD, which is
equivalent to the 13W standard of IEEE 802.3-2008.
T1
C IN
L OUT
V OUT
DEN
PPD
CLS
APb
V C
R APb
M1
V B
D VC1
R APb_OUT
V APb_OUT
Adapter
D A
V SS
APD
CTL
FRS
V B
GATE
CS
GAT2
M2
R OB
C IZ
Present and
Converter
Running
T2
R APD1
TLV431
Optional
Interface
C IO
Figure 1. High Efficiency Converter Using TPS23757
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright ? 2009–2013, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| R2S8-0509/P | CONV DC/DC 2W 5VIN 9VOUT SMD |
| 5650090-1 | AMP .050 CL CEC 56 DUAL POS |
| GRM188R71H471KA01D | CAP CER 470PF 50V 10% X7R 0603 |
| VE-J5V-CY-B1 | CONVERTER MOD DC/DC 5.8V 50W |
| ISL9021AIRUKZ-T7A | IC REG LDO 2.85V .25A 6UTDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| TPS2375D | 制造商:Texas Instruments 功能描述:POWER OVER ETHERNET ((NW)) |
| TPS2375DG4 | 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 |
| TPS2375DR | 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 |
发布紧急采购，3分钟左右您将得到回复。