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TPS23757PW

更新时间： 2024-11-15 07:04:47

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管 PC
页数	文件大小	规格书
37页	1121K
描述
High Efficiency PoE Interface and DC/DC Controller

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技术参数
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TPS23757PW 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP20,.25	针数：	20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	0.86	Samacsys Confidence：
Samacsys Status：	Released	Samacsys PartID：	417678
Samacsys Pin Count：	20	Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Other	Samacsys Footprint Name：	SOP65P640X120-20N
Samacsys Released Date：	2017-01-12 12:59:53	Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	57 V
最小输入电压：	5.8 V	标称输入电压：	10.2 V
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e4
长度：	6.5 mm	湿度敏感等级：	2
功能数量：	1	端子数量：	20
最高工作温度：	125 °C	最低工作温度：	-40 °C
最大输出电流：	0.535 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP20,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1 mm	子类别：	Switching Regulator or Controllers
最大供电电流 (Isup)：	1.2 mA	表面贴装：	YES
切换器配置：	SINGLE	最大切换频率：	278 kHz
温度等级：	AUTOMOTIVE	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	4.4 mm	Base Number Matches：	1

TPS23757PW 数据手册

TPS23757

www.ti.com ....................................................................................................................................................................................................... SLVS948–JULY 2009

High Efficiency PoE Interface and DC/DC Controller

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.

FEATURES

•

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

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 topologies. The controller also

features internal softstart, bootstrap startup source,

current-mode 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 filter design trade-offs.

Adapter ORing Support

Programmable Frequency with Synch.

Robust 100 V, 0.5 Ω Hotswap MOSFET

Pin Compatible with TPS23754/6

–40°C to 125°C Junction Temperature Range

Industry Standard TSSOP-20

APPLICATIONS

•

IEEE 802.3at (draft) type 1 Compliant Devices

Video and VoIP Telephones

Access Points

Security Cameras

The TPS23757 has

a 9 V converter startup,

permitting operation with 12 V wall adapters.

DESCRIPTION

The TPS23757 is a combined Power over Ethernet

(PoE) powered device (PD) interface and

current-mode dc/dc controller optimized specifically

for isolated converters. The PoE interface supports

the IEEE 802.3at (draft) standard for a type 1 PD,

which is equivalent to the 13W standard of IEEE

802.3-2008.

The TPS23757 supports a number of input voltage

ORing options including highest voltage, external

adapter preference, and PoE preference.

C_IN

V_OUT

L_OUT

APb

R_{APb_OUT}

DEN

R_APb

D_VC1

V_C

PPD

CLS

V_{APb_OUT}

V_B

Adapter

Present and

Converter

Running

V_SS

V_B

GATE

APD

CTL

FRS

R_OB

C_IZ

D_A

GAT2

R_APD1

TLV431

Optional

Interface

C_IO

Figure 1. High Efficiency Converter Using TPS23757

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.

12 3 4 5 6 7...37

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TPS23757PW 替代型号

型号	品牌	替代类型	描述	数据表
TPS23757PWR	TI	完全替代	High Efficiency PoE Interface and DC/DC Controller
TPS23754PWP	TI	类似代替	High Power/High Efficiency PoE Interface and DC/DC Controller
TPS23756PWP	TI	类似代替	High Power/High Efficiency PoE Interface and DC/DC Controller

与TPS23757PW相关器件

型号	品牌	获取价格	描述	数据表
TPS23757PWR	TI	获取价格	High Efficiency PoE Interface and DC/DC Controller
TPS23758	TI	获取价格	具有非光电同步反激式直流/直流控制器的 IEEE 802.3at PoE PD
TPS23758RJJR	TI	获取价格	具有非光电同步反激式直流/直流控制器的 IEEE 802.3at PoE PD \| RJJ
TPS23758RJJT	TI	获取价格	具有非光电同步反激式直流/直流控制器的 IEEE 802.3at PoE PD \| RJJ
TPS2375D	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
TPS2375DG4	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
TPS2375DR	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
TPS2375DRG4	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
TPS2375PW	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
TPS2375PW-1	TI	获取价格	IEEE 802.3af PoE POWERED DEVICE CONTROLLERS WITH AUTO-RETRY

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