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參數資料
| 型號： | TPS23770PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 565 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | GREEN, PLASTIC, HTSSOP-20 |
| 文件頁數： | 1/38頁 |
| 文件大小： | 1036K |
| 代理商： | TPS23770PWPRG4 |
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1
FEATURES
DESCRIPTION
APPLICATIONS
T
P
S
2
3
7
5
0
TLV431
C
T
MR
VBIAS
TMR
FREQ
GATE
COM
RSN
AUX
RSP
FB
COMP
VBIAS
VDD
VBIAS
SEN
5
8
V
0.1
F
m
R
D
ET
R
C
L
A
SS
V
D
VSS
CLASS
DET
LowVoltage
Isolated
Output
C
B
IA
S
MODE
SENP
BL
RTN
FromS
p
are
Pairsor
T
ransformers
FromEthernet
T
ransformers
SLVS590B – JULY 2005 – REVISED FEBRUARY 2008
www.ti.com
INTEGRATED 100-V IEEE 802.3af PD AND DC/DC CONTROLLER
2
Complete 802.3af PoE Interface
–
Features derived from the TPS2375
The TPS23750 integrates the functionality of the
TPS2375 with a primary-side dc/dc PWM controller.
–
100 V, 0.6
Internal Pass MOSFET
The designer can create a front-end solution for
–
Standard and Legacy UVLO Choices
PoE-PD
applications
with
minimum
external
–
Fixed 140 mA Inrush Limit
components. The TPS23770 is identical to the
TPS23750 with the exception of the undervoltage
Primary Side DC/DC Converter Control
lockout turn-on voltage, which is compatible with
–
Minimum External Component Count
legacy systems.
–
Current Mode Control
The PoE front end has all the necessary IEEE
–
Isolated and Non-Isolated Topologies
802.3af functions including detection, classification,
–
Programmable Operating Frequency
undervoltage lockout and inrush control. The PoE
input switch is integrated within the TPS23750.
–
Current Sense Leading-edge Blanking
–
50% Duty Cycle Limiting
The dc/dc controller section is designed to support
flyback, forward, and nonsynchronous low-side switch
–
Voltage Output Error Amplifier
buck topologies.
Internal PoE and Converter Sequencing
The external switching MOSFET and current sense
Industry-Standard 20 Lead Package
resistor provide flexibility in topology, power level, and
Industrial Temperature Range: –40°C to 85°C
current
limit.
The
full-featured
dc/dc
controller
includes programmable soft start, hiccup type fault
limiting, 50% maximum duty cycle, programmable
constant
switching
frequency,
and
a
true
All PoE PD Devices Including:
voltage-output error amplifier. Additional protection
–
Wireless Access Points
features provide for robust designs.
–
VoIP Phones
–
Security Cameras
Figure 1. Typical Application
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 2005–2008, 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.
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| TPS23750PWP | 1.3 A SWITCHING CONTROLLER, 565 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS23770PWPG4 | 1.3 A SWITCHING CONTROLLER, 565 kHz SWITCHING FREQ-MAX, PDSO20 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS2377D | 功能描述:熱插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2377D-1 | 功能描述:熱插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2377D-1G4 | 功能描述:熱插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2377DG4 | 功能描述:熱插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2377DR | 功能描述:熱插拔功率分布 IEEE 802.3af PoE Pwr Device Cntrler RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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