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参数资料
| 型号： | TPS2370D |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 2/17页 |
| 文件大小： | 426K |
| 代理商： | TPS2370D |
TPS2370
SLUS537C AUGUST 2002 REVISED MARCH 2004
www.ti.com
10
APPLICATION INFORMATION
Figure 1 shows an application where 40 V < VIN < 57 V. In this case, the brick supply is greater then 40 V and
goes through TPS2370.
3
1
2
4
5
TPS2370
6
DC/DC
CONVERTER
8
ETHERNET
DEVICE
VREG
V+
V
PoE POWERED DEVICE FRONT END
RJ45
DC
BRICK
SUPPLY
3
6
1
2
4
5
7
8
RX
TX
S
P
A
R
E
RDET
RLIM
CSS
CDCDCIN
RCLASS
Figure 1. For Applications 40 V < VIN < 57 V.
Figure 2 shows an application where VIN < 40 V. In this application, the brick supply is bypassing the switch.
Consequently, the dc-to-dc converter can operate from any voltage. However, for VBRICK < 23 V, a class 0
resistor (RCLASS = 4.42 k) is recommended. This minimizes the power dissipation in TPS2370 if VBRICK falls in
the classification voltage range (15 V to 20 V). The 80-
A current sink on EN_DC pin is enabled only if VDD > 40
V.
RDET
RLIM
CSS
CDCDCIN
RCLASS
3
1
2
4
5
TPS2370
6
DC/DC
CONVERTER
8
ETHERNET
DEVICE
VREG
V+
V
PoE POWERED DEVICE FRONT END
RJ45
DC
BRICK
SUPPLY
3
6
1
2
4
5
7
8
RX
TX
S
P
A
R
E
Figure 2. For Applications VIN < 40 V.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2370DG4 | 功能描述:热插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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 |
| TPS2370DR | 功能描述:热插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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 |
| TPS2370DRG4 | 功能描述:热插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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 |
| TPS2370EVM | 制造商:Texas Instruments 功能描述:TPS2370EVM - Bulk |
| TPS2370PW | 功能描述:热插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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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