- 您现在的位置：买卖IC网 > PDF目录98280 > TPS2393APWRG4 (TEXAS INSTRUMENTS INC) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 PDF资料下载
参数资料
| 型号： | TPS2393APWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封装： | GREEN, PLASTIC, TSSOP-14 |
| 文件页数： | 14/30页 |
| 文件大小： | 665K |
| 代理商： | TPS2393APWRG4 |
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页当前第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
TPS2393A
SLUS610 JULY 2004
21
www.ti.com
APPLICATION INFORMATION
Setting the Undervoltage and Overvoltage Thresholds
The UVLO and OVLO pins can be used to set the undervoltage (VUV) and overvoltage (VOV) thresholds of the
hot swap circuit. When the input supply is below VUV or above VOV, the GATE pin is held low, disconnecting
power from the load, and deasserting the PG output. When input voltage is within the UV/OV window, the GATE
drive is enabled, assuming all other input conditions are valid for turn-on.
Threshold hysteresis is provided via two internal sources which are switched to either pin whenever the
corresponding input level exceeds the internal 1.4-V reference. The additional bias shifts the pin voltage in
proportion to the external resistance connected to it. This small voltage shift at the device pin is gained up by
the external divider to input supply levels.
UDG20119
R8
R2
R1
R7
GND
48V
GND
48V
VIN
RTN
TPS2393A*
UVLO
OVLO
1
14
11
8
VIN
RTN
TPS2393A*
UVLO
OVLO
1
14
11
8
R1
200 k
1%
R2
4.99 k
1%
R3
3.92 k
1%
(a)
(b)
V
OV_L +
R1
) R2 ) R3
R3
V
REF * ISRC_UV
R1
V
UV_L +
R1
) R2 ) R3
R2
) R3
V
REF
V
OV_L +
R7
) R8
R8
V
TH_OV
V
UV_L +
R1
) R2
R2
V
TH_UV
*Additional details omitted for clarity.
Figure 25. Programming the Undervoltage and Overvoltage Thresholds
The UV and OV thresholds can be individually programmed with a three-resistor divider connected to it as
shown in the typical application diagram, and again in Figure 27a. When the desired trip voltages and
undervoltage hysteresis have been established for the protected board, the resistor values needed can be
determined from the following equations. Generally, the process is simplest by first selecting the top leg of the
divider (R1 in the diagram) needed to obtain the threshold hysteresis. This value is calculated from equation (9).
R1
+
V
HYS_UV
10
mA
where:
D VHYS_UV is the undervoltage hysteresis value
(9)
相关PDF资料 |
PDF描述 |
|---|---|
| TPS2421-1DDAR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2421-2DDAR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS2459RHBR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| TPS2459RHB | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| TPS24701DGK | POWER SUPPLY SUPPORT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2393DBT | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. 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 |
| TPS2393DBTG4 | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. 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 |
| TPS2393DBTR | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. 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 |
| TPS2393DBTRG4 | 功能描述:热插拔功率分布 -48V Hot Swap G179 Pwr Mgr Ind Temp 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 |
| TPS2393EVM | 功能描述:电源管理IC开发工具 Simple -48V Hot Swap Contr EVM 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 |
发布紧急采购，3分钟左右您将得到回复。