- 您现在的位置：买卖IC网 > PDF目录98280 > TPS24711 (TEXAS INSTRUMENTS INC) POWER SUPPLY SUPPORT CKT, PDSO10 PDF资料下载
参数资料
| 型号： | TPS24711 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 15/34页 |
| 文件大小： | 2148K |
| 代理商： | TPS24711 |
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页当前第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
LOAD
PROTECTION
0.1 F
B0440-02
M
1
12-VMainBusSupply
TIMER
OUT
GA
TE
VCC
SENSE
GND
TPS2471x
Specifications(atOutput):
PeakCurrentLimit=12 A
NominalCurrent=10 A
R
1.2
LOAD
W
C
470 F
OUT
C
T
R
SENSE
R
GATE
(
)
VCC
SENSE
LIM
SENSE
V
R
,
I
therefore,
25 mV
R
2 m
12 A
-
=
W
SLVSAL2C
– JANUARY 2011 – REVISED MAY 2011
threshold.
DESIGN EXAMPLE: POWER-LIMITED START-UP
This design example assumes a 12-V system voltage with an operating tolerance of
±2 V. The rated load current
is 10 A, corresponding to a dc load of 1.2
. If the current exceeds 12 A, then the controller should shut down
and then attempt to restart. Ambient temperatures may range from 20
°C to 50°C. The load has a minimum input
capacitance of 470
μF. Figure 34 shows a simplified system block diagram of the proposed application.
This design procedure seeks to control the junction temperature of MOSFET M1 under both static and transient
conditions by proper selection of package, cooling, rDS(on), current limit, fault timeout, and power limit. The design
procedure further assumes that a unit running at full load and maximum ambient temperature experiences a brief
input-power interruption sufficient to discharge COUT, but short enough to keep M1 from cooling. A full COUT
recharge then takes place. Adjust this procedure to fit your application and design criteria.
Figure 34. Simplified Block Diagram of the System Constructed in the Design Example
STEP 1. Choose RSENSE
From the TPS24710/11/12/13 electrical specifications, the current-limit threshold voltage, V(VCC – SENSE), is around
25 mV. A resistance of 2 m
is selected for the peak current limit of 12 A, while dissipating only 200 mW at the
rated 10-A current (see Equation 5). This represents a 0.17% power loss.
(5)
STEP 2. Choose MOSFET M1
The next design step is to select M1. The TPS24710/11/12/13 is designed to use an N-channel MOSFET with a
gate-to-source voltage rating of 20 V.
Devices with lower gate-to-source voltage ratings can be used if a Zener diode is connected so as to limit the
maximum gate-to-source voltage across the transistor.
22
Copyright
2011, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| TPS24711DGSR | POWER SUPPLY SUPPORT CKT, PDSO10 |
| TPS2481PW | POWER SUPPLY SUPPORT CKT, PDSO20 |
| TPS2480PW | POWER SUPPLY SUPPORT CKT, PDSO20 |
| TPS2490DGSRG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| TPS2490DGSR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS24711DGS | 功能描述:热插拔功率分布 2.5-18V Hi Eff Hot- Swap 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 |
| TPS24711DGSR | 功能描述:热插拔功率分布 2.5-18V Hi Eff Hot- Swap 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 |
| TPS24711EVM-004 | 功能描述:电源管理IC开发工具 TPS24711 Eval Mod 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 |
| TPS24712DGS | 功能描述:热插拔功率分布 2.5-18V Hi Eff Pwr- Ltd Hot-Swap Cntrlr 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 |
| TPS24712DGSR | 功能描述:热插拔功率分布 2.5-18V Hi Eff Pwr- Ltd Hot-Swap Cntrlr 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。