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参数资料
| 型号： | TPS2420RSAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封装： | 4 X 4 MM, PLASTIC, QFN-16 |
| 文件页数： | 9/29页 |
| 文件大小： | 1368K |
| 代理商： | TPS2420RSAR |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第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
3
6
FAULT
CT
3
T
10
C
20
10
0.514
10
38.9
10
-
=
=
(
)
(
)
(
)
(
)
( )
AD _ IN max
IMON
LOAD max
63,000 V
63,000 2.5
R
63 k
I
2.5
=
W
(
) (
)
( )
IMON
LOAD
IMON
63,000 V
63,000 1.8
I
1.81 A
R
62,500
=
www.ti.com
SLUS903C – JANUARY 2009 – REVISED AUGUST 2010
Because IFAULT satisfies the spin up current, the timer can be set for the additional loading of charging the
capacitor. Estimate approximately 20 ms. Use either Equation 12 or Table 2 to estimate the capacitance.
(12)
For a scaled analog readback of the current from VIN, set the IMON resistor. In Equation 13 , the VAD_INMAX is the
desired full scale A/D converter voltage. The largest value of VAD_INMAX 2.5 V. ILOADMAX is the full scale current,
2.5 A.
(13)
The read-back voltage at the IMON pin, VIMON, indicates the instantaneous current output. Using equation
Equation 14 again, determine the current output for example, a 1.8-V VIMON. Substitute VIMON for VAD_INMAX and
(14)
Layout
Support Components
Locate all TPS2420 support components, RSET, CT, etc. or any input or output voltage clamps, close to their
connection pin. Connect the other end of the component to the inner layer GND without trace length.
PowerPad
When properly mounted the PowerPad package provides significantly greater cooling ability than an ordinary
package. To operate at rated power the Power Pad must be soldered directly to the PC board GND plane
directly under the device. The PowerPad is at GND potential and can be connected using multiple vias to inner
layer GND. Other planes, such as the bottom side of the circuit board can be used to increase heat sinking in
higher current applications.
Refer to Technical Briefs: PowerPAD Thermally Enhanced Package (TI Literature Number SLMA002) and
PowerPAD Made Easy (TI Literature Number SLMA004) for more information on using this PowerPadTM
package.These documents are available at www.ti.com (Search by Keyword).
Copyright 2009–2010, Texas Instruments Incorporated
17
Product Folder Link(s): TPS2420
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| TPS2420RSAT | 功能描述:热插拔功率分布 Int FET 0-5A Dual Fault Threshold 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 |
| TPS2420RSAT | 制造商:Texas Instruments 功能描述:Hot Swap Contoller IC |
| TPS2421-1DDA | 功能描述:热插拔功率分布 3-20V Integ FET 0-5A Hot Swap 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 |
| TPS2421-1DDAR | 功能描述:热插拔功率分布 3-20V Integ FET 0-5A Hot Swap 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 |
| TPS2421-1EVM-02 | 功能描述:电源管理IC开发工具 TPS2421-1 Hot Swap Controller 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 |
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