參數(shù)資料
型號(hào)： TPS61200DRCTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.5 A BATTERY CHARGE CONTROLLER, 1650 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁(yè)數(shù)： 9/28頁(yè)
文件大?。?/td> 1012K
代理商： TPS61200DRCTG4
www.ti.com
Capacitor at VAUX
Layout Considerations
THERMAL INFORMATION
P
D(MAX)
+
T
J(MAX)
* T
A
R
q
JA
+ 125°C * 85°C
48.7
°C W
+ 820 mW
(6)
SLVS577B – MARCH 2007 – REVISED FEBRUARY 2008
Between the VAUX pin and GND a capacitor must be connected. This capacitor is used to maintain and filter the
control supply voltage. It is charged during startup and before the main output VOUT is turned on. To ensure
stable operation, using at least 0.1
F is recommended. At output voltages below 2.5 V, the capacitance should
be in the range of 1
F. Since this capacitor is also used as a snubber capacitor for the main switch, using a
ceramic capacitor with low ESR is important.
As for all switching power supplies, the layout is an important step in the design, especially at high peak currents
and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as
well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground
tracks. The input and output capacitor, as well as the inductor should be placed as close as possible to the IC.
Use a common ground node for power ground and a different one for control ground to minimize the effects of
ground noise. Connect these ground nodes at any place close to one of the ground pins of the IC.
The feedback divider should be placed as close as possible to the control ground pin of the IC. To lay out the
control ground, it is recommended to use short traces as well, separated from the power ground traces. This
avoids ground shift problems, which can occur due to superimposition of power ground current and control
ground current.
Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires
special attention to power dissipation. Many system-dependent issues such as thermal coupling, airflow, added
heat sinks and convection surfaces, and the presence of other heat-generating components affect the
power-dissipation limits of a given component.
Three basic approaches for enhancing thermal performance are listed below.
Improving the power dissipation capability of the PCB design
Improving the thermal coupling of the component to the PCB
Introducing airflow in the system
The maximum recommended junction temperature (TJ) of the TPS6120x devices is 125°C. The thermal
resistance of the 10-pin QFN 3
× 3 package (DRC) is RθJA = 48.7 °C/W, if the PowerPAD is soldered. Specified
regulator operation is assured to a maximum ambient temperature TA of 85°C. Therefore, the maximum power
dissipation is about 820 mW. More power can be dissipated if the maximum ambient temperature of the
application is lower.
Copyright 2007–2008, Texas Instruments Incorporated
17
Product Folder Link(s): TPS61200 TPS61201 TPS61202
相關(guān)PDF資料
PDF描述
TL4051CIDCKTG4 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.212 V, PDSO5
TK75003UIBX SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, PDSO5
TD300-024-24-CP 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE
TD300-048-12-IN 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE
TD300-150-24-CN 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS61200EVM-179 功能描述:電源管理IC開發(fā)工具 TPS61200EVM-179 Evaluation Module RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS61201 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER WITH 1.3-A SWITCHES
TPS61201DRC 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER WITH 1.3-A SWITCHES
TPS61201DRCR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.3V In Vltg Boost RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS61201DRCRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.3V In 3.3V Out Vltg Boost Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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