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參數(shù)資料
| 型號： | TPS5300DAPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.3 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO32 |
| 封裝： | GREEN, PLASTIC, HTSSOP-32 |
| 文件頁數(shù)： | 7/23頁 |
| 文件大?。?/td> | 476K |
| 代理商： | TPS5300DAPR |
TPS5300
SLVS334A DECEMBER 2000 REVISED SEPTEMBER 2001
15
www.ti.com
APPLICATION INFORMATION
Figure 1 is a standard application schematic. The circuit can be divided into the power-stage section and the
control-circuit section. The power stage that includes the power FETs (Q1Q3), input capacitor (C2), output filter
(L1 and C3), and the current sense resistor (R1) must be tailored to the input/output requirements of the
application. The design documentation and test results for different mobile CPU power supplies covering core
current from 13 A and up to 40 A is available from the factory upon request or can be found in applications notes.
The control circuit is basically the same for all applications with minor tweaking of specific values.
The main waveforms are shown in Figure 2 through Figure 5. These waveforms include the following:
D The output ripple and Vds voltage of the low-side FET in the whole input voltage range (see Figure 2).
D The dynamic output voltage change between the performance and battery modes of operation (see
Figure 3).
D The transient response characteristics on the load current step up and down transitions (see Figure 4).
D The typical start-up waveforms for core, clock and I/O voltages (see Figure 5).
The waveforms confirm the excellent dynamic characteristics of the hysteretic controller. The modification, that
includes an additional ramp signal superimposed to the input VSENSE_CORE internally and externally by
circuits R17, R22, C13, and C10 makes the switching frequency independent of the output filter characteristics.
It also decreases the comparator delay times by increasing efficiency overdrive. This approach is shown in
Figure 6.
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相關(guān)代理商/技術(shù)參數(shù) |
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| TPS5300DAPRG4 | 功能描述:DC/DC 開關(guān)控制器 Mobile CPU DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS53014 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single Synchronous Step-down Controller for Low Voltage Power Rails |
| TPS53014DGS | 功能描述:DC/DC 開關(guān)控制器 Sgl Sync SD Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS53014DGSR | 功能描述:DC/DC 開關(guān)控制器 Sgl Sync SD Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS53014EVM-126 | 功能描述:電源管理IC開發(fā)工具 TPS53014 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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