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參數資料
| 型號： | TPS40200MDREPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 29/43頁 |
| 文件大?。?/td> | 1069K |
| 代理商： | TPS40200MDREPG4 |
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Layout Hints
SGLS371 – JANUARY 2007
DESIGN REFERENCES (continued)
AC current loops must be kept as short as possible. For the maximum effectiveness from C1, place it near
the VDD pin of the controller and design the input ac loop consisting of C1-RSENSE-Q1-D1 to be as short as
possible. Excessive high-frequency noise on VDD during switching degrades overall regulation as the load
increases.
Output loop A (D1-L1-C2) also should be kept as small as possible. Otherwise, the application’s output noise
performance is degraded.
It is recommended that traces carrying large ac currents NOT be connected through a ground plane. Instead,
use PCB traces on the top layer to conduct the ac current and use the ground plane as a noise shield. Split
the ground plane as necessary to keep noise away from the TPS40200 and noise-sensitive areas, such as
feedback resistors, R6 and R10.
Keep the SW node as physically small as possible to minimize parasitic capacitance and to minimize
radiated emissions
For good output voltage regulation, Kelvin connections should be brought from the load to R6 and R10.
The trace from the R6-R10 junction to the TPS40200 should be short and kept away from any noise source,
such as the SW node.
The gate drive trace should be as close to the power FET gate as possible.
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相關代理商/技術參數 |
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| TPS40200-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDE-INPUT-RANGE NONSYNCHRONOUS VOLTAGE-MODE CONTROLLER |
| TPS40200QDRQ1 | 功能描述:DC/DC 開關控制器 Wide-Inp-Rng Nonsync Vltg-Mode Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40200SHKJ | 功能描述:DC/DC 開關控制器 Wide Inp Non-Sync Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40200SHKQ | 功能描述:DC/DC 開關控制器 Hi Temp Non-Sync Buck DC/DC Cntlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40200SKGD1 | 功能描述:DC/DC 開關控制器 Wide Input Non-Synch RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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