- 您現(xiàn)在的位置：買賣IC網 > PDF目錄43901 > L6997DTR (STMICROELECTRONICS) SWITCHING CONTROLLER, PDSO20 PDF資料下載
參數資料
| 型號： | L6997DTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO20 |
| 封裝： | MO-153AC, TSSOP-20 |
| 文件頁數： | 14/30頁 |
| 文件大小： | 591K |
| 代理商： | L6997DTR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
Obsolete
Product(s)
- Obsolete
Product(s)
21/30
L6997
7.2 DEMO BOARD LAYOUT
Real dimensions: 5.7cm x 7.7cm (2.28inch x 3. 08inch)
Figure 18. PCB layout: bottom side
Figure 19. PCB Layout: Top side
Figure 20. Internal ground plane
Figure 21. Power & signal plane
Table 12. PCB Layout guidelines
Goal
Suggestion
To minimize radiation and magnetic
coupling with the adjacent circuitry.
1) Minimize switching current loop areas. (For example placing CIN, High Side
and Low side MOSFETS, Shottky diode as close as possible).
2) Place controller placed as close as possible to the power MOSFETs.
3) Group the gate drive components (Boot cap and diode) near the IC.
To maximize the efficiency.
Keep power traces and load connections short and wide.
To ensure high accuracy in the
current sense system.
Make Kelvin connection for Phase pin and PGND pin and keep them as close
as possible to the Low Side MOSFETS.
To reduce the noise effect on the IC.
1) Put the feedback component (like output divider, integrator network, etc) as
close as possible to the IC.
2) Keep the feedback traces parallel and as close as possible. Moreover they
must be routed as far as possible from the switching current loops.
3) Make the controller ground connection like the figure 8.
相關PDF資料 |
PDF描述 |
|---|---|
| L7200 | DISK DRIVE MOTOR CONTROLLER, 2.6 A, PQFP64 |
| L7250 | VOICE COIL MOTOR CONTROLLER, PQFP64 |
| L7980A | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7980 | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7980TR | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L6997S | 功能描述:DC/DC 開關控制器 STEP DOWN CONTROLLER Lo Vltg Operations 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 |
| L6997STR | 功能描述:DC/DC 開關控制器 3.0 to 5.5V Step-Dwn 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 |
| L6998-0 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6998-1 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6998-5 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
發(fā)布緊急采購，3分鐘左右您將得到回復。