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| 型号： | L6995STR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO20 |
| 封装： | MO-153-AC, TSSOP-20 |
| 文件页数： | 5/26页 |
| 文件大小： | 427K |
| 代理商： | L6995STR |
13/26
L6995S
5.3 NOTE
There is a linear regulator on board, it allows to use one generator (only for the power section, in fact the IC
section is powered by the linear regulator); if the regulator is used close the J1, other wise it has to keep open.
Be careful measuring the efficiency with the linear regulator asserted.
At high current in the integrator configuration (around 20A), it can be seen an oscillation in the switching fre-
quency due to the noise interaction, to reduce this oscillation put a noise filter RN, CN like in the figure 9. Note
the RN resistor is in the place of the INT jumper near C4. RN, CN, should be selected with a pole frequency
around 1Mhz, but anyway higher than switching frequency (five times).
5.4 DEMOBOARD LAYOUT
Real dimensions: 5,7 cm X 7,7 cm (2,28inch X 3, 08inch)
Figure 11. PCB layout: bottom side
Figure 12. PCB Layout: Top side
Figure 13. Internal ground plane
Figure 14. Power & signal plane
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6996 | 功能描述:DC/DC 开关控制器 Step-Down Contrllr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6996-1 | 制造商:Johanson 功能描述:TUNING ROTOR |
| L6996-13 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6996-16 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6996-17 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
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