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参数资料
| 型号： | L6911DTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 16/17页 |
| 文件大小： | 241K |
| 代理商： | L6911DTR |
Obsolete
Product(s)
- Obsolete
Product(s)
L6911D
8/17
Figure 3. High Side driver peak current. Vboot-Vphase=12V (left) Vboot-Vphase=5V (right)
Figure 4. Low Side driver peak current. Vcc=12V (left) Vcc=5V (right)
Monitoring and Protections
The output voltage is monitored by means of pin 1 (VSEN). If it is not within ±12% (typ.) of the programmed
value, the powergood output is forced low.
The device provides overvoltage protection, when the output voltage reaches a value 17% (typ.) grater than the
nominal one. If the output voltage exceeds this threshold, the OVP pin is forced high, triggering an external SCR
to shuts the supply (VIN) down, and also the lower driver is turned on as long as the over-voltage is detected.
To perform the overcurrent protection the device compares the drop across the high side MOS, due to the
RDSON, with the voltage across the external resistor (ROCS) connected between the OCSET pin and drain of
the upper MOS. Thus the overcurrent threshold (IP) can be calculated with the following relationship:
Where the typical value of IOCS is 200A. To calculate the ROCS value it must be considered the maximum
RDSON (also the variation with temperature) and the minimum value of IOCS. To avoid undesirable trigger of
CH1 = High Side Gate
CH4 = Gate Current
CH1 = Low Side Gate
CH4 = Gate Current
I
P
I
OCS
R
OCS
R
DSON
---------------------------------
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6911E | 功能描述:DC/DC 开关控制器 5-Bit Prog Step-Down 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 |
| L6911E_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5-Bit programmable step down controller with synchronous rectification |
| L6911ETR | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER 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 |
| L6912-2 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG |
| L6913-1 | 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,1/BG |
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