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参数资料
| 型号： | L6714 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封装： | 10 X 10 MM, LEAD FREE, TQFP-64 |
| 文件页数： | 49/70页 |
| 文件大小： | 694K |
| 代理商： | L6714 |
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L6714
Over current protection
53/70
18.2
Inductor sense over current
The device detects an over current when the IINFOx overcome the fixed threshold IOCTH.
Since the device always senses the current across the inductor, the IOCTH crossing will
happen during the HS conduction time: as a consequence of OCP detection, the device will
turn OFF the HS MOSFET and turns ON the LSMOSFET of that phase until IINFOx re-cross
the threshold or until the next clock cycle. This implies that the device limits the peak of the
inductor current.
In any case, the inductor current won't overcome the IOCPx value and this will represent the
maximum peak value to consider in the OC design.
The device works in Constant-Current, and the output voltage decreases as the load
increase, until the output voltage reaches the UVP threshold. When this threshold is
crossed, all MOSFETs are turned off and the device stops working. Cycle the power supply
or the OUTEN pin to restart operation.
The transconductance resistor Rg can be designed considering that the device limits the
inductor current ripple peak. Moreover, when designing D-VID systems, the additional
current due to the output filter charge during dynamic VID transitions must be considered.
where
Rg
I
OCPx max
()
R
SENSE max
()
I
OCTH min
()
-----------------------------------------------------------------------
=
I
OCPx
I
OUT OCP
()
N
---------------------------
I
PP
2
------------
I
DVID
–
N
------------------
++
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6714TR | 功能描述:功率驱动器IC 4 Phase Controller RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6716 | 制造商:STMicroelectronics 功能描述:DC DC Cntrlr Quad-OUT Sync Step Down 48-Pin VFQFPN EP Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:2/3/4 Phase Controlr Embedded Driver |
| L6716TR | 功能描述:开关变换器、稳压器与控制器 2/3/4 phase CNTRL Embedded Drivers RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6717 | 制造商:STMicroelectronics 功能描述:High-Efficiency Hybrid AM2r2 Controller 48-Pin VFQFPN Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717A | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
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