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參數(shù)資料
| 型號： | L6714TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs |
| 中文描述： | 4英特爾VR10，VR11和AMD的6位嵌入式CPU的司機相控制器 |
| 文件頁數(shù)： | 50/70頁 |
| 文件大?。?/td> | 572K |
| 代理商： | L6714TR |
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Over current protection
L6714
50/70
18
Over current protection
Depending on the current reading method selected, the device limits the peak or the bottom
of the inductor current entering in constant current until setting UVP as below explained.
The Over Current threshold has to be programmed, by designing the Rg resistors, to a safe
value, in order to be sure that the device doesn't enter OCP during normal operation of the
device. This value must take into consideration also the extra current needed during the
Dynamic VID Transition I
D-VID
and, since the device reads across MOSFET R
dsON
or
inductor DCR, the process spread and temperature variations of these sensing elements.
Moreover, since also the internal threshold spreads, the Rg design has to consider the
minimum value I
OCTH(min)
of the threshold as follow:
I
-----------------------------------------------------------------------
=
where I
OCPx
is the current measured by the current reading circuitry when the device enters
Quasi-Constant-Current. I
OCPx
must be calculated starting from the corresponding output
current value I
OUT(OCP)
as follow (I
D-VID
must also be considered when D-VID are
implemented) considering that the device performs Track & Hold only for the LS sense
mode:
where I
OUT(OCP)
is still the output current value at which the device enters Quasi-Constant-
Current, I
PP
is the inductor current ripple in each phase I
D-VID
is the additional current
required by D-VID (when applicable) and N the number of phases. In particular, since the
device limits the peak or the valley of the inductor current (according to DAC/CS_SEL
status), the ripple entity, when not negligible, impacts on the real OC threshold value and
must be considered.
Rg
R
I
OCTH min
)
)
I
OCPx
I
N
I
N
)
--------------------------
I
2
I
2
-----------
I
-----------------
N
+
–
LowSideMosfetSense
)
--------------------------
-----------
I
-----------------
N
+
+
InductorDCRSense
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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:開關(guān)變換器、穩(wěn)壓器與控制器 2/3/4 phase CNTRL Embedded Drivers RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝: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 |
| L6717ATR | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller T/R 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Tape and Reel 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
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