- 您現(xiàn)在的位置：買賣IC網 > PDF目錄97995 > L6714 (STMICROELECTRONICS) SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | L6714 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封裝： | 10 X 10 MM, LEAD FREE, TQFP-64 |
| 文件頁數(shù)： | 46/70頁 |
| 文件大?。?/td> | 694K |
| 代理商： | L6714 |
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頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁當前第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁
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 ID-VID and, since the device reads across MOSFET RdsON 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 IOCTH(min) of the threshold as follow:
where IOCPx is the current measured by the current reading circuitry when the device enters
Quasi-Constant-Current. IOCPx must be calculated starting from the corresponding output
current value IOUT(OCP) as follow (ID-VID must also be considered when D-VID are
implemented) considering that the device performs Track & Hold only for the LS sense
mode:
where IOUT(OCP) is still the output current value at which the device enters Quasi-Constant-
Current, IPP is the inductor current ripple in each phase ID-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
I
OCPx max
()
R
SENSE max
()
I
OCTH min
()
-----------------------------------------------------------------------
=
I
OCPx
I
OUT OCP
()
N
---------------------------
I
PP
2
------------
I
DVID
–
N
------------------
+
–
LowSideMosfetSense
I
OUT OCP
()
N
---------------------------
I
PP
2
------------
I
DVID
–
N
------------------
++
InductorDCRSense
=
相關PDF資料 |
PDF描述 |
|---|---|
| L6725TR | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6728ATR | SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728A | SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728D | 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6911C | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6714TR | 功能描述:功率驅動器IC 4 Phase Controller RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝: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:開關變換器、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 開關頻率:1 MHz 工作溫度范圍: 安裝風格: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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。