參數(shù)資料
型號： L6711
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48
封裝： 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁數(shù)： 18/50頁
文件大?。?/td> 679K
代理商： L6711
Obsolete
Product(s)
- Obsolete
Product(s)
L6711
Voltage positioning
25/50
Since IDROOP depends on the current information about the three phases, the output
characteristic vs. load current is given by:
Where RSENSE is the chosen sensing element resistance (Inductor DCR or LS RdsON), IOUT
is the output current of the system and RDROOP is its equivalent output resistance (The
whole power supply can be then represented by a "real" voltage generator with a voltage
value of VID and an equivalent series resistance RDROOP).
RFB resistor can be also designed according to the RDROOP specifications as follow:
Figure 10.
Voltage positioning with offset
10.2
Offset
The OFFSET pin allows programming a positive or a negative offset (VOS) for the output
voltage.
When the Integrated Thermal Sensor is disabled (TC = SGND) a resistor ROFFSET
connected vs. SGND increases the output voltage: since the pin is internally fixed at 1.240V,
the current programmed by the resistor ROFFSET is mirrored and then properly subtracted
from the IFB current (see Figure 10) as follow (Only the IOFFSET contribute to IFB has been
considered):
The device will add the programmed offset VOS to the output programmed voltage
(considering now also the droop effect) subtracting the relative offset current from the
feedback current IFB:
VID
R
FB
I
DR OOP
–
VID
R
FB
R
SENSE
Rg
--------------------- IOUT
–
VID
R
DROOP
I
OUT
–
==
R
FB
R
DROOP
Rg
R
SEN SE
---------------------
=
1.240V
I OFFSET
1:1
ROFFSET
OFFSET
TC
IDROOP
VID
FB
COMP
I
FB
VSEN
64k
FBR
FBG
64k
RF
CF
RFB
To Vcore
(Remote Sense)
IOFFSET
V
OUT
VID
R
FB
I
OFFSET
+
VID
R
FB
1.240V
R
OFFSET
------------------------
+
VID
V
OS
+
==
=
VID
R
FB
I
FB
–
VID
R
FB
I
D ROOP
I
OFFSET
–
() = VID R
FB
I
OFFSET
R
D ROOP IOUT
–
+
–
=
相關(guān)PDF資料
PDF描述
L6714TR SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64
L6714 SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6711_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs
L6711TR 功能描述:DC/DC 開關(guān)控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6712 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712_05 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712A 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
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