參數(shù)資料
型號(hào)： L6711
廠商： 意法半導(dǎo)體
英文描述： 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs
中文描述： 3相控制器，動(dòng)態(tài)VID和可選數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù)： 17/38頁(yè)
文件大?。?/td> 591K
代理商： L6711
17/38
L6711
Figure 9. Remote Buffer Connections
8
Output voltage positioning is performed by selecting the reference DAC and by programming the different
contributors to the I
FB
current (see Figure 10). This current, sourced from the FB pin, causes the output
voltage to vary according to the external R
FB
resistor: this allows programming precise output voltage vari-
ations depending on the sensed current (Droop Function) as well as offsets for the regulation.
The three contributors to the I
FB
current value are:
■
Droop Function (green);
■
Offset (red);
■
Integrated Temperature Compensation (fuchsia).
Moreover, the embedded Remote Buffer allows to precisely programming the output voltage offsets and
variations by recovering the voltage drops across distribution lines.
The output voltage is then driven by the following relationship (I
OFFSET
sign depends on TC setting):
V
OUT
VID
R
FB
I
FB
–
VID
–
=
=
VOLTAGE POSITIONING
Figure 10. Voltage Positioning and Droop Function
8.1
Droop function allows the device to satisfy the requirements of high performance microprocessors, reduc-
ing the size and the cost of the output capacitor. This method "recovers" part of the drop due to the output
capacitor ESR in the load transient, introducing a dependence of the output voltage on the load current:
a static error proportional to the output current causes the output voltage to vary according to the sensed
current. As shown in figure 4-right, the ESR drop is present in any case, but using the droop function the
total deviation of the output voltage is minimized.
DROOP FUNCTION
RB used (up to ±0.5% Accuracy)
RB Not Used (Precision worsened)
VID
FB
COMP
VSEN
64k
FBR
FBG
6
64k
6
R
F
C
F
R
FB
(Remote Sense)
VID
FB
COMP
VSEN
64k
FBR
FBG
6
64k
6
R
F
C
F
R
FB
To Vcore
R
FB
I
DROOP
I
OFFSET
I
TC
–
±
(
)
V
MAX
V
MIN
V
NOM
ESR DROP
RESPONSE WITHOUT DROOP
RESPONSE WITH DROOP
I
DROOP
VID
FB
COMP
I
FB
VSEN
64k
FBR
FBG
6
64k
6
R
F
C
F
R
FB
(Remote Sense)
I
OFFSET
I
T
相關(guān)PDF資料
PDF描述
L6711TR 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs
L6714 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs
L6714TR 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs
L6726A Single phase PWM controller
L6726ATR Single phase PWM controller
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(chēng):STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs
L6711TR 功能描述:DC/DC 開(kāi)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(kāi)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(chēng):STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712_05 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
L6712A 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER
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