參數(shù)資料
型號(hào)： L6919
英文描述： 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
中文描述： 5位可編程雙相與動(dòng)態(tài)VID管理控制器
文件頁(yè)數(shù)： 18/32頁(yè)
文件大?。?/td> 558K
代理商： L6919
L6919C
18/32
Current Sharing (CS) Control Loop
Active current sharing is implemented using the information from Tran conductance differential amplifier in an
average current mode control scheme. A current reference equal to the average of the read current (I
AVG
) is in-
ternally built; the error between the read current and this reference is converted to a voltage with a proper gain
and it is used to adjust the duty cycle whose dominant value is set by the error amplifier at COMP pin (See fig. 13).
The current sharing control is a high bandwidth control loop allowing current sharing even during load transients.
The current sharing error is affected by the choice of external components; choose precise Rg resistor (±1% is
necessary) to sense the current. The current sharing error is internally dominated by the voltage offset of Tran
conductance differential amplifier; considering a voltage offset equal to 2mV across the sense resistor, the cur-
rent reading error is given by the following equation:
I
I
MAX
R
SENSE
I
MAX
Where
I
READ
is the difference between one phase current and the ideal current (I
MAX
/2).
For R
SENSE
= 4m
and I
MAX
= 40A the current sharing error is equal to 2.5%, neglecting errors due to Rg and
Rsense mismatches.
Figure 13. Current Sharing Control Loop
Average Current Mode (ACM) Control Loop
The average current mode control loop is reported in figure 14. The current information I
FB
sourced by the FB
pin flows into RFB implementing the dependence of the output voltage from the read current.
The ACM control loop gain results (obtained opening the loop after the COMP pin):
Where:
–
is the equivalent output resistance determined by the droop function;
– Z
P
(s) is the impedance resulting by the parallel of the output capacitor (and its ESR) and the applied
load Ro;
– Z
F
(s) is the compensation network impedance;
– Z
L
(s) is the parallel of the two inductor impedance;
– A(s) is the error amplifier gain;
-------------------
---------------------------------------
=
L1
L2
+
+
PWM1
1/5
1/5
I
INFO2
I
INFO1
PWM2
COMP
V
OUT
CURRENT
SHARING
DUTY CYCLE
CORRECTION
D02IN1393
G
LOOP
s
( )
PWM Z
s
--------------------------------------------------------------------------------+
( )
R
Z
s
A s
A s
)
Z
P
s
( )
Z
L
s
( )
+
(
)
--------------
1
-----------
+
R
FB
+
=
R
DROOP
R
R
g
------------------
R
FB
=
相關(guān)PDF資料
PDF描述
L7150 Interface IC
L7152 Interface IC
L7180 Interface IC
L7182 Interface IC
L72CB-1G1YDA-2L RIGHT ANGLE LED LAMPS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6919C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919CD 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Dual-Phase Cont 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
L6919CDTR 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Dual-Phase Cont 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
L6919E 功能描述:DC/DC 開(kāi)關(guān)控制器 5-Bit Dual Ph Contlr 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
L6919ETR 功能描述:DC/DC 開(kāi)關(guān)控制器 5-Bit Dual Ph Contlr 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*