- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384586 > L6919ETR (意法半導(dǎo)體) 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT PDF資料下載
參數(shù)資料
| 型號： | L6919ETR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT |
| 中文描述： | 5位可編程雙相與動態(tài)VID管理控制器 |
| 文件頁數(shù)： | 19/33頁 |
| 文件大?。?/td> | 606K |
| 代理商： | L6919ETR |
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頁當(dāng)前第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
19/33
L6919E
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 14. Current Sharing Control Loop
Average Current Mode (ACM) Control Loop
The average current mode control loop is reported in figure 15. 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;
–
· is the ACM PWM transfer function where
V
OSC
is the oscillator ramp amplitude
and has a typical value of 3V
Removing the dependence from the Error Amplifier gain, so assuming this gain high enough, the control loop
gain results:
-------------------
---------------------------------------
=
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
=
PWM
4
5
--
V
V
OSC
------------------
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6924D | Li-Ion/Li-Polymer Battery Charger System with Integrated Power Switch |
| L6928 | High efficiency monolithic synchronous step down regulator |
| L6928Q1 | High efficiency monolithic synchronous step down regulator |
| L6928TQ1TR | High efficiency monolithic synchronous step down regulator |
| L6928TR | High efficiency monolithic synchronous step down regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L-692 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:Common Mode Inductor |
| L6920 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
| L6920D | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 0.6 to 5.5V Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| L6920DB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Synchronous Rectifer Step Up Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| L6920DBTR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 SYNCRONOUS RECT. STEP UP CONVERTER RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。