參數(shù)資料
型號(hào)： L6710TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, PQFP44
封裝： 10 X 10 MM, 1 MM HEIGHT, TQFP-44
文件頁數(shù)： 13/34頁
文件大?。?/td> 1610K
代理商： L6710TR
L6710
20/34
The worst condition depends on the input voltage available and the output voltage selected. Anyway the
worst case is the response time after removal of the load with the minimum output voltage programmed
and the maximum input voltage available.
MAIN CONTROL LOOP
The control loop is composed by the Current Sharing control loop and the Average Current Mode control
loop. Each loop gives, with a proper gain, the correction to the PWM in order to minimize the error in its
regulation: the Current Sharing control loop equalize the currents in the inductors while the Average Cur-
rent Mode control loop fixes the output voltage equal to the reference programmed by VID. Figure 13 re-
ports the block diagram of the main control loop.
Figure 13. Main Control Loop Diagram
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 (IAVG) is internally 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. 14).
The current sharing control is a high bandwidth control loop allowing current sharing even during load tran-
sients.
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 am-
plifier; considering a voltage offset equal to 2mV across the sense resistor, the current reading error is
given by the following equation
t
app lic atio n
L
I
V
IN
V
OUT
–
------------------------------
t
re m ov al
L
I
V
OUT
--------------
=
L1
L2
+
PWM1
1/5
+
-
1/5
IINFO2
IINFO1
4/5
ZF(S)
PWM2
CO
FB
COMP
RO
ERROR
AMPLIFIER
REFERENCE
PROGRAMMED
BY VID
CURRENT
SHARING
DUTY CYCLE
CORRECTION
RFB
D02IN1392
I
REA D
I
MAX
--------------------
2mV
R
SENSE
I
MAX
---------------------------------------
=
相關(guān)PDF資料
PDF描述
L6713ATR 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64
L6716TR DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48
L6716 DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48
L6722 SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36
L6722TR SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6711 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
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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。