參數(shù)資料
型號(hào)： L6911DTR
廠商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝： SO-20
文件頁(yè)數(shù)： 4/17頁(yè)
文件大?。?/td> 241K
代理商： L6911DTR
Obsolete
Product(s)
- Obsolete
Product(s)
L6911D
12/17
s
From the above equations, it results:
;
Where IMAX is the maximum output current.
s
The component R3 must be chosen in order to obtain R3<<R8//R9 to permit these and successive
simplifications.
Therefore, with the droop function the output voltage decreases as the load current increases, so the DC output
impedance is equal to a resistance ROUT. It is easy to verify that the output voltage deviation under load tran-
sient is minimum when the output impedance is constant with frequency.
To choose the other components of the compensation network, the transfer function of the voltage loop is con-
sidered. To simplify the analysis is supposed that R3 << Rd, where Rd = (R8//R9).
Figure 8. Compensation network definition
The transfer function may be evaluated neglecting the connection of R8 to PHASE because, as will see later,
this connection is important only at low frequencies. So R4 is considered connected to VOUT. Under this as-
sumption, the voltage loop has the following transfer function:
R8
V
+
R2
V
PRO G
-----------------------
R
L
I
MAX
V
DROOP
---------------------------
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R9
R8
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DROOP
R
L
I
MAX
---------------------------
1
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R
L
I
MAX
---------------------------
+
-------------------------------------
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相關(guān)PDF資料
PDF描述
L6911E 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6911ETR 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6924U013 POWER SUPPLY SUPPORT CKT, PQCC16
L6924U013TR POWER SUPPLY SUPPORT CKT, PQCC16
L6924U POWER SUPPLY SUPPORT CKT, QCC16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6911E 功能描述:DC/DC 開(kāi)關(guān)控制器 5-Bit Prog Step-Down 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
L6911E_07 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5-Bit programmable step down controller with synchronous rectification
L6911ETR 功能描述:DC/DC 開(kāi)關(guān)控制器 5B PROGRAMMABLE STEP DOWN 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
L6912-2 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG
L6913-1 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,1/BG
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