參數(shù)資料
型號: L6728ATR
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10
封裝: 3 X 3 MM, VFDFPN-10
文件頁數(shù): 7/32頁
文件大?。?/td> 1223K
代理商: L6728ATR
Obsolete
Product(s)
- Obsolete
Product(s)
L6728A
Application details
Figure 6.
Example of type III compensation
Open loop converter singularities:
a)
b)
Compensation network singularities frequencies:
a)
b)
c)
d)
To place the poles and zeroes of the compensation network, the following suggestions may
be followed:
a)
Set the gain RF/RFB in order to obtain the desired closed loop regulator bandwidth
according to the approximated formula (suggested values for RFB is in the range of
some k
Ω):
Gain
[dB]
Log (Freq)
0dB
open loop
EA gain
closed
loop gain
compensation
gain
open loop
converter gain
F
LC
F
ESR
F
Z1 FZ2
F
P1
F
P2
20log (R
F/RFB)
20log (V
IN/ΔVOSC)
F
0dB
F
LC
1
2
π LC
OUT
----------------------------------
=
F
ESR
1
2
π C
OUT
ESR
--------------------------------------------
=
F
Z1
1
2
π R
F
C
F
------------------------------
=
F
Z2
1
2
π R
FB
R
S
+
() C
S
-----------------------------------------------------
=
F
P1
1
2
π R
F
C
F
C
P
C
F
C
P
+
---------------------
--------------------------------------------------
=
F
P2
1
2
π R
S
C
S
-------------------------------
=
R
F
R
FB
----------
F
0dB
F
LC
------------
ΔV
OSC
V
IN
-------------------
=
相關(guān)PDF資料
PDF描述
L6728A SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10
L6728D 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10
L6911C 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6911DTR 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6911E 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6728D 功能描述:電流型 PWM 控制器 SNGL PHASE PWM CONTROLLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
L6728DTR 功能描述:電流型 PWM 控制器 Single-Phase PWM 5V to 12V Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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