參數(shù)資料
型號: L6911D
廠商: 意法半導(dǎo)體
英文描述: 5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
中文描述: 5位可編程降壓控制器采用同步整流
文件頁數(shù): 14/17頁
文件大小: 233K
代理商: L6911D
L6911D
14/17
Figure 9. Voltage regulation with droop function block scheme
It results:
Because in the interested range |Gloop|>>1.
To obtain a flat shape, the relationship considered will naturally follow.
Application Idea: 1.100V to 1.850V / 25A
Figure 10 shows an application schematic for a 1.100V to 1.850V conversion with 25A of current capability.
Since the device's high gate drive, more than one mosfet for both high side and low side can be used: three
STS11NF30L (30V, 9mW typ @ Vgs=10V) mosfet are suggested for high side while four of them are suggested
as low side switch.
Figure 10. Schematic Circuit
Av(s)
R(s)
1
Vout
Vcomp
Iout
d
s
L
s
OUT
R
τ
τ
+
+
1
Z
OUT
V
I
LOAD
---------------
R
d
1
1
L
s
τ
d
+
-----+
G
G
LOOP
+
1
----------------------------
R
OUT
1
1
L
s
τ
d
+
-----+
=
=
=
L2
L1
R7
R8
R9
C17
C1-3
C23
C4-9
Q4,Q5,Q6
Q1,Q2, Q3
D2
C17
F1
16
17
13
14
2
4
5
6
7
8
20
U1
L6911D
+5 VIN
+12Vcc
VOUTCORE
Vss
10
15
9
3
18
11
19
12
1
VCC
GND
VID0
VID1
VID2
VID3
VID4
OSC
SS
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VSEN
VFB
COMP
R3
R4
R5
R2
C18
C19
C20
VID0
VID1
VID2
VID3
VID25mV
C24
D1
R6
R1
OVP
R10
C16
PWRGD
R15
R14
R13
C21-22
BOOT
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