SC4524 Semtech Corporation, SC4524 Datasheet - Page 17

• Manufacturer Part Number: SC4524
• Description: 2A Output 30V Step-Down Switching Regulator
• Manufacturer: Semtech Corporation

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POWER MANAGEMENT
Applications Information
2006 Semtech Corp.
G
G
MA
MA
R
R
5
O
R
R
G
1
1
Figure 11.
R
R
MP
2
2
R
R
R
Gain
2
OUT
2
Bode Plots of Control-to-Ouput, Output-to-Control and the Overall Loop
Gain. Control-to-output transfer function is shown with two poles near
half the switching frequency
R
O
1
C
5
Figure 10. Simplified Control Loop Equivalent Circuit
C6
p
1
V
IN
V
COMP
R5
C5
T
j (
)
R
5
1
RO
1.6M
C
5
Z
1
GMA =
280
GMP = 8
POWER
STAGE
R
-1
OUT
REFERENCE
-
+
n
VOLTAGE
C
1
p
-1
2
FB
1V
Control-to-Output
Transfer Function
C
C
17
S
1
n
.
R
OUT
C11
R1
R2
v
v
COMP
ESR
I
OUT
C1
OUT
C
R OUT
R
V OUT
5
1
C
6
p
3
2
S
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SC4524