ST1S14 STMicroelectronics, ST1S14 Datasheet - Page 17

• Manufacturer Part Number: ST1S14
• Description: Up to 3 A step down switching regulator
• Manufacturer: STMicroelectronics

ST1S14
6.3
Equation 9
Equation 10
whereas the zero is defined as:
Equation 11
The embedded compensation network is R
considered negligible, so the singularities are:
Equation 12
Voltage divider
The contribution of a simple voltage divider is:
Equation 13
Figure 11. Leading network example
f
Z
=
3 77 kHz
,
Doc ID 17977 Rev 1
f
P HF
1
7
5
3
BOOT
VIN
EN2
EN1
G
F
f
f
P LF
=
Z
P LF
DIV
--------------------------------------------------- -
2 π R
=
GND
6
s ( )
⋅ ⋅
PGOOD
=
---------------------------------
2 π R
=
⋅
C
SW
--------------------------------- -
2 π R
3 01 Hz
FB
=
=200K, C
,
⋅ ⋅
⋅
c
------------------- -
R
8
2
4
1
⋅
1
1
c
(
R
1
+
C
⋅
2
0
C
0
R
⋅
c
+
2
C
C
P
c
R2
R2
small signal
power plane
=24pF, C
p
)
f
R1
R1
CR1
CR1
P HF
=
33 16 kHz
C
=211pF and C
,
Closing the loop
O
can be
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