SI9136 Vishay, SI9136 Datasheet - Page 11

• Manufacturer Part Number: SI9136
• Description: Multi-output Power-supply Controller
• Manufacturer: Vishay

Document Number: 70818
S-00583—Rev. C, 03-Apr-00
SLC
REF
V
COMP
Soft-Start
ICSP
ICSN
–
+
REF
20 mV
V
Error
Amplifier
t
–
+
–
+
Error
Amplifier
C/S
Amplifier
Soft-Start
–
+
100 mV
PWMCMP
Pulse
Skipping
Control
Current
Limit
SYNC
Rectifier Control
t
FIGURE 6. PWM Flyback Block Diagram
–
+
–
+
FIGURE 5. Buck Block Diagram
PWM
Comparator
Pulse
Skipping
Control
Current Limit
5/3 ON/OFF_
Control
Logic
Control
ON/OFF
Logic
1X
_
+
BBM
DH
DL
LX_
V
BST_
L
DH
DL
BSTY
LXFY
CS_
FB_
DH
DL
www.vishay.com FaxBack 408-970-5600
FB
5
R
R
Y
X
Vishay Siliconix
FBFY
Internal voltage
divider is only
used on 5-V
output.
DHFY
DLFY
R1
R2
Si9136
11