SI9140DQ VISHAY [Vishay Siliconix], SI9140DQ Datasheet - Page 8

• Manufacturer Part Number: SI9140DQ
• Description: MP Controller For High Performance Process Power Supplies
• Manufacturer: VISHAY [Vishay Siliconix]

Si9140
Vishay Siliconix
www.vishay.com
8
FUNCTIONAL BLOCK DIAGRAM
TIMING WAVEFORMS
ENABLE
V
COMP
D
D
UVLO
ENABLE
S
R
V
COMP
COSC
C
R
MON
1.5 V
V
OSC
OSC
SET
5 V
0 V
1 V
FB
DD
NI
V
UVLO
t
BBM
+
−
Error Amp
UVLO
V
REF
+
−
Oscillator
1.5-V Reference
Generator
+
−
Control
Logic
BBM
and
V
REF
V
UVLO
Driver
Driver
V
S
P
GND
V
P
S
GND
S-40699—Rev. H, 19-Apr-04
Document Number: 70026
V
GND
V
D
P
D
V
REF
S
S
GND
R
GOOD