SI9122 Vishay Siliconix, SI9122 Datasheet - Page 6

• Manufacturer Part Number: SI9122
• Description: 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Drivers
• Manufacturer: Vishay Siliconix

Si9122
Vishay Siliconix
www.vishay.com
6
TIMING DIAGRAM FOR MOS DRIVERS
GND
GND
GND
V
V
GND
GND
D
V
V
V
V
BST
MID
H
CC
CC
CC
CC
SR
SR
, L
X
H
L
t
BBM1
PWM
SR
D
D
t
L
H
BBM1
L
t
BBM2
D
H
D
t
, L
BBM3
L
X
PWM
SR
D
H
H
t
t
BBM4
BBM2
Figure 3.
D
H
, L
PWM
X
SR
D
D
H
L
L
t
BBM3
50%
50%
SR
Return to:
D
L
X
PWM
H
L
SR
D
H
H
t
BBM4
Specification Table
Rectification Timing Sequence
Primary MOSFET Drivers
Secondary MOSFET Drivers
BST = L
V L
V
V
GND
V
GND
MID
CC
CC
S-41944—Rev. F, 18-Oct-04
Document Number: 71815
X
X
+ V
CC
Time