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| SI9122 Datasheet, PDF (6/17 Pages) Vishay Siliconix – 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Drivers | |||
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Si9122
Vishay Siliconix
TIMING DIAGRAM FOR MOS DRIVERS
VCC
GND
VCC
GND
VCC
GND
VBST
VMID
GND
PWM
DL
SRL
DH
PWM
DH
VCC
GND
SRH
PWM
DL
SRL
DH
PWM
DH
SRH
tBBM1 tBBM2 tBBM3 tBBM4
DH, LX
SRH
DH, LX
DH, LX
DH
50%
LX
50%
Time
BST = LX + VCC
V LX
VMID
VCC
GND
SRL
www.vishay.com
6
DL
tBBM1
tBBM2
Figure 3.
tBBM3
tBBM4
SRL
VCC
Return to:
GND
Specification Table
Rectification Timing Sequence
Primary MOSFET Drivers
Secondary MOSFET Drivers
Document Number: 71815
S-41944âRev. F, 18-Oct-04
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