
IR2181 ( 4 ) (S) & (PbF)
Functional Block Diagrams
VB
2181
HV
LEVEL
UV
DETECT
PULSE
FILTER
R
R
S
Q
HO
HIN
VSS/COM
LEVEL
SHIFT
PULSE
GENERATOR
SHIFTER
VS
VCC
UV
DETECT
LO
LIN
VSS/COM
LEVEL
SHIFT
DELAY
COM
VB
21814
HV
LEVEL
UV
DETECT
PULSE
FILTER
R
R
S
Q
HO
HIN
VSS/COM
LEVEL
SHIFT
PULSE
GENERATOR
SHIFTER
VS
VCC
UV
DETECT
LO
LIN
VSS/COM
LEVEL
SHIFT
DELAY
COM
VSS
4
www.irf.com