IR2153Z
Functional Block Diagram
R
T
V
B
R
+
-
R
R
+
-
R/2
+
-
R/2
LOGIC
DEAD
TIME
DELAY
15.6V
LO
S
Q
Q
V
CC
DEAD
TIME
PULSE
GEN
HV
LEVEL
SHIFT
Q
PULSE
FILTER
R
S
V
S
HO
C
T
UV
DETECT
COM
Lead Definitions
Lead
Symbol Description
R
T
C
T
Oscillator timing resistor input,in phase with HO for normal IC operation
Oscillator timing capacitor input, the oscillator frequency according to the following equation:
f
=
V
B
HO
V
S
V
CC
LO
COM
1
1.4
×
(R
T
+
75
Ω
)
×
C
T
where 75W is the effective impedance of the R
T
output stage
High side floating supply
High side gate drive output
High side floating supply return
Low side and logic fixed supply
Low side gate drive output
Low side return
www.irf.com
5