NCP1392B ON Semiconductor, NCP1392B Datasheet - Page 18

• Manufacturer Part Number: NCP1392B
• Description: High-Voltage Half-Bridge Driver
• Manufacturer: ON Semiconductor

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depicted in block diagram. This logic is constructed in such
a way that the Mlower driver starts to pulse firs after any
driver restart. The bootstrap capacitor is thus charged during
first pulse. A delay is inserted in the lower rail to ensure good
The A and B outputs are delivered by the internal logic, as
DEAD TIME
B
A
Figure 34. The Internal High−Voltage Section of the NCP1392
Trigger
Pulse
from latch
high if OK
Shifter
Level
from PFC
Delay
B
A
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Detect
UV
18
S
R
Delay
matching between these propagating signals. As stated in the
maximum rating section, the floating portion can go up to
600 Vdc and makes the IC perfectly suitable for offline
applications featuring a 400 V PFC front−end stage.
Q
Q
Boot
Hgd
HB
V
Lgd
GND
CC
C
boot
+
D
boot
V
aux
V
bulk