NCP1392B_09 ONSEMI [ON Semiconductor], NCP1392B_09 Datasheet - Page 15

• Manufacturer Part Number: NCP1392B_09
• Description: High-Voltage Half-Bridge Driver with Inbuiltc Oscillator
• Manufacturer: ONSEMI [ON Semiconductor]

any controller restart to let the BO input voltage stabilize
(there can be connected big capacitor to the BO input and the
IBO is only 18.2 mA so it will take some time to discharge).
Once the BOdisch time one shoot pulse ends the BO
The IBO current sink is turned ON for BOdisch time after
DRV_EN
Vbulk_OFF
Vbulk_ON
BO_OK
Vbulk
VBO
Vcc
1 V
Figure 31. Simulation Results for 350/250 ON/OFF Brown−Out Levels
Figure 32. BO Input Functionality − V
http://onsemi.com
< BOdisch
15
comparator is supposed to either hold the I
ON (if the bulk voltage level is not sufficient) or let it turned
OFF (if the bulk voltage is higher than V
BO input works.
IBO is turned ON after Vcc_ON by
internal logic (for BOdisch time)
See Figures 10 − 13 for better understanding on how the
bulk2
< V
bulk
< V
bulk1
bulk1
BO
).
sink turned