NCP1392B_09 ONSEMI [ON Semiconductor], NCP1392B_09 Datasheet - Page 16

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

Vbulk_OFF
Vbulk_OFF
Vbulk_ON
Vbulk_ON
DRV_EN
DRV_EN
BO_OK
BO_OK
Vbulk
Vbulk
VBO
VBO
Vcc
Vcc
1 V
1 V
Figure 33. BO Input Functionality −V
Figure 34. BO Input Functionality − V
BOdisch
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PFCdelay
bulk2
16
< V
bulk
PFCdelay
The drivers are activated with delay specify by
PFCdelay after Vcc_ON, IBO sing has been
turned OFF by BOdisch time after Vcc_ON, BO
capacitor had enough time to charge
< V
Checking VBO by activating IBO
sink, released after BOdisch time
bulk
bulk1
> V
, PFC Start Follows
bulk1