NCP1392B_09 Datasheet, PDF (2/21 Pages) ON Semiconductor – High-Voltage Half-Bridge Driver with Inbuiltc Oscillator

NCP1392B, NCP1392D
Rbo1
Dboot
M1
Cboot
AC
OUTPUT _{PFC FRONT STAGE}
+
VCC Vboot
Rt Mupper
Cbulk
Bo
HB
GND Mlower
M2
Rbo2
NCP1392
Rf
Rfstart
Rfmax
CSS
DC
OUTPUT
+
Figure 1. Typical Application Example
PIN FUNCTION DESCRIPTION
Pin # Pin Name
Function
1
V_CC
2
Rt
Supplies the Driver
Timing Resistor
3
BO
Brown−Out
4
GND
IC Ground
5
Mlower
Low−Side Driver Output
6
HB
Half−Bridge Connection
7
Mupper
High−Side Driver Output
8
Vboot
Bootstrap Pin
Pin Description
The driver accepts up to 16 V (given by internal zener clamp)
Connecting a resistor between this pin and GND, sets the operating frequency
Detects low input voltage conditions. When brought above Vref_EN, it stops the
driver. Operation is restored (without any delay) when BO pin voltage drops
100 mV below Vref_EN.
Drives the lower side MOSFET
Connects to the half−bridge output
Drives the higher side MOSFET
The floating supply terminal for the upper stage
http://onsemi.com
2