FAN7080_12 Datasheet, PDF (6/17 Pages) Fairchild Semiconductor – Half Bridge Gate Driver

Typical Application Circuit
VCC
Up to 600V
IN
R1 VDT
SHUTDOWN
/DEAD TIME
R2
1
VCC
2
IN
VB ⁸
HO
7
3
SD/DT ^VS
6
4 _COM
LO ⁵
To Load
VDT = Vdd*R2 / (R1+R2). Vdd is output voltage of Microcontroller.
The operating range that allows a VDT range of 1.2~3.3V.
When pulled lower than VDT [Typ. 0.5V] the device is shutdown.
Care must be taken to avoid below threshold spikes on pin 3 that can cause undesired shut down of the IC.
For this reason the connection of the components between pin 3 and ground has to be as short as possible.
And a capacitor (Typ 0.02uF )between pin3 and COM can prevent this spike. This pin can not be left
floating for the same reason.
©2012 Fairchild Semiconductor Corporation
6
FAN7080_GF085 Rev. 1.0.1
www.fairchildsemi.com