FAN7387 Datasheet, PDF (3/17 Pages) Fairchild Semiconductor – Self-Oscillated, High-Voltage Gate Driver

VDD
RDT1
Q1
Cb*
Shutdown1
GND
D1
CT
1 RCT
VB 8
2 VDD
R3
HO 7
3 DT/ SD
VS 6
R4
RT
4 GND
LO 5
C1
C2
VDC
GND
M1 ^C3
L
M2
HID Lamp
C4
R1
R2
* Note: This capacitor, Cb, is for system stability and must use at least 470nF.
C5 _M1
M2
D4
8 VB
R5
7 HO
6 VS
R6
4 LO
RCT 1
VDD 2
DT/ SD 3
GND 5
GND
RDT2
Q2
Cb*
Shutdown2
FAN7387 Rev.1.0
Figure 3. Typical Application Circuit for Full-Bridge Converter
R1
D5
D1 D3
AC Input
CT
RDT
C3
C1
1 RCT
2 VDD
VB 8
R4
HO 7
D2 D4
3 DT/ SD
VS 6
C2
R2 _RT1
4 GND
R5
LO 5
Q1 _{Q2 RT2}
Cb*
R3
C8
ZD1
* Note: This capacitor, Cb, is for system stability and must use at least 470nF.
M1 ^{C4 D6} _C5
L
C6
M2
D7
R6
C7
R7
Lamp
Over-Voltage Protection
FAN7387 Rev1.0
Figure 4. Typical Application Circuit for Fluorescent Lamp Ballast
© 2008 Fairchild Semiconductor Corporation
FAN7387 Rev. 1.0.0
3
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