FAN7387 Datasheet, PDF (2/17 Pages) Fairchild Semiconductor – Self-Oscillated, High-Voltage Gate Driver

Typical Application Diagrams
VDD
C1
VDC
D1
C2
CT
RT1
RDT
Q1
Q2
Frequency
Control
Shutdown
Cb* RT2
1 RCT
2 VDD
3 DT/ SD
4 _GND
VB 8
R1
HO 7
VS 6
R2
LO 5
M1 ^C3
C4
M2
GND
* Note: This capacitor, Cb, is for system stability and must use at least 470nF.
D2
C5
D3
C6
FAN7387 Rev1.0
Figure 1. Typical Application Circuit for SMPS (Self Oscillation Method)
VDD
D1
PWM
Shutdown
R1
R2
Q1
RDT
Cb*
Q2
1 RCT
2 VDD
3 DT/ SD
4 _GND
VB 8
R3
HO 7
VS 6
R4
LO 5
C1
C2
VDC
M1 ^C3
C4
M2
D2
C5
D3
C6
GND
* Note: This capacitor, Cb, is for system stability and must use at least 470nF.
FAN7387 Rev.1.0
Figure 2. Typical Application Circuit for SMPS Using External Signal
© 2008 Fairchild Semiconductor Corporation
FAN7387 Rev. 1.0.0
2
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