FAN7388 Fairchild Semiconductor, FAN7388 Datasheet - Page 12

• Manufacturer Part Number: FAN7388
• Description: The FAN7388 is a monolithic three half-bridge gate-drive IC designed for high-voltage, high-speed driving MOSFETs and IGBTs operating up to +600V
• Manufacturer: Fairchild Semiconductor

FAN7388 • Rev. 1.0.0
© 2008 Fairchild Semiconductor Corporation
Application Information
Switching Time Diagram
Current Flow
Direction
Phase Voltage
Phase Current
Input / Output
HIN / HO1,2,3
LIN / LO1,2,3
V
V
V
I
I
I
W
U
V
S1
S2
S3
Figure 29. 120° Commutation Operation Waveforms for 3-Phase BLDC Motor Application
-30
U
Q5 (HIN3)
V
0
W
Q6 (LIN2)
30
Phase Back EMF
HIN1,2,3
/LIN1,2,3
HO1,2,3
LO1,2,3
U
(Continued)
60
V
Figure 30. Switching Time Definition
W
Q1 (HIN1)
90
50%
t
ON(L)
U
t
ON(H)
120
V
10%
10%
t
MT1
R
90%
W
12
90%
Q2 (LIN3)
150
U
50%
t
OFF(L)
180
V
t
90%
OFF(H)
W
90%
Q3 (HIN2)
t
MT2
F
210
10%
10%
U
240
V
W
Q4 (LIN1)
270
U
Q5 (HIN3)
300
V
www.fairchildsemi.com
W
330
Elec
o