FAN7388 View Datasheet(PDF) - Fairchild Semiconductor
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FAN7388 Datasheet PDF : 14 Pages
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Typical Application Circuit
+15V
UU
UL
3-Phase VU
BLDC Motor
Controller VL
WU
WL
1 HIN1
2 LIN1
3 HIN2
4 LIN2
5 HIN3
6 LIN3
7 LO3
8 VS3
9 HO3
10 VB3
VB1 20
HO1 19
VS1 18
LO1 17
VB2 16
HO2 15
VS2 14
LO2 13
VDD 12
GND 11
Up to 600V
VS1 Q1
Q3
Q1
Q3
Q5 VS1
Q5
IU
3-Phase Inverter
VS2
VS2
IV
Q4
Q6
Q2
VS3
IW
Q4
Q6
Q2
VS3
U
V
W
Figure 1. 3-Phase BLDC Motor Drive Application
Internal Block Diagram
HIN1
HIN2
HIN3
LIN1
LIN2
LIN3
SCHMITT
TRIGGER INPUT
SHOOT-THOUGH
PREVENTION
CONTROL LOGIC
UHIN
UVLO
NOISE
CANCELLER
RR
Q
S
VDD_UVLO
ULIN
VDD
U Phase Driver
UVLO
DELAY
VDD
VHIN
V Phase Driver
VLIN
VDD
WHIN
W Phase Driver
WLIN
FAN7388 Rev.00
VB1
HO1
VS1
VDD
LO1
GND
VB2
HO2
VS2
LO2
VB3
HO3
VS3
LO3
© 2008 Fairchild Semiconductor Corporation
FAN7388 • Rev.1.0.0
Figure 2. Functional Block Diagram
2
FAN7388 Rev.01
www.fairchildsemi.com
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