FAN73892 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
FAN73892 Datasheet PDF : 17 Pages
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Typical Application Diagram
Figure 1. 3-Phase BLDC Motor Drive Application
Internal Block Diagram
2 HIN1
3 HIN2
4 HIN3
5 LIN1
6 LIN2
7 LIN3
10 EN
8 FO
12 Vss
11 RCIN
50K
50K
INPUT NOISE
50K
FILTER
[ tFLTIN=250ns ]
50K
50K SHOOT-THROUGH
PREVENTION
50K
DEAD-TIME
[ DT=300ns ]
150K
ENABLE INPUT
FILTER
[ tFLTEN=250ns ]
UHIN
VDD
ULIN
U Phase Driver
VDD
VHIN
VLIN
VDD
WHIN
WLIN
Fault
VREF
iRCIN
VRCIN,TH = 3.3V
VRCIN,HYS= 0.7V
3.3V
Q
LATCH
R
UVLO
NOISE
CANCELLER
RR
Q
S
UVLO
DELAY
VB1
28
HO1
27
VS1
26
VDD
1
LO1
16
V Phase Driver
COM
13
ISOFT
VB2
24
HO2
23
VS2
22
LO2
15
ISOFT
COM
W Phase Driver
VB3
20
HO3
19
VS3
18
LO3
14
COM
VDD_UVLO
SOFT-OFF
ISOFT
CS_COMP
CS
LEB
9
S
0.5V
© 2011 Fairchild Semiconductor Corporation
FAN73892 • Rev.1.0.2
Figure 2. Functional Block Diagram
2
Protection Circuit
www.fairchildsemi.com
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