1-2-6 High Voltage 3-Phase Brushless Motor Driver ICs
■Internal Block Diagram (One of three phases)
HS
VB
VBB
U,V,W
LS
VB
VCC
UV
Detect
VCC
HO
HS
Drive
Input
Logic
&
Shoot
Through
Prevention
Corcuit
HIN
LIN
HIN
LIN
Level
Shift
UV
Detect
Drive
Corcuit
COM
FO
LO
LS
COM
FO
O.C.
Protect
CFO
HVIC
CFO
■Typical Connection Diagram
8
31
32
7
CBOOT
VB
6
VCC
UV
Detect
HO
Drive
Input
The input pulldown resistor is built in IC (about 100 kΩ).
However, if the input is expected to be unstable or very
fluctuant, it needs to be reinforced with external resistor.
HIN
LIN
5
3
Circuit
Level
Shift
Logic
&
HS
Shoot
Through
Prevention
UV
Detect
Drive
Circuit
COM
FO
4
1
LO
LS
Attach capacitors near IC. Attach a ceramic capacitor in
parallel with the electrolytic capacitor if too much noise is
generated.
O.C.
Protect
33
28
CFO
2
HVIC1
16
15
14
CBOOT
VB
VCC
UV
Detect
HO
Drive
Circuit
Input
Logic
13
11
HIN
LIN
Level
Shift
29
&
M
Shoot
HS
Through
Prevention
UV
Detect
Drive
Circuit
12
9
COM
FO
LO
LS
O.C.
Protect
30
25
CFO
10
24
HVIC2
23
22
CBOOT
VB
VCC
UV
Detect
HO
Drive
Circuit
Input
Logic
21
19
HIN
LIN
Level
Shift
26
27
&
Shoot
HS
Through
Prevention
VFO
UV
Detect
Drive
Circuit
20
17
COM
FO
LO
LS
VBB
RFO
O.C.
Protect
CFO
18
HVIC3
VCC
CN
RS
CFO
ICs
136
ETC [ ETC ]
