1-2-6 High Voltage 3-Phase Brushless Motor Driver ICs
■Internal Block Diagram (One of three phases)
HS
VB
Rb
VBB
U,V,W
LS
VB
Db
VCC
UV
UV
VCC
HO
HS
LD
Detect Detect
Input
Logic
HIN
LIN
Drive
HIN
LIN
Circuit
&
Level
Shift
Shoot
Through
Prevention
COM
FO
COM
FO
Drive
Circuit
O.C.
Protect
Thermal
Detect
RS
OCP
HVIC
■Typical Connection Diagram
Cb
HS1
VB1
Rb
15V
VB
Db
VCC1
VCC
UV
UV
HO
Detect Detect
Ri
Ci
Input
Logic
&
HIN
LIN
HIN1
LIN1
Drive
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.
Circuit
Level
Shift
U
Shoot
Through
Prevention
HS
LD
COM1
FO1
COM
FO
Cp
Drive
Circuit
Attach capacitors near IC. Attach a ceramic
capacitor in parallel with the electrolytic
capacitor if too much noise is generated.
LS1
OCP1
O.C.
Protect
Thermal
Detect
RS
HVIC
Cb
HS2
VB2
Rb
Db
VB
VCC
VCC2
UV
UV
HO
Detect Detect
Input
Logic
HIN
LIN
HIN2
LIN2
Drive
Circuit
&
Level
Shift
V
Shoot
Through
Prevention
M
HS
LD
COM
FO
COM2
FO2
Drive
Circuit
O.C.
Protect
Thermal
Detect
RS
OCP2
LS2
HVIC
Cb
HS2
VB3
Rb
VBB
Db
VB
VCC3
VCC
UV
UV
Detect Detect
HO
HS
LD
Input
Logic
HIN
LIN
HIN3
LIN3
Drive
Circuit
&
Level
Shift
Shoot
Through
Prevention
W
COM
FO
COM3
FO3
INT
Drive
Circuit
CS
Vf(3.3V,5V)
OCP3
Rf
RS
O.C.
Protect
Thermal
Detect
LS3
HVIC
AD
Ro
Cf
Co
RS
COM
ICs
140
ETC [ ETC ]
