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ECN3021SP Datasheet

  • ECN3021SP

  • MOTOR CONTROLLER

  • 9頁

  • ETC

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HIGH-VOLTAGE MONOLITHIC IC
ECN3021
ECN3021 is a single chip three-phase bridge inverter IC which has 6 IGBTs in the circuit.
Especially, it is very suitable for controlling the speed of 3-phase DC brushless motors to which
converted AC200~230V power supplies are applied. Fig. 1 shows the internal block diagram.
Functions
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Integrated charge pump circuit
Integrated free wheel diodes
Integrated PWM circuit
Integrated FG circuit
Integrated over current protection circuit
Integrated rotating direction monitor circuit
Features
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Speed control for a 3-phase DC brushless motor is available with an external microprocessor.
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Bottom arm circuits can be operated in 20kHz chopping frequency of PWM.
RU
D2
VCC(15V)
C0
CB
HU
VB
VB supply
Clock
HV
HW
C+
RV
RW
D1
+
-
VS
C2
+ -
C1
C-
CL
VS1
VS2
VCC
Charge Pump
FG
FG
DM
Rotating
Direction
Monitor
Top Arm
Driver
3-Phase
Distributor
Bottom Arm
Driver
Over Current Sense
Clock
-
+
Vref
0.5V
RS
GH1
GH2
Hall ICs
MU
MV
MW
Microprocessor
Analog
output
VSP
Comparator
+
CMP
-
Motor
SAW wave
Generator
CR
RTR
CTR
VTR
GL
RS
Fig. 1 Block diagram
PDE-3021-0

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