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Numéro de référence | ECN3021 | ||
Description | High Voltage Monolithic IC | ||
Fabricant | Hitachi | ||
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1 Page
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
∗ 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
∗ Speed control for a 3-phase DC brushless motor is available with an external microprocessor.
∗ Bottom arm circuits can be operated in 20kHz chopping frequency of PWM.
Microprocessor
Analog
output
VCC
FG
DM
VSP
VCC(15V)
CB
VB supply
C0
VB
RU
RV
RW
HU HV HW
D2
C2
+-
C+ C-
D1
+
C1
-
CL
VS1
Clock
Charge Pump
FG
Rotating
Direction
Monitor
Comparator
+
-CMP
3-Phase
Distributor
SAW wave
Generator
Clock
CR VTR
RTR
CTR
Top Arm
Driver
Bottom Arm
Driver
Over Current Sense
-
+
Vref
0.5V
GL RS
VS2
GH1
VS
Hall ICs
MU
MV
MW
Motor
GH2
RS
Fig. 1 Block diagram
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PDE-3021-0
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Pages | Pages 10 | ||
Télécharger | [ ECN3021 ] |
No | Description détaillée | Fabricant |
ECN30204 | 3-Phase BLDC Motor Driver IC | Hitachi |
ECN30206 | 3-Phase BLDC Motor Driver IC | Hitachi |
ECN3021 | High Voltage Monolithic IC | Hitachi |
ECN3022 | High Voltage Monolithic IC | Hitachi |
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