ml4423 Microsemi Corporation, ml4423 Datasheet - Page 7

• Manufacturer Part Number: ml4423
• Description: 3-phase Variable Speed Motor Controller
• Manufacturer: Microsemi Corporation

0.1 F
100k
100k
200k
160k
0.1 F
V
R
V
SPEED
SPEED
V
R
MIN
0.1 F
REF
REF
7
8
4
5
6
GND
12V
8V REF
CONTROLLER
26
17
V
CC
SPEED
0.001 F
C
GM1
Note: Use Extreme caution with high voltage AC motor control and drive circuitry.
27
FREQ.
0.47 F
28
SINE
SINE
C
0.001 F
When the motor is spinning at the desired speed, and the speed is rapidly reduced,
the energy stored in the rotation will generate a voltage greater than the +V
and destruction of the power transistors, high side driver, ML4423
controller and the power supply may occur.
12
GM2
C
B
A
0
AMPLITUDE
SINE
SINE
11
10
A
B
F/R
15
CONTROLLER
C
GENERATOR
PWM SINE
PWM
COAST
PWM
14
13
3PH/2PH
18
220pF
CURRENT
UNDER VOLTAGE
LIMIT
DRIVE & SHOOT
PROTECTION
LOCKOUT
THROUGH
OUTPUT
ML4423
5V/12V
SELECT
25
9
R
166k
DT
24
21
22
19
23
20
16
1
2
3
SENSE
SENSE
SENSE
H A
L A
L B
H C
H B
L C
I
SENSE
A
C
B
330pF
1k
+12V
MOTOR
DRIVE
A
R
250m
LIMIT
node,
+12V
DRIVE
B
0.15 F
3
2
+12V
1
A
1k
99k
H
L
INT100
IN
4
IN
PWR
0.15 F
5
15
HV POWER STAGE
7
12,13,14
1k
11
8
99k
+
1 F
10
10
B
100
100
C
500
C
+V
170–400V
MOTOR
49.5k
0.30 F