0.1µF
12V
A
C
0.1µF
VCC
26
0.47µF
C0
12
SINEA
10
CPWM
13
220pF
VREF 7
RREF
8
200kΩ
8V REF
SINEA
PWM
GENERATOR
100kΩ
VSPEED 5
0.1µF
RSPEED 6
160kΩ
SPEED
FREQ.
CONTROLLER
AMPLITUDE
PWM SINE
CONTROLLER
100kΩ
VMIN
4
SINEB
ML4423
UNDER VOLTAGE
LOCKOUT
OUTPUT
DRIVE & SHOOT
THROUGH
PROTECTION
1 SENSEA
2 SENSEC
3 SENSEB
0.15µF
HA
24
LA
21
22 H B
LB
19
23 H C
LC
20
+12V
A
DRIVE +12V
B
DRIVE
17
27
GND
CGM1
0.001µF
28
11 15
CGM2 SINEB F/R
0.001µF
CURRENT
LIMIT
16 ISENSE
1kΩ
14
18
COAST 3PH/2PH
25 9
5V/12V RDT
SELECT
166kΩ
330pF
RLIMIT
250mΩ
99kΩ
0.15µF 99kΩ
1kΩ
1kΩ
B
49.5kΩ
500Ω
0.30µF
+VMOTOR
170–400V
+12V
1
2 HIN
15
11
10Ω
C
+
1µF
100Ω
PWR 12,13,14
INT100
3
LIN
8
457
10Ω
100Ω
Note: Use Extreme caution with high voltage AC motor control and drive circuitry.
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 +VMOTOR node,
and destruction of the power transistors, high side driver, ML4423
controller and the power supply may occur.
HV POWER STAGE