MC33033DW ON Semiconductor, MC33033DW Datasheet - Page 14
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MC33033DW
Manufacturer Part Number
MC33033DW
Description
IC CTRLR DC MOTOR BRSHLSS 20SOIC
Manufacturer
ON Semiconductor
Type
Brushless DC Motor Controllerr
Datasheet
1.MC33033DWR2G.pdf
(27 pages)
Specifications of MC33033DW
Applications
DC Motor Controller, Brushless (BLDC), 3 Phase
Number Of Outputs
1
Current - Output
100mA
Voltage - Load
5.9 V ~ 6.5 V
Voltage - Supply
10 V ~ 30 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Operating Supply Voltage
10 V to 30 V
Supply Current
22 mA
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Manufacturer
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Figure 25. Current Waveform Spike Suppression
The addition of the RC filter will eliminate current-limit
instability caused by the leading edge spike on the current
waveform. Resistor R
6
5
2
V
0.001
The totem pole output can furnish negative base current for
enhanced transistor turn-off, with the addition of capacitor C.
C
= 12 V
Figure 29. High Voltage Boost Supply
Figure 27. Bipolar Transistor Drive
1
8
This circuit generates V
MC1455
18 k
S
R
100 mV
100 mV
Q
4
S
should be a low inductance type.
17
16
15
12
17
16
15
12
7
3
Boost
C
C
C
C
for Figure 24.
R
1.0 μ/200 V
V
V
1N5352A
V
M
M
M
+ 8.0
+ 4.0
+ 12
R
S
Boost Current (mA)
0
-
+
*
V
* = MUR115
I
Base Charge
Removal
B
M
20
= 170 V
*
22
MC33033, NCV33033
40
http://onsemi.com
t
V
Boost
60
14
13
Figure 28. Current Sensing Power MOSFETs
Virtually lossless current sensing can be achieved with the im‐
plementation of SENSEFET power switches.
Gnd
Series gate resistor R
by the MOSFET input capacitance and any series wiring induction in the
gate-source circuit. Diode D is required if the negative current into the
Bottom Drive Outputs exceeds 50 mA.
100 mV
Figure 30. Differential Input Speed Controller
Figure 26. MOSFET Drive Precautions
17
16
15
12
V
V
V
Pin 11
A
B
R
S
R
R
g
R
3
1
+ V
will damp any high frequency oscillations caused
4
100 mV
R
A
2
19
10
11
7
9
R 3 ) R 4
R 1 ) R 2
G
M
17
16
15
12
D
D = 1N5819
Then :
K
V Pin9 [
If : SENSEFET = MPT10N10M
Power Ground:
To Input Source Return
S
REF
SENSEFET
EA
D
R 2
R 3
D
D
R
40 k
R
R
g
V
R
–
S
g
g
Pin 9
= 200 Ω , 1/4 W
R
PWM
R 4
R 3
S
@ I pk @ R
r
[ 0.75 I
V
DM(on) ) R S
B
pk
DS(on)