MC33035DW ON Semiconductor, MC33035DW Datasheet - Page 15

• Manufacturer Part Number: MC33035DW
• Description: IC CTRLR DC MOTOR BRSHLSS 24SOIC
• Manufacturer: ON Semiconductor
• Type: Brushless DC Motor Controllerr

Specifications of MC33035DW

• Applications: DC Motor Controller, Brushless (BLDC)
• 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: 24-SOIC (7.5mm Width)
• Operating Supply Voltage: 10 V to 30 V
• Supply Current: 20 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Control Circuitry Ground (Pin 16) and Current Sense Inverting Input (Pin 15)
must return on separate paths to the Central Input Source Ground.
Virtually lossless current sensing can be achieved with the implementation of
SENSEFET power switches.
16
Figure 31. Differential Input Speed Controller
Figure 29. Current Sensing Power MOSFETs
Gnd
V
V
V
Pin 13
A
B
100 mV
R
R
R
3
1
+ V
4
21
20
19
9
15
R
A
2
12
13
11
8
7
R 3 ) R 4
R 1 ) R 2
R
S
REF
EA
R 2
R 3
G
25 μA
M
*
D
PWM
K
Then : V
R 4
R 3
V
If: SENSEFET = MPT10N10M
Power Ground:
To Input Source Return
S
SENSEFET
Pin 9
V
R
B
S
[
= 200 Ω, 1/4 W
Pin 9
R
S
≈ 0.75 I
r
@ I
DM(on)
MC33035, NCV33035
pk
@ R
http://onsemi.com
pk
) R
DS(on)
S
15
Resistor R
controls the deceleration. The values of R
times greater than the speed set potentiometer to minimize time constant
variations with different speed settings.
V
Figure 32. Controlled Acceleration/Deceleration
6
5
2
CC
0.001
= 12 V
1
8
Increase
Speed
This circuit generates V
1
Figure 30. High Voltage Boost Supply
with capacitor C sets the acceleration time constant while R
MC1555
18 k
R
S
Q
4
R
R
Enable
2
1
C
7
3
Boost
* = MUR115
12
13
11
for Figure 25.
8
7
1N5352A
V
V
V
1.0/200 V
M
M
M
1
+ 8.0
+ 4.0
+ 12
and R
0
2
REF
V
should be at least ten
Boost Current (mA)
M
*
= 170 V
EA
20
25 μA
*
22
PWM
40
V
Boost
60
2