SLA7029 Просмотр технического описания (PDF) - Sanken Electric co.,ltd.
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SLA7029 Datasheet PDF : 7 Pages
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2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
sThermal Design
An outline of the method for calculating heat dissipation is shown below.
(1)Obtain the value of PH that corresponds to the motor coil
current IO from Fig. 7 "Heat dissipation per phase PH vs. Out-
put current IO."
Fig. 7 Heat dissipation per phase PH vs. Output current IO
SLA7022MU, ASMA7022MU
1.2
1
0.8
0.6
VCC
=44V
36V
24V
Motor : 23LM-C202
Holding mode
15V
0.4
0.2
0
0
0.2
0.4
0.6
0.8
1.0
Output current IO (A)
Fig. 8 Temperature rise
SLA7000M series
150
∆Tj
100
∆TC
Natural cooling
Without heatsink
50
(2) The power dissipation Pdiss is obtained using the following formula.
2-phase excitation: Pdiss ≅ 2PH+0.015×VS (W)
1-2 phase excitation: Pdiss ≅ 3 PH+0.015×VS (W)
2
(3) Obtain the temperature rise that corresponds to the calcu-
lated value of Pdiss from Fig. 8 "Temperature rise."
SLA7029M, SMA7029M
1.2
1.0
0.8
36V
0.6
VCC =44V
Motor : 23LM-C004
15V Holding mode
0.4
24V
0.2
00
0.2 0.4 0.6 0.8 1.0
Output current IO (A)
SMA7000M series
150
∆Tj
100
∆TC Natural cooling
Without heatsink
50
0
0
1
2
3
4
5
Total Power (W)
Thermal characteristics
SLA7022MU
35
30
25
Without heatsink
Natural cooling
20
TC ( 4 pin)
15
Motor : PH265-01B
Motor current IO=0.8A
10
Ta=25°C
VCC=24V, VS=24V
5
2-phase excitation
0
200
500
1K
Response frequency (pps)
SMA7022MU
35
30
25
20
Without heatsink
Natural cooling
TC ( 4 pin)
15
Motor : PH265-01B
Motor current IO=0.8A
10
Ta=25°C
VCC=24V, VS=24V
5
2-phase excitation
0
200
500
1K
Response frequency (pps)
10 SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
0
0
1
2
3
4
Total Power (W)
SLA7029M
30
25
Without heatsink
Natural cooling
20
TC ( 4 pin)
15
Motor : PH265-01B
10
Motor current IO=0.8A
Ta=25°C
VCC=24V, VS=24V
5
2-phase excitation
0
200
500
1K
Response frequency (pps)
SMA7029MU
30
25
Without heatsink
Natural cooling
20
TC ( 4 pin)
15
Motor : PH265-01B
Motor current IO=0.8A
10
Ta=25°C
VCC=24V, VS=24V
5
2-phase excitation
0
200
500
1K
Response frequency (pps)
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