SKT672-080-E Datasheet, PDF (17/18 Pages) ON Semiconductor – Stepping Motor Driver

STK672-080-E
Vref - IOH
2.0
Test motor: PK264-02B
1.8 _VCC1=24V
1.6
1.4
1.2
ΔTc - Pd
80
70
60
50
1.0
40
0.8
0.6
0.4
0.2
0
0
0.5
1.0
1.5
2.0
2.5
Motor current, IOH - V
ITF02422
Substrate Temperature Rise Test
60
2W1-2ex
50
40
2ex
30
VCC1 : 24V
20 ^{Test motor : PK264-02B}
Motor current :
IOH :
10 2-phase excitation: 1.5A
2W1-2 phase excitation: 2A
With no heat sink
0
100 ^{2 3 5 7} 1k
2 3 5 7 _10k 2 3 5 7 _100k
CLK frequency, PPS - Hz
ITF02424
30
20
10
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Hybrid IC internal average power dissipation, Pd - W ITF02423
Motor
3.5
Current
I
OH
Derating
Curves
vs.
Operating
Substrate
Temperature
Tc.
CLK _{≥ 200Hz}
3.0
2.5
Hold _mode
2.0
1.5
1.0
Motor voltage: 24V
0.5
Motor resistance (R): 0.4Ω
Inductance (L): 1.2mH
0
0
20
40
60
80
100
120
Operating substrate temprature, Tc - °C ITF02425
Notes
• The current ranges shown above apply when the output voltage is not in the avalanche range.
• The operating substrate temperature Tc values shown above are measured during motor operation. Since Tc varies
with the ambient temperature Ta, the value of IOH, and whether IOH is continuous or intermittent, it must be
measured in an actual operating system.
No.6507-17/18