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SI-7500 の電気的特性と機能

SI-7500のメーカーはSanken electricです、この部品の機能は「5-phase Stepper Motor Star Connection Unipolar Driver IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 SI-7500
部品説明 5-phase Stepper Motor Star Connection Unipolar Driver IC
メーカ Sanken electric
ロゴ Sanken electric ロゴ 




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SI-7500 Datasheet, SI-7500 PDF,ピン配置, 機能
5-phase Stepper Motor Star Connection Unipolar Driver IC
SI-7500A
s Ratings
Absolute
maximum
rating
Type No.
SI-7500A
Supply voltage
(V)
VCC
Vb
40 8
Output
current
(A)
Io
1.2
Junction
temperature
(°C)
Tj
+125
Operating
ambient
temperature (°C)
Top
–20 to +80
(Ta = 25°C)
Storage
temperature
(°C)
Tstg
–30 to +100
s Characteristics
Electrical
charac-
teristics
Type No.
SI-7500A
Operating supply voltage Output current Power down
Ratio
(V)
(mA/ø)
(%)
VCC Vb
IO IOPD/IO
min typ max min typ max min typ max min typ max
17 24 30 4.5 5 5.5 200 750 1000 35 50 100
Vb input
current
(mA)
Ib
max
15
External
zener diode
breakdown
voltage
(V)
*Input voltage
(V)
*Input
current
(mA)
VZ VIH1 VIH2 VIL IIH1 IIH2
min max max max max max max
VCC
x1.5
50
3.9 1.3
0.6 0.21 0.22
Trigger
pulse
voltage
(V)
Vtrig
min max
4.0 Vb
(Ta = 25°C)
Trigger
pulse
time
Trigger
pulse
frequency
(µs)
Ttrig
min typ
(kHz)
Ftrig
typ max
1.0 2.0 20 25
s Block diagram
Variable current
resistor
Rx
Trigger pulse
generator
circuit
Excitation signal
2-3 phase excitation
Auxiliary power supply Vb
Reference
voltage
Comparator
amplifier
Excitation signal
amplifier
Main power
supply VCC
Zener diode for
canceling counter EMF
ZD
Current
controller
Counter EMF
Canceller
M
* Input voltage and input current
conditions
VIH1 : Vb = 5V, Q1 to Q5ON
RX = , IIN = 0.2mA
VIH2 : Vb = 5V, Q1 to Q5OFF,
IIN = 0.22mA
IIH1 : Vb = 5V, Q1 to Q5ON,
VIN = 3.7V
IIH2 : Vb = 5V, Q1 to Q5OFF,
VIN = 0.9V
SI-7500A
Current detection
resistor Rs
s Equivalent circuit diagram
w r i t o !2 !5 !3 !6 !9
q
@0
D11
D6
u
R46
Q6 Q7
R1 R6
R36
D1 Q11
R41
R37
R7 R2
R42 Q12 D2
MIC1
R11
R12
D12 D13
D7 D8
Q8
R3 R8
R38
D3 Q13
R43
R13
Q1 R16
R17 Q2
Q3 R18
Q9
R39
R44
R9 R4
Q14 D4
R14
D14 D15
D9 D10
Q10
R5 R10
R40
D5 Q15 R45
R15 MIC3
R19 Q4
Q5 R20
R47
!8
R21
R26 R31
R22
R32
R27
R23
R28
R24
R34
R29
R25
R30 R35
e
y !0
!1 !4 !7
43

1 Page





SI-7500 pdf, ピン配列
SI-7500A
Application Note
s Determining the output current IO (motor coil current)
The main elements that determine the output current are
Current detection resistor Rs, Supply voltage Vb, and Vari-
able current resistor RX.
Fig. A
(1) Normal mode
To operate a motor at maximum current level, set RX to
infinity (open).
From Fig. A, when the maximum output current ripple is
designated as IOH, its value will be,
IOH =
VRSH
RS
....................................................... [A]
VRSH can be computed as follows:
VRSH = 0.2 Vb + 0.213 (center value) .............. [B]
From equations [A] and [B], the output current IOH can
be computed as follows:
I
IOH = RS (0.2 Vb + 0.213)
The relationship between IOH and RS is shown in Fig. B.
(2) Power down mode
When an external resistor RX is connected, VRSH changes
as shown in the Fig. B even when RS is retained. Obtain
the power down output current IOHPD from Fig. B and
equation [A].
Fig. B
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
IOH
Waveform of output current
VRSH Max. (Vb = 5.0V)
VRSH Min. (Vb = 5.0V)
Vb + 0.1
VRSH(max) = 4.69 + 1.92 + 0.2 (V)
Rx
Vb + 0.09
VRSH(min) = 5.25 + 2.06 + 0.15 (V)
Rx
(Rx : k)
1 2 3 4
External resistor Rx (k)
s Thermal design
Obtain the internal power dissipation that corresponds to the output current to be required from Fig. C, multiply this by three,
and determine the size of the heatsink from the derating curve in Fig. D. The derating curve is based on junction
temperature of 125°C. However, make some allowance so that Tc is 85°C or less and then select the proper heatsink size.
Fig. C SI-7500A Internal power dissipation per phase PD
vs. Output current IO
Fig. D SI-7500A Derating curve
6
Motor : PH566-B
Vb = 5V
Holding mode
5
(Typical
value)
4
3
VCC = 30V
24V
2 20V
1
0
0 0.2 0.4 0.6 0.8 1.0 1.2
Output current lo (A)
20
150 × 100
100 × 100
15
50 × 100
10
Without
heatsink
5
Heatsink : Aluminum
Thickness : 2 mm
0
0 20 40 60 80
Ambient temperature Ta (°C)
45


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共有リンク

Link :


部品番号部品説明メーカ
SI-7500

5-phase Stepper Motor Star Connection Unipolar Driver IC

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SI-7500A

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5-Phase Stepper Motor Driver ICs

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