- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385567 > MC3479 (ON SEMICONDUCTOR) Stepper Motor Driver(步進(jìn)電機(jī)驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | MC3479 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Stepper Motor Driver(步進(jìn)電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | 步進(jìn)電機(jī)驅(qū)動(dòng)器（步進(jìn)電機(jī)驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | MC3479 |
MC3479
http://onsemi.com
9
Figure 8. Power Supply Current
50
I
BS
( A)
I
OD
= 0
10
20
0
60
50
40
30
70
150
200
250
300
350
100
I
Figure 9. Maximum Saturation Voltage
Driver Output Low
I
OD
(mA)
0
100
200
300
0.8
0.6
0.4
0.2
0
V
For example, assume an application where V
M
= 12 V, the
motor requires 200 mA/coil, operating at room temperature
with no heatsink on the IC. From Figure 11, I
BS
is
determined to be 95 A.
R
B
is calculated:
R
B
= (12
0.7) V/95 A
R
B
= 118.9 k
From Figure 8, I
M
(max) is determined to be 22 mA. From
Figure 9, V
OLD
is 0.46 V, and from Figure 10, (V
M
V
OHD
)
is 1.4 volts.
P = (12
0.022) + (2
P = 1.01 W
0.2) (1.4 + 0.46)
T
J
= (1.01 W
T
J
= 77.5
°
C
52
°
C/W) + 25
°
C
This temperature is well below the maximum limit. If the
calculated T
J
had been higher than 150
°
C, a heatsink such
as the Staver Co. V
7 Series, Aavid #5802, or Thermalloy
#6012 could be used to reduce R
JA
. In extreme cases,
forced air cooling should be considered.
The above calculation, and R
JA
, assumes that a ground
plane is provided under the MC3479 (either or both sides of
the PC board) to aid in the heat dissipation. Single nominal
width traces leading from the four ground pins should be
avoided as this will increase T
J
, as well as provide
potentially disruptive ground noise and I
R
drops when
switching the motor current.
Figure 10. Maximum Saturation Voltage
Driver Output High
1.5
2.0
I
OD
(mA)
1.0
0.5
0
0
100
200
300
[
]
O
Figure 11. Bias/Set Current
Output Drive Current
140.00
120.00
100.00
80.00
60.00
40.00
20.00
0.00
0.00
50.00
100.00
150.00
I
OD
(mA)
200.00
250.00
300.00
I
B
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC44BC375 | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375J | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375JD | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375T | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375TD | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC34791 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC 1.25MM 6WAY 制造商:SPC Multicomp 功能描述:CONNECTOR, FPC, 1.25MM, 6WAY |
| MC34793 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC 1.25MM 8WAY 制造商:SPC Multicomp 功能描述:CONNECTOR, FPC, 1.25MM, 8WAY |
| MC34795 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC 1.25MM 8WAY 制造商:SPC Multicomp 功能描述:CONNECTOR, FPC, 1.25MM, 8WAY |
| MC34797 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC 1.25MM 10WAY |
| MC34799 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC 1.25MM 10WAY 制造商:SPC Multicomp 功能描述:CONNECTOR, FPC, 1.25MM, 10WAY |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。