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參數(shù)資料
| 型號： | UPD168116AK9-9B4-A |
| 廠商： | NEC Corp. |
| 英文描述： | 7-CHANNEL H-BRIDGE DRIVER WITH A MICRO STEP FUNCTION SUPPORTING PULSE INPUT |
| 中文描述： | 7通道H -橋甲微步支脈沖輸入功能驅(qū)動(dòng)程序 |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 256K |
| 代理商： | UPD168116AK9-9B4-A |
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Data Sheet S16967EJ1V0DS
15
μ
PD168116A
Figure 8
1. Concept of Micro Step Drive Operation
A
M
+
8.4 Output Enable (OE) Pin
The OE
1
(OE
2
) pin can be used to forcibly stop pulse output of ch1 and ch2 (or ch3 and ch4) .
When OE
1
(OE
2
) = L, the output is forcibly made to go into Hi-Z. Because the internal information is held, however,
the motor position information is recorded unless reset is performed.
To drive a motor, make sure that OE
1
(OE
2
) = H.
8.5 MOB Output
In the micro step drive mode, L is output from the MOB
1
(MOB
2
) pin when the current of ch1 (ch3) or ch2 (ch4) is
±100%.
In the 2-phase excitation or 1-2 phase excitation drive mode, L is output when the current of ch1 and ch2 is +100%.
By monitoring the MOB output, the excitation position of the stepping motor can be checked. When OE
1
(OE
2
) = L,
MOB
1
(MOB
2
) = Hi-Z.
8.6 Current Detection Resistor Connection (FB) Pin
(1) ch1 to ch4
The current detection resistor is connected when current driving is necessary. It is used for micro step driving and
solenoid driving.
The current that flows into the output is {500 mV (reference voltage) /FB pin resistance x 1000}.
Example)
Where FB = 4.7 k
Output current = 500 (mV) /4.7 (k
) x 1000
106 (mA)
This means constant current driving of about 106 mA.
When current driving is not performed, connect the FB pin to GND.
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