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参数资料
| 型号： | L6285S |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2 A, PDIP42 |
| 封装： | SDIP-42 |
| 文件页数： | 4/16页 |
| 文件大小： | 4214K |
| 代理商： | L6285S |
The duty cycle DC can be chosen between two
possibilities (High and Low ) than can be defined
externally by the resistors R7, R8 and R9: Fig.5
let well understand how to calculate the dividers
that fix V2 H (wider ton ) and V2 L (wider toff ). It
may be needed to drive stepper motors that re-
quire a higher peak current than told above. In
this case each motor phase requires a particular
application arrangement (see Fig.9b). In Fig.9a all
the protection components are integrated with the
exception of Z1. In Fig.9b the clamp of the volt-
age spikes generated by the stray inductance Ls
is achieved using Transil protection T1 and T2
that works also as additional diodes during cur-
rent recirculation at the phase change. The diode
D1, externally connected, is recommended at the
highest working current levels and/or when the
supplied voltage (plus Back EMF) at the end of
the motor winding is too much unbalanced.
Figure 8: Typical Application Circuit
Figure 9a: Output Configuration as it is obtained
by the Application Circuit
Figure 9b: Output Configuration at Higher Oper-
ating Currents
L6285
12/16
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