如何使用L6205

你好，
 
 
要使用L6205驱动直流电机，您需要使用INX输入来产生PWM信号。建议不要使用ENX，因为在关闭期间关闭功率级（禁用过流保护）并且PWM范围显着降低（系统仅工作在占空比的50％）。
 
建议的设置如下（一个方向）：
IN1X＆lt; - PWM
IN2X＆lt; - HIGH
ENX＆lt; - HIGH
 
在这种情况下，施加到电机的电压为Vmotor = VS x（1 - DC）（PWM占空比的100％强制电机为0V，0％强制VS）。
使用此配置，设备的过流保护始终有效。
 
问候
恩里科



以下为原文





Hello,


For driving a DC motor using the L6205 you need to use the INX inputs to generate the PWM signal. Using the ENX is not recommended because the power stage is turned off during the OFF time (overcurrent protection disabled) and the PWM range is significantly reduced (the system works only up to the 50% of duty-cycle).

The suggested setup is the following (one direction riving):
IN1X <-- PWM
IN2X <-- HIGH
ENX <-- HIGH

In this condition the voltage applied to the motor is Vmotor = VS x (1 - DC) (100% of PWM duty-cycle forces a 0V on the motor and 0% forces the VS).
Using this configuration the overcurrent protection of the device is always active.

Regards
Enrico

以上是非常有帮助的，因为我遇到了同样的问题。如何在“并联连接更高电流”中使用PWM，L6205，AN1762应用笔记的图26？我需要向两个方向驱动电机。
 
 
编辑：我想是从高到低翻转IN2？



以下为原文





The above is very helpful, as I am experiencing these same problems. How can I use PWM in the ''Parallel connnection for higher current'', L6205, Fig 26 of AN1762 App note? I need to drive the motor both directions.


Edit: Just flop IN2 from High to Low I guess?

嗨，
 
 
 建议的配置如下：
 ENA和ENB - ＆gt;启用
 IN1A和IN1B - ＆gt; PWM
 IN2A和IN2B - ＆gt; FW  REV
 
 在这种情况下，更改FW / REV值会改变电机方向。
 注意PWM占空比：当FW  REV为低电平时，100％DC对应最大速度，0％DC停止电机。当FW  REV为高时，DC与速度的关系反转（100％ - >电机停止，0％ - >最大速度）。
 
 问候
 恩里科



以下为原文





Hi,


the suggested configuration is the following:
ENA and ENB --> Enable
IN1A and IN1B --> PWM
IN2A and IN2B --> FWREV

In this case the changing the FW/REV value the motor direction is changed.
Pay attention to the PWM duty-cycle: when FWREV is LOW a 100% DC corresponds to the maximum speed and 0% DC stops the motor. When FWREV is HIGH the DC vs. speed relation is reversed (100% --> motor stopped, 0% --> maximum speed).

Regards
Enrico