52810 How to set PWM output current

[Zhang|]

Hello,

I was using app_pwm to drive the buzzer and found that the output current was very high, reaching more than 160 ma.

Here are my pwm parameter Settings: APP_PWM_DEFAULT_CONFIG_1CH(250, BUZZER_PIN); // 250 --4KHZ BUZZER_PIN -- 28 app_pwm_channel_duty_set(&Buzzer_function, 0, 50);

How do I reduce its output, or if I need to switch to <low_power_pwm> Or <nrf_drv_pwm>?

[Zhang|]

I think I found the problem. It seems to be due to the hardware circuit. I used the audion to amplify the square wave signal. This may be the cause of the excessive current. Because when I use pwm to drive the led, the current is only about 6ma.

[Simonr]

Glad to hear that! 6mA sounds much more reasonable than 160 indeed!

Best regards,

Simon