What is a good way to convert PWM to 0-10V?

ckf茉莉花

What is a good way to convert PWM to 0-10V? [Copy link]

What is a good way to convert PWM to 0-10V? The method of using filter and op amp is too slow to respond.

qwqwqw2088

Use DAC output first, op amp should be indispensable Is the response too slow? Is the PWM frequency a bit high, or the output ripple is large?

qwqwqw2088

You can refer to https://e2echina.ti.com/question ... gement/f/24/t/79773

topwon

Since you know APC has GP9101, you should also know PAC has GP8101, right? Put the specification sheet here, don't hide it.

ckf茉莉花

topwon posted on 2019-6-3 11:48 Since you know that APC has GP9101, you should also know that PAC has GP8101? Put the specification sheet up, don't hide it.

It seems that you are also paying attention to this product. I went to Keyi Electronics to consult, and it seems that the GP8101 product has not been released yet. So I want to ask if we have any other good solutions~~

ckf茉莉花

qwqwqw2088 posted on 2019-6-3 11:36 Use DAC output first, the op amp should be indispensable. Is the response too slow? Is the PWM frequency a bit high, or the output ripple is large

Is the DAC implemented by RC filtering? This method has a relatively large delay. My PWM is 1KHz.

topwon

ckf茉莉花发表于2019-6-3 14:36 Is DAC implemented by RC filtering? This method has a large delay. My PWM is 1KHz.

Why can't the PWM frequency be increased? In this way, the RC value can be reduced, and the response speed will be faster.

ckf茉莉花

GP8101 does work and looks pretty neat.