A DIY DC to DC negative pressure module

btty038

A DIY DC to DC negative pressure module [Copy link]

 

This module is made of integrated block LTC3863. The specifications and size are very small, only the size of one RMB yuan. 1. This is the introduction of some chip materials: 2. Chip recommended circuit: 3. The physical PCB of my DIY is out. "I just arrived today and started working on it non-stop". The actual size of the circuit in the picture above is as big as the first section of the thumb. It is absolutely original. 4. After the assembly is completed, the oscilloscope is not used to measure the wave, but the overall effect is out. GOOD You can take a look at the output effect. Is it very obvious? This content is original by btty038, a netizen of EEWORLD forum. If you need to reprint or use it for commercial purposes, you need to obtain the author's consent and indicate the source

maychang

Why don't you post the power technology page?

btty038

This is the power supply, the DC-DC positive voltage to negative voltage application circuit, very useful in the equipment system,,,,

okhxyyo

The forum has a special power section

btty038

okhxyyo posted on 2018-12-3 22:06 The forum has a special power supply section

I didn't pay attention and thought this belonged to it. Pay attention next time. Pay attention next time. It can't be adjusted. Can you give me some suggestions? I have the same problem. I can't take screenshots. Is there any request? I posted it in the wrong place. Can you move it?

btty038

maychang posted on 2018-12-3 21:21 Why don't you post on the power technology section?

I made a mistake. There is a special power section. You can go there and have a look. If you are looking for something related to power supply, haha, I am new here and need to get familiar with the environment.

whuer

Haha, the chip is a good chip, but the price is too high to use

okhxyyo

btty038 posted on 2018-12-3 22:11 I didn't pay attention, and thought this belonged to this. Next time, pay attention. It can't be adjusted. Can you give me some suggestions? There are also similar ones...

Currently, the administrator and the corresponding section moderator need to adjust. After the revision, the permission will be opened to allow the host to adjust it himself

btty038

okhxyyo posted on 2018-12-4 06:48 Currently, the administrator and the corresponding forum moderator need to make adjustments. After the revision, the permissions will be opened to allow the host to make adjustments themselves

OK, looking forward to it

btty038

whuer posted on 2018-12-3 23:51 Haha, the chip is a good chip, but the price is too high to afford it

Quality is the first priority. At first, I chose MAX660, and some conventional LDOs, but found that the current carrying capacity was too low, so I chose this one again.

okhxyyo

btty038 posted on 2018-12-3 22:16 I made a mistake. There is a special power supply section. You can go there and have a look. If you are looking for something related to power supply, haha, I am a newcomer, and I still need...

What do you mean by not being able to take screenshots? I don't understand this

btty038

okhxyyo posted on 2018-12-4 08:00 What do you mean by not being able to take screenshots? I don't understand this

For example, when replying, you can take a screenshot of part of the image as an answer to reply to the other party, and add a combination key to do that. Is this possible?

曹伟1993

The product is good, but the price is a bit ~~~~~~. I have used it, but later I didn't use it when I bought it in bulk. Sometimes it's not just the quality that needs to be considered, there are other things to consider.

btty038

Cao Wei 1993 posted on 2018-12-4 09:08 The product is good, but the price is a bit ~~~~~~. I have used it, but later I didn't use it when I bought it in bulk. Sometimes, it's not just the quality that matters, but also its...

okhxyyo

btty038 posted on 2018-12-4 08:12 For example, when replying, you can capture part of the picture as the answer and reply to the other party, just add a combination key, that's it...

Currently, the pictures in the post still need to be uploaded through the picture button before they can be posted. After the revision, we will change the editor and it should be possible to copy and paste directly.

whuer

How many V and A do you want to output? Is there any other cheap and reliable solution?

zhuyebb

Come on, we all believe in you.

qwqwqw2088

Lingte is now a company with ADI. LTC3863 is a good chip that can produce negative pressure. The price of big brands is not cheap.

btty038

qwqwqw2088 posted on 2018-12-4 15:58 Lingte is now a company with ADI. LTC3863, this negative pressure chip is good, and the price of big brands is not cheap

I have been using this chip for negative pressure for the past two years, and I haven't looked at other ones. I used a lot of others before, but I haven't decided on this one since I started using it. If the cost allows, it's still okay. Others are another matter.

btty038

whuer posted on 2018-12-4 10:46 How many V and A do you want to output? Is there any other cheap and reliable solution?

Just -5V 1A