Can such a demand be met?

ena

Can such a demand be met? [Copy link]

 

Charging module, input DC24V-100V, output 3.5V to 4.5V controllable, output current controllable, isolated, volume 30*25*13mm, can be made smaller and better, minimum power 5W, can be made larger and better, pin header installation method, unlimited control method, charging mode constant current and constant voltage.

qwqwqw2088

That is to say, DCDC conversion

30*25*13mm is so specific, it is small enough

DC24V-100V input, charging 4.2V lithium battery, the voltage difference is relatively large

There may not be such a high voltage difference to convert to 4.2v charging chip at once

maychang

The electrical requirements are easy to achieve, but the size requirements may be more difficult, especially the 13mm height requirement.

ena

maychang posted on 2021-4-23 19:44 The electrical requirements are easy to achieve, but the size requirements are probably more difficult, especially the 13mm height.

Is there a specific circuit for reference? I am still communicating with you about the size.

huo_hu

Controllable... these two words can be deep or shallow, how can they be controlled?

The same is true for isolation. Isolation of 500V is different from isolation of 1500V.

The size will be considered last. If you squeeze it, you can always find it.

There is another conversion efficiency that has not been mentioned.

yubinwu

Apart from the size, isn't this just a lithium battery charger?

ena

huo_hu posted on 2021-4-25 08:36 Controllable... these two words can be deep or shallow, how to control isolation is also different, isolating 500V and isolating 1500V is different. Size is something I'll talk about last...

The conversion efficiency is required to be above 93%

Is there any reference circuit? I don't know much about this.

ena

yubinwu posted on 2021-4-25 13:23 Apart from the size, isn't this just a lithium battery charger?

Oh, you’ve never come across any reference circuits before?

huo_hu

ena posted on 2021-4-26 08:24 Is there any reference circuit for the conversion efficiency requirement of more than 93%? I don’t know much about this

It's hard to find a suitable one. If you supply 24~100V, a lot of them will be passed.

ena

huo_hu posted on 2021-4-26 09:25 It is difficult to find such a suitable one. If you supply 24~100V, a large number of them will be passed

There should be.

huo_hu

ena posted on 2021-4-26 09:42 There should be one

Why is the power supply environment so bad? Are you using photovoltaic panels?