lzl1okOK
发表于 2024-9-13 10:07:02
本帖最后由 lzl1okOK 于 2024-9-13 10:30 编辑
DebugLab 发表于 2024-9-7 15:47
串的电阻功耗很大
每个电阻都得1.5W以上感觉功耗太大了
liuzonggong
发表于 2024-9-13 18:39:03
lzl1okOK 发表于 2024-9-13 10:07
每个电阻都得1.5W以上感觉功耗太大了
是的,所以找低成本的电源集成电路。
liuzonggong
发表于 2024-9-13 18:48:18
本帖最后由 liuzonggong 于 2024-9-13 18:50 编辑
jmg 发表于 2024-9-12 09:53
The SM6035 (SOT23) is a Non Isolated Buck Switching regulator, so needs L,D,D,C external parts.
- Q ...
SM6035, is more cheap for my designe. ilike it more.
jkernet
发表于 2024-9-14 00:25:46
这样玩不会是智商税产品吧
jmg
发表于 2024-9-14 06:28:24
liuzonggong 发表于 2024-9-13 18:48
SM6035, is more cheap for my designe. ilike it more.
Yes, the newer parts like bpsemiBP8522x are not as widely sourced, and they will expect a premium for including the two diodes.
Older, external diode parts are more multi-sourced.
More parts like this should be released, as power standby becomes important.
liuzonggong
发表于 2024-9-14 07:45:04
本帖最后由 liuzonggong 于 2024-9-14 08:28 编辑
jmg 发表于 2024-9-14 06:28
Yes, the newer parts like bpsemiBP8522x are not as widely sourced, and they will expect a premi ...
This is a schematic diagram of the power supply that I want to design.
liuzonggong
发表于 2024-9-14 08:19:52
jkernet 发表于 2024-9-14 00:25
这样玩不会是智商税产品吧
向马斯克学习。减低成本,完成任务。
chineseboyzxy
发表于 2024-9-14 09:14:20
311/3.3*5的电流,每个电阻承受的功率1.18W,再加点儿余量,最少不得1.5W的电阻。成本又上去不少。
liuzonggong
发表于 2024-9-14 12:12:24
chineseboyzxy 发表于 2024-9-14 09:14
311/3.3*5的电流,每个电阻承受的功率1.18W,再加点儿余量,最少不得1.5W的电阻。成本又上去不少。 ...
帮忙看看106楼的图,可否。示意图。还要细化。
liuzonggong
发表于 2024-9-23 15:51:24
经过不断搜索找到了一款简单的ac-dc非隔离集成电路。如图。单价0.37元。
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