obsidian-notes/电源/拆机模块/dcdc小模块.md
CSSC-WORK\murmur 3e6078442b init version
2024-04-15 11:19:57 +08:00

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---
title: dcdc小模块
updated: 2022-08-08 09:00:52Z
created: 2022-05-07 10:02:34Z
---
# MAX15046模块
/5RMB默认输出5v测试6A无压力。输出需接反馈电容470uF不然不稳压。
V=0.59*1+R1/R2
12输入
34
56输出与FB间串联电阻为120k。FB到地电阻为16k
7R1调谐。串电阻至FB阻抗约3.72k。悬空时输出5V6-7间串多圈可调电位器可调谐输出电压。可数字调压见 [电阻调压改数字调压](../电阻调压改数字调压.md)
8使能默认高
# TPS40057模块
1/8RMB默认输出3.3v测试6A无压力。~~输出需接反馈电容,不然不稳压。(板载已含)~~
V=0.7*1+R1/R2
L面为正
124 输出。串33R+15k至FB
3R1调谐。串电阻至FB3-FB阻抗R1=3.2R+15k。3-4间串多圈可调电位器可调谐输出电压
56
78输入
10R2调谐。默认R2=4k10-FB串联阻抗R2=1k10串接电阻到地则与R2并联悬空则不影响R2。
可数字调压,见 [电阻调压改数字调压](../电阻调压改数字调压.md)
11使能
~~3不接10串4.7k到地则输出5.6V~~