Power 中文专区

该专区内容有关Power 中文专区的讨论和常见问题解答。发帖前请阅读 Analog Devices EngineerZone 行为准则。

by engineerjr
Power 中文专区

Started 3 days ago
25 0 1
Not Answered
max17577 synchronization clock range 0
Not Answered

The manual states that the capture frequency range must be between 1.1fsw and 1.4fsw, but in practice, I was able to capture it at 5MHz. Why is there this restrictio n range?

hardware Inverting Regulators switching regulators MAX17577

25 0 1
by wyt7109
Power 中文专区

Started 4 days ago
29 0 0
Not Answered
我想用LTC3765/LTC3766组合，设计一个50-150VDC输入，32VDC3A输出的电源。并且采用三相并联工作。有一个问题，在ADI网站上搜索到的相关资料中这两个芯片构成的电源输入电压均在75V以下，且个别资料中还提到他们适合低标称电压48V系统，我想知道我的电压输入范围，这两个芯片是否适合，还有如果我想尽可能提高工作环境温度，我要注意哪些问题呢 0
Not Answered

LTC3765/LTC3766适合高电压输入设计么

电源设计

29 0 0
by Big2
Power 中文专区

Latest 6 days ago by Big2
78 2 0
Answered
LTC3779 使用問題 0
Answered

使用LTC3779 設計一各 24V~110V 轉54V . 輸出端放置6各3.3uF/100V 電容 *6 . 及100F /63V EC 及TVS. 客戶發現都是3.3uF 燒毀. 電容送驗廠商告知燒毀 . 為何只有MLCC 會燒毀? TVS .EC 都不會燒毀還有一直有異音求解

External Power Switch Buck-Boost Controllers Buck-Boost Regulators

78 2 0
by safds
Power 中文专区

Latest 6 days ago by lauren
87 1 0
Not Answered
AD5560压摆率问题 0
Not Answered

AD5560 EVAL评估板测force V压摆率与设置的1V/us相差很大，好像与补偿设置和电流档位都有关，AVDD/AVSS，和HC—VDD/VSS都是 +/- 15V ,测0到1V的上升时间 1, 有没详细说明如何能达到与设置的压摆率一致？ 2 ，当负载dut为电容时压摆率偏差更大，还会钳位报警，是否要使用ext电流档

dps amplifiers ad5560 电源设计 Specialty Amplifiers Show More

87 1 0
by chensheng
Power 中文专区

Started 25 days ago
28 0 0
Not Answered
LT3743芯片负载短路时开关节点并未关闭，与规格书描述不一致 0
Not Answered

1.规格书P12中说道，过流保护采用逐周期限制机制，一旦电流达到过流阈值，开关电路将立即关断。如下图： 2.使用LT3743参考电路搭建了IMAX=10A的恒流LED驱动电路，当把负载电流设置为6A的时候，此时负载接的是大功率电阻，用线短接负载，测试负载电流，负载电压，以及SW节点和上下管的波形，波形如下：黄线：负载电压，绿线：负载电流，蓝线：SW节点波形绿线电流一开始是6A，短路后，瞬间冲击到20A以上，按照规格书的说明，高于最大限流值（10.5A）应该会关闭SW节点...

hardware Step-Down (Buck) LED Drivers overcurrent 短路 lt3743 LED Driver IC Show More

28 0 0
by bvk
Power 中文专区

Latest 27 days ago by lauren
102 1 0
Answered
LTC4539烧MOS管 0
Answered

使用LTC4539按照datasheet搭建如下电源切换电路发现会烧毁第一级MOS管请问是可能什么原因

Power Monitor Control and Protection

102 1 0
by flyingkyo
Power 中文专区

Latest 1 month ago by lauren
155 1 0
Answered
LT8610A 上电烧毁 0
Answered

我们在常温下使用LT8610A时，发生LT8610A烧毁的问题。我们输入是36V，输出25V，电流1A。以下是原理图，请帮忙看一下设计上有没有问题？以及LT8610A烧毁的分析方向。谢谢啦！

Internal Power Switch Buck Regulators Step-Down (Buck) Regulators

155 1 0
by jyhxd2003
Power 中文专区

Latest 2 months ago by lauren
188 1 1
Answered
WDI引脚从高阻态切换到方波喂狗模式 0
Answered

1：看门狗芯片MAX823TEUK，WDI引脚和MCU之间有个三态门控制芯片74LVC1G125，同时三态门控制芯片的使能引脚也由MCU控制。 2：产品是Linux系统，从上电到系统全部启动完成需要近10秒，所以在系统启动期间，需要禁用看门狗功能，等系统完全启动后再启用MAX823看门狗 3：目前设计是在产品上电初期MCU就控制三态门芯片的1脚信号WDG_EN为高电平禁止使能，使得三态门控制输出引脚4为高阻态，这引脚连接到MAX823的WDI引脚，禁用MAX823。上电5秒后由MCU输出喂狗方波...

hardware 看门狗 WDI 高组态 Supervisory Circuits Single-Supply Monitors MAX823TEUK MAX823 Show More

188 1 1
by DAWNFAKE
Power 中文专区

Latest 2 months ago by lauren
120 1 0
Answered
LTM4700输出0.85V纹波过大的问题 0
Answered

问题1.LTM4700输出0.85V的纹波很大，原理图与0.85电源纹波状态图如下。问题2.使用了LTPOWERPLAY调试，频率没办法更改。调整其他课调参数，纹波情况没有改善。频率有办法修改吗？

120 1 0
by GuoBaoRui
Power 中文专区

Latest 2 months ago by lauren
251 3 0
Answered
LT8316HFE#PBF高温测试时烧毁MOS管问题 0
Answered

最近在使用LT8316HFE#PBF做一个直流400V转24V的模块，电路是按照手册推荐的电路设计的，详见下图，反激变压器是定制的，目前常温测试没有问题，当温度升高到140℃时mos管Q1就烧掉（带载约0.92A），不知道什么原因，将这个mos管换成低导通内阻的在高温时也烧，请大神帮忙指导一下，不知哪里出的问题

hardware lt8316 flyback LT8316HFE#PBF switching regulators Forward and Isolated Controller Show More

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Power 中文专区

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max17577 synchronization clock range 0
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LTC3779 使用問題 0
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AD5560压摆率问题 0
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LT3743芯片负载短路时开关节点并未关闭，与规格书描述不一致 0
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LTC4539烧MOS管 0
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LT8610A 上电烧毁 0
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WDI引脚从高阻态切换到方波喂狗模式 0
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LTM4700输出0.85V纹波过大的问题 0
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LT8316HFE#PBF高温测试时烧毁MOS管问题 0
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LTC3779 使用問題 0
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LTC4539烧MOS管 0
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LT8610A 上电烧毁 0
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LT8292是否有可以帮助设计辅助的计算工具或文档？ 0
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请推荐输入40~70V，输出24V 20A的buck方案 0
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WDI引脚从高阻态切换到方波喂狗模式 0
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LTC4451AV#TRMPBF 材料代码 0
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LTM4700输出0.85V纹波过大的问题 0
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LT8316HFE#PBF高温测试时烧毁MOS管问题 0
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LT8708（非LT8708-1）是否支持作为从机工作 +1
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Power 中文专区

Not Answered max17577 synchronization clock range 0 Not Answered

Answered LTC3779 使用問題 0 Answered

Not Answered AD5560压摆率问题 0 Not Answered

Not Answered LT3743芯片负载短路时开关节点并未关闭，与规格书描述不一致 0 Not Answered

Answered LTC4539烧MOS管 0 Answered

Answered LT8610A 上电烧毁 0 Answered

Answered WDI引脚从高阻态切换到方波喂狗模式 0 Answered

Answered LTM4700输出0.85V纹波过大的问题 0 Answered

Answered LT8316HFE#PBF高温测试时烧毁MOS管问题 0 Answered

Answered LTC3779 使用問題 0 Answered

Answered LTC4539烧MOS管 0 Answered

Answered LT8610A 上电烧毁 0 Answered

Answered LT8292是否有可以帮助设计辅助的计算工具或文档？ 0 Answered

Answered 请推荐输入40~70V，输出24V 20A的buck方案 0 Answered

Answered WDI引脚从高阻态切换到方波喂狗模式 0 Answered

Answered LTC4451AV#TRMPBF 材料代码 0 Answered

Answered LTM4700输出0.85V纹波过大的问题 0 Answered

Answered LT8316HFE#PBF高温测试时烧毁MOS管问题 0 Answered

Answered LT8708（非LT8708-1）是否支持作为从机工作 +1 Answered

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max17577 synchronization clock range 0
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LTC3779 使用問題 0
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AD5560压摆率问题 0
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LT3743芯片负载短路时开关节点并未关闭，与规格书描述不一致 0
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LTC4539烧MOS管 0
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LT8610A 上电烧毁 0
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WDI引脚从高阻态切换到方波喂狗模式 0
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Answered
LTM4700输出0.85V纹波过大的问题 0
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LT8316HFE#PBF高温测试时烧毁MOS管问题 0
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LTC3779 使用問題 0
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LTC4539烧MOS管 0
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LT8610A 上电烧毁 0
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LT8292是否有可以帮助设计辅助的计算工具或文档？ 0
Answered

Answered
请推荐输入40~70V，输出24V 20A的buck方案 0
Answered

Answered
WDI引脚从高阻态切换到方波喂狗模式 0
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Answered
LTC4451AV#TRMPBF 材料代码 0
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Answered
LTM4700输出0.85V纹波过大的问题 0
Answered

Answered
LT8316HFE#PBF高温测试时烧毁MOS管问题 0
Answered

Answered
LT8708（非LT8708-1）是否支持作为从机工作 +1
Answered