LT3837
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LT3837

隔离型无光隔离器同步反激式控制器

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Info: : 量产 tooltip
Info: : 量产 tooltip
特性
  • 直接从主端绕组检测输出电压 —— 无需光隔离器
  • 同步驱动器用于实现高效率
  • 电源电压范围:4.5V 至 20V
  • 准确的调节而无需用户修整
  • 可编程开关频率范围:50kHz 至 250kHz
  • 可同步
  • 负载补偿
  • 欠压闭锁
  • 采用耐热增强型 16 引脚 TSSOP 封装

 

更多细节
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LT®3837 是一款隔离型开关稳压控制器,专为中等功率反激式拓扑结构而设计。一种典型应用是 10W 至 60W,该器件从一个 DC 电源来供电。

LT3837 是电流模式控制器,通过在反激期间利用一个变压器绕组来检测副端电压,它可调节一个输出电压。这使得能够在不采用光隔离器的情况下实现严格的输出调节,从而改善了动态响应和可靠性。同步整流提高了转换器效率,并改善了多输出转换器中的输出交叉调整率。

LT3837 工作于强制连续导通模式,该模式改善了多绕组应用中的交叉调整率。开关频率可由用户来设置,并能够在外部进行同步。该器件还具有负载补偿、欠压闭锁和软起动电路。

LT3837 采用耐热增强型 16 引脚 TSSOP 封装。

 


Applications

  • 隔离型中等功率 (10W 至 60W) 电源
  • 仪表电源
  • 隔离型医用电源

 

产品技术资料帮助

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

参考资料

产品型号 引脚/封装图-中文版 文档 CAD 符号,脚注和 3D模型
LT3837EFE#PBF
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LT3837EFE#TRPBF
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  • HTML
LT3837IFE#PBF
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LT3837IFE#TRPBF
  • HTML
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根据型号筛选

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产品型号

产品生命周期

PCN

4月 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT3837EFE#PBF

量产

LT3837EFE#TRPBF

量产

LT3837IFE#PBF

量产

LT3837IFE#TRPBF

量产

根据型号筛选

reset

重置过滤器

产品型号

产品生命周期

PCN

4月 6, 2022

- 22_0068

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT3837EFE#PBF

量产

LT3837EFE#TRPBF

量产

LT3837IFE#PBF

量产

LT3837IFE#TRPBF

量产

软件和型号相关生态系统

评估套件 4

reference details image

DC950A-B

LT3837EFE Demo Board | 9V ≤ VIN ≤ 36V, VOUT: 5V/2A, 3.3V/3A, 2.5V/3A

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DC950A-B

LT3837EFE Demo Board | 9V ≤ VIN ≤ 36V, VOUT: 5V/2A, 3.3V/3A, 2.5V/3A

LT3837EFE Demo Board | 9V ≤ VIN ≤ 36V, VOUT: 5V/2A, 3.3V/3A, 2.5V/3A

产品详情

Demonstration circuit 950A-B is an isolated, 30W multi-output, synchronous flyback converter in 1/8 brick format featuring the LT3837. Output voltage sensing is implemented without the use of opto-coupler, by sensing the voltage across a primary side auxiliary winding. A load compensation circuit is used to compensate for voltage drops caused by load currents. DC950A-B has input voltage range 9V-36V. Demonstration circuit 950A uses a transformer design with tapped secondary winding, to achieve higher efficiency and better cross regulation than is possible with a transformer that uses a separate winding for each output.



reference details image

DC1038A-B

LT3837EFE | 9V to 36V input to 5V at 7A Synchronous Flyback Converter

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DC1038A-B

LT3837EFE | 9V to 36V input to 5V at 7A Synchronous Flyback Converter

LT3837EFE | 9V to 36V input to 5V at 7A Synchronous Flyback Converter

产品详情

Demonstration circuit 1038A-B is a 35W isolated flyback converter with synchronous rectification and primary-side regulation featuring the LT3837. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using the part in a flyback power supply. It operates at 200kHz and produces a regulated 5V, 7A output from an input voltage range of 9V to 36V. Isolation voltage is 1500VDC.

reference details image

DC1038A-C

LT3837EFE | 9V to 36V input to 12V at 3A Synchronous Flyback Converter

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DC1038A-C

LT3837EFE | 9V to 36V input to 12V at 3A Synchronous Flyback Converter

LT3837EFE | 9V to 36V input to 12V at 3A Synchronous Flyback Converter

产品详情

Demonstration circuit 1038A-C is a 36W isolated flyback converter with synchronous rectification and primary-side regulation featuring the LT3837. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using the part in a flyback power supply. It operates at 200kHz and produces a regulated 12V, 3A output from an input voltage range of 9V to 36V. Isolation voltage is 1500VDC.

reference details image

DC1038A-A

LT3837EFE | 9V to 36V input to 3.3V at 10A Synchronous Flyback Converter

zoom

DC1038A-A

LT3837EFE | 9V to 36V input to 3.3V at 10A Synchronous Flyback Converter

LT3837EFE | 9V to 36V input to 3.3V at 10A Synchronous Flyback Converter

产品详情

Demonstration circuit 1038A-A is a 33W isolated flyback converter with synchronous rectification and primary-side regulation featuring the LT3837. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using the part in a flyback power supply. It operates at 200kHz and produces a regulated 3.3V, 10A output from an input voltage range of 9V to 36V. Isolation voltage is 1500VDC.

工具及仿真模型 1

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。

启动此部分的现成LTspice演示电路:

1步:下载并在计算机上安装LTspice

2步:单击下面的链接,下载演示电路。

3步:如果在单击以下链接之后LTspice未自动打开,可通过右击该链接并选择“目标另存为”来运行该仿真。将文件保存到计算机之后,请启动LTspice并从“文件”菜单中选择“打开”来打开演示电路。

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