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LM25180

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具有 65V、1.5A 集成式 MOSFET 的 42V 输入电压非光电反激式转换器

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数据表

LM25180

正在供货
数据表 立即订购

产品详情

Rating Catalog Topology Flyback Switch current limit (typ) (A) 1.5 Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 82 Type Converter (Integrated Switch)
Rating Catalog Topology Flyback Switch current limit (typ) (A) 1.5 Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 82 Type Converter (Integrated Switch)
WSON (NGU) 8 16 mm² (4 mm × 4 mm)
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V with operation down to 3.5 V after start-up
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Internal loop compensation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turn-off in BCM
    • Low input quiescent current
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 32 EMI requirements
  • Create a custom regulator design using WEBENCH® Power Designer
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V with operation down to 3.5 V after start-up
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Internal loop compensation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turn-off in BCM
    • Low input quiescent current
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 32 EMI requirements
  • Create a custom regulator design using WEBENCH® Power Designer

The LM25180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 42 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.

The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 65-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.

The LM25180 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.

The LM25180 flyback converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM25180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 42 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation.

The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 65-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.

The LM25180 flyback converter is available in a 8-pin, 4-mm × 4-mm, thermally-enhanced WSON package with 0.8-mm pin pitch.

The LM25180 flyback converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.
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LM5180 正在供货 具有 100V、1.5A 集成式 MOSFET 的 65V 输入电压非光电反激式转换器 65-V input rating

技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LM25180 42-VIN PSR Flyback DC/DC Converter with 65-V, 1.5-A Integrated Power MOSFET 数据表 (Rev. B) PDF | HTML 2019-9-18
产品概述 适用于 PLC I/O 模块和其他低功耗应用的隔离式电源拓扑 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2024-8-29
技术文章 Mitigating CMTI on a PSR flyback for SiC-based traction inverter designs PDF | HTML 2024-1-5
模拟设计期刊 为何在双电池 mHEV 系统中使用 PSR 反激式隔离转换器 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2023-6-28
模拟设计期刊 选择输出电容器以优化 PSR 反激式转换器的纹波和稳定性 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2023-6-6
应用手册 设计适用于超声波智能探头的双极高压 SEPIC 电源 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2023-5-31
应用手册 患者监护仪中所用隔离式电源的拓扑选择 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2021-7-20
白皮书 电源的传导 EMI 规格概述 英语版 2020-10-14
功能安全信息 LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML 2020-6-26
技术文章 How to raise regulation performance with a stacked-output PSR flyback DC/DC conver PDF | HTML 2020-6-2
模拟设计期刊 How an auxless PSR-flyback converter can increase PLC reliability and density 2019-9-30
白皮书 An overview of radiated EMI specifications for power supplies 2018-6-5
应用简报 PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 2017-11-13

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

LM5180EVM-DUAL — 具有双路输出的宽 VIN PSR 反激式转换器评估模块

LM5180EVM-DUAL 评估模块 (EVM) 可展示具有宽输入电压范围的 LM5180 PSR 反激式转换器的性能。设计采用微型尺寸封装，所需元件数量较少。其较宽的工作输入电压范围为 10V 至 65V，可以高达 200mA 的电流提供 15V 和 -7.7V 输出。在不使用辅助绕组或光耦合器的情况下工作时，LM5180 可提供优于 1% 的超紧凑输出电压调节。LM5180 提供一整套保护特性，以确保在故障状况期间对稳压器进行保护。这些特性包括确保电压骤降状况期间正常运行的欠压锁定、降低浪涌电流的可编程软启动、间断模式过流保护和热关断。还提供了精密使能端和输出电压热补偿功能。
用户指南: PDF
支持的产品和硬件
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限制：
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无货
评估板

LM5180EVM-S05 — 具有单路输出的宽 VIN PSR 反激式转换器评估模块

LM5180EVM-S05 评估模块 (EVM) 可展示具有宽输入电压范围的 LM5180 PSR 反激式转换器的性能。设计采用微型尺寸封装，所需元件数量较少。它在 10V 至 65V 的宽输入电压范围内工作，可提供 5V 固定输出电压，以及优于 1% 的设定点精度和高达 1A 的电流。在不使用辅助绕组或光耦合器的情况下工作时，LM5180 可提供优于 1% 的超紧凑输出电压调节。LM5180 (...)
用户指南: PDF
支持的产品和硬件
有库存
限制：
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计算工具

LM25180DESIGN-CALC — LM25180 Flyback Converter Quickstart Design Tool

欢迎使用 LM25180 快速入门设计工具。此独立工具可促进并协助电源工程师设计基于 LM25180 PSR 反激式转换器的直流/直流反激式稳压器。这样，用户可以快速实现优化的设计，从而满足应用要求。

支持的产品和硬件
参考设计

TIDA-010006 — 具有集成开关 PSR 反激式控制器的隔离式 IGBT 栅极驱动电源参考设计

此参考设计通过 24V 直流输入电源为绝缘栅双极晶体管 (IGBT) 栅极驱动器提供隔离式正负电压轨。该设计采用反激式电源拓扑生成四对 15V 和 –5V 输出，适合为各 1W 的六个 IGBT 栅极驱动器供电。通过集成 LM5180 反激式转换器内 100V 额定初级侧开关，并且无需辅助变压器绕组，实现了紧凑型解决方案。

支持的产品和硬件
参考设计

TIDA-010257 — 基于 Vienna 整流器的 10kW 三相功率因数校正参考设计

高功率三相功率因数校正应用（例如家用电器、电动汽车 (EV) 充电器和通信电源整流器）中使用了 Vienna 整流器电源拓扑。整流器的控制设计可能很复杂。该参考设计说明了使用 C2000™ 微控制器 (MCU) 控制功率级的方法。该设计还可基于图形用户界面 (GUI) 实现对 Vienna 整流器的监测和控制。供该设计使用的硬件和软件可帮助缩短产品上市时间。
支持的产品和硬件
参考设计

TIDA-01535 — 电源隔离型超紧凑模拟输出模块参考设计

此单通道电源隔离型模拟输出模块参考设计使用高度集成的 DAC8771 数模转换器 (DAC) 提供电压和电流输出。DAC8771 的高集成度与 LM25180 初级侧调节反激式转换器相结合，实现了板尺寸为 52mm × 40mm、最大元件高度为 4mm 的紧凑型隔离式设计。此外，该设计具有外围电路，可提供电磁干扰 (EMI) 和电磁兼容性 (EMC) 瞬态保护。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
WSON (NGU) 8 Ultra Librarian
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