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AC/DC & DC/DC converters (integrated FET)

LM25180

現行

具有 65V、1.5A 整合式 MOSFET 的 42Vin 無光耦返馳式轉換器

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產品規格表

LM25180

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 1.5 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Flyback Type Converter (Integrated Switch) Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Rating Catalog Operating temperature range (°C) -40 to 150
Iout (max) (A) 1.5 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Flyback Type Converter (Integrated Switch) Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Rating Catalog Operating temperature range (°C) -40 to 150
WSON (NGU) 8 16 mm² 4 x 4
  • 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 現行 具有 100V、1.5A 整合式 MOSFET 的 65VIN 無光耦返馳式轉換器 65-V input rating

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類型 標題 日期
* Data sheet LM25180 42-VIN PSR Flyback DC/DC Converter with 65-V, 1.5-A Integrated Power MOSFET datasheet (Rev. B) PDF | HTML 2019年 9月 18日
Technical article Mitigating CMTI on a PSR flyback for SiC-based traction inverter designs PDF | HTML 2024年 1月 5日
Analog Design Journal Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A) PDF | HTML 2023年 5月 25日
Application note Designing High Voltage Power Supply for Ultrasound Smart Probes (Rev. A) PDF | HTML 2023年 5月 16日
Analog Design Journal Selecting output caps to optimize ripple and stability in PSR flyback converters (Rev. B) PDF | HTML 2023年 5月 4日
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications PDF | HTML 2022年 11月 9日
Application note Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A) PDF | HTML 2020年 9月 2日
Functional safety information LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML 2020年 6月 26日
Technical article How to raise regulation performance with a stacked-output PSR flyback DC/DC conver PDF | HTML 2020年 6月 2日
Analog Design Journal How an auxless PSR-flyback converter can increase PLC reliability and density 2019年 9月 30日
EVM User's guide LM5180-Q1 Single-Output EVM User's Guide (Rev. D) 2019年 7月 18日
White paper An overview of radiated EMI specifications for power supplies 2018年 6月 5日
White paper An overview of conducted EMI specifications for power supplies 2018年 2月 1日
Application brief PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 2017年 11月 13日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM5180EVM-DUAL — 寬 VIN PSR 返馳式轉換器雙輸出評估模組

The LM5180EVM-DUAL evaluation module (EVM) is designed to showcase the performance of the LM5180 PSR flyback converter with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide input voltage range of 10 V to 65 V to deliver a (...)
使用指南: PDF
TI.com 無法提供
開發板

LM5180EVM-S05 — 寬 VIN PSR 返馳式轉換器單輸出評估模組

The LM5180EVM-S05 evaluation module (EVM) is designed to showcase the performance of the LM5180 PSR flyback converter with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide input voltage range of 10 V to 65 V to deliver a (...)
使用指南: PDF
TI.com 無法提供
計算工具

LM25180DESIGN-CALC — LM25180 Flyback Converter Quickstart Design Tool

Welcome to the LM25180 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC flyback regulator based on the LM25180 PSR flyback converter. As such, the user can expeditiously arrive at an optimized design to meet the application (...)

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支援產品和硬體

產品
AC/DC & DC/DC converters (integrated FET)
LM25180 — 具有 65V、1.5A 整合式 MOSFET 的 42Vin 無光耦返馳式轉換器 LM25180-Q1 — 具有 65V、15A 整合功率 MOSFET 的車用 42V 輸入 PSR 返馳式轉換器
硬體開發
開發板
LM5180EVM-DUAL — 寬 VIN PSR 返馳式轉換器雙輸出評估模組 LM5180EVM-S05 — 寬 VIN PSR 返馳式轉換器單輸出評估模組
軟體
計算工具
LM25180DESIGN-CALC — LM25180 PSR 返馳快速入門設計工具
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PCB 佈局

LM5180EVM-S05 PCB Layout Files

SNVC233.ZIP (1903 KB)
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PCB 佈局

LM5180EVM-DUAL PCB Layout Files

SNVR472.ZIP (3416 KB)
下載
參考設計

TIDA-010006 — 具備整合式交換器 PSR 返馳控制器的隔離式 IGBT 閘極驅動電源參考設計

This reference design provides isolated positive and negative voltage rails for Insulated  Gate Bipolar Transistor (IGBT) gate drivers from a 24-V DC input supply. It uses a flyback power supply topology to generate four pairs of 15-V and –5-V outputs suitable for powering six IGBT gate (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01535 — 適用於電源隔離式超小型類比輸出模組的參考設計

This single-channel, power-isolated, analog output module reference design delivers current and voltage outputs using the highly-integrated DAC8771 digital-to-analog converter (DAC). The high integration of the DAC8771 coupled with the LM25180 primary-side regulated flyback converter lead to a (...)
Design guide: PDF
電路圖: PDF
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WSON (NGU) 8 檢視選項
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