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LM25180-Q1

現行

具 65V、1.5A 整合功率 MOSFET 的車用 42-VIN PSR 返馳式轉換器

立即訂購
產品規格表

LM25180-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive 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 Automotive 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)
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V
    • 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
    • Low EMI operation to meet CISPR 25
  • High efficiency PSR flyback operation
    • Quasi-resonant switching in boundary conduction mode (BCM) at heavy load
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Create a custom regulator design using WEBENCH® Power Designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V
    • 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
    • Low EMI operation to meet CISPR 25
  • High efficiency PSR flyback operation
    • Quasi-resonant switching in boundary conduction mode (BCM) at heavy load
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Create a custom regulator design using WEBENCH® Power Designer

The LM25180-Q1 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-Q1 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-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.

The LM25180-Q1 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-Q1 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-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.
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LM5180-Q1 現行 具有 100-V、1.5-A 整合式 MOSFET 的車用 65-VIN 無光耦返馳式轉換器 65-V input rating

技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM25180-Q1 42-VIN PSR Flyback DC/DC Converter with 65-V, 1.5-A Integrated MOSFET datasheet (Rev. A) PDF | HTML 2019/7/3
Application brief Optimized Excitation Power Stage for Electrically Excited Synchronous Machines (Rev. A) PDF | HTML 2026/5/5
白皮書 Isolated Bias Power Supply Architecture for HEV/EV Single Stage Onboard Chargers PDF | HTML 2026/1/7
白皮書 Isolated Bias Power Supply Architecture for HEV/EV HVLV DCDC Converters PDF | HTML 2025/1/16
白皮書 Isolated Bias Power Supply Architecture for HEV and EV Onboard Chargers PDF | HTML 2024/11/27
類比設計期刊 Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A) PDF | HTML 2023/5/25
技術文章 MHEVs: Optimizing the automotive powertrain for efficiency and cost PDF | HTML 2021/5/24
應用說明 LM5180 EMI Performance PDF | HTML 2021/4/4
功能安全資訊 LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML 2020/6/26
技術文章 How to raise regulation performance with a stacked-output PSR flyback DC/DC conver PDF | HTML 2020/6/2
類比設計期刊 How an auxless PSR-flyback converter can increase PLC reliability and density 2019/9/30
應用說明 DC/DC Buck Converters With Ultra-Low IQ for Industrial Battery-Pack Applications 2019/2/20
白皮書 An overview of radiated EMI specifications for power supplies 2018/6/5
白皮書 An overview of conducted EMI specifications for power supplies 2018/2/1
Application brief PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 2017/11/13

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

LM5180EVM-DUAL 評估模組 (EVM) 旨在展示具廣泛輸入電壓範圍的 LM5180 PSR 返馳式轉換器的性能。該設計採用微型元件封裝，元件數量少。它在 10V 至 65V 的寬輸入電壓範圍內運作，以高達 200mA 的電流下提供 15V 及 -7.7V 輸出。LM5180 無需附屬線圈或光耦合器運作，可提供優於 1% 極精準的輸出電壓穩壓。LM5180 提供全套防護功能，可確保穩壓器在發生故障時提供防護。其中包括欠電壓鎖定以在電壓暫降情況下確保正常運作、可編程緩啟動以減少突波電流、Hiccup 模式過電流保護及過熱自動關機。此外，也提供精密啟用及輸出電壓熱補償功能。
使用指南: PDF
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開發板

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

LM5180EVM-S05 評估模組 (EVM) 旨在展示具廣泛輸入電壓範圍的 LM5180 PSR 返馳式轉換器的性能。該設計採用微型元件封裝，元件數量少。此評估模組可在 10V 至 65V 的廣泛輸入電壓範圍內運作，提供固定 5V 輸出，設定點準確度優於 1%，且最大輸出電流可達 1A。LM5180 無需附屬線圈或光耦合器運作，可提供優於 1% 極精準的輸出電壓穩壓。LM5180 提供全套防護功能，可確保穩壓器在發生故障時提供防護。其中包括欠電壓鎖定以在電壓暫降情況下確保正常運作、可編程緩啟動以減少突波電流、Hiccup (...)
使用指南: PDF
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計算工具

LM25180DESIGN-CALC — LM25180 Flyback Converter Quickstart Design Tool

歡迎使用 LM25180 快速入門設計工具。此獨立工具有助於電源供應工程師設計基於 LM25180 PSR 返馳轉換器的 DC/DC 返馳穩壓器。因此，使用者可以迅速達到最佳化的設計，以符合應用需求。

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計算工具

LM25183-LM25184DESIGN-CALC — LM25183 and LM25184 Quickstart Design Tool

Welcome to the LM25183 and LM25184 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 LM25183 and LM25184 PSR flyback converter. As such, the user can expeditiously arrive at an optimized design (...)
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參考設計

PMP31182 — 採用四種不同拓撲的隔離式偏壓電源供應器參考設計

本參考設計展示四個使用不同拓撲做為 PSR 返馳、推拉式、LLC 共振和隔離式 DCDC 模組的隔離式偏壓電源供應器設計。這些拓撲可提供特定優點，但同時需有所取捨。使用四種硬體設計即可對這些拓撲進行充分比較，同時讓電力參數盡可能保持雷同。這些設計的輸入與輸出電壓為 15V，最大負載電流為 100mA。 

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