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AC/DC 轉換器

LM25184-Q1

現行

具有 65-V、4.1-A 整合式 MOSFET 的車用 42-VIN 無光耦返馳式轉換器

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產品規格表

LM25184-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology PSR flyback Switch current limit (typ) (A) 4.1 Iout (max) (A) 4.1 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
Rating Automotive Topology PSR flyback Switch current limit (typ) (A) 4.1 Iout (max) (A) 4.1 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
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
  • Functional Safety-Capable
  • 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
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.11-Ω power MOSFET
    • No optocoupler or transformer auxiliary winding required for VOUT regulation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turnoff in BCM
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 25 Class 5 requirement
  • Create a custom flyback regulator design using WEBENCH Power Designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
  • Functional Safety-Capable
  • 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
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.11-Ω power MOSFET
    • No optocoupler or transformer auxiliary winding required for VOUT regulation
  • High-efficiency PSR flyback operation
    • Quasi-resonant MOSFET turnoff in BCM
    • Single- and multi-output implementations
  • Ultra-low conducted and radiated EMI signatures
    • Soft switching avoids diode reverse recovery
    • Optimized for CISPR 25 Class 5 requirement
  • Create a custom flyback regulator design using WEBENCH Power Designer

The LM25184-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. 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 15 W with enhanced headroom for line transients.

The LM25184-Q1 simplifies the 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, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM25184-Q1 converter 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 LM25184-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. 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 15 W with enhanced headroom for line transients.

The LM25184-Q1 simplifies the 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, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM25184-Q1 converter 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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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 LM25184-Q1 42-VIN PSR Flyback DC/DC Converter with 65-V, 4.1-A MOSFET datasheet (Rev. A) PDF | HTML 2020/8/17
類比設計期刊 Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A) PDF | HTML 2023/5/25
應用說明 LM5181 Bipolar + and - 18 V Output Design for Signal Chains in PLC Applications PDF | HTML 2021/10/29
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 LM2518x, LM2518x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and P PDF | HTML 2020/8/26
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
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

LM25184EVM-S12 — 42-VIN、1-AOUT PSR 返馳式轉換器單輸出評估模組

LM25184EVM-S12 評估模組 (EVM) 旨在展示具廣泛輸入電壓範圍的 LM25184-Q1 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。可在 6 V 至 42 V 的廣泛輸入電壓範圍內運作，提供高於 1.5% 設定點準確度以及高達 1 A 電流的固定 12-V 輸出。LM25184-Q1 無需輔助繞組或光耦合器即可運作，並提供優於 1% 的極嚴格輸出電壓調節。LM25184-Q1 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 (UVLO) 以在電壓暫降情況下確保正常運作、可編程緩啟動 (SS) 以減少突波電流、Hiccup (...)
使用指南: PDF
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模擬型號

LM25184-Q1 PSpice Transient Model

SNVMC00.ZIP (130 KB) - PSpice 模型
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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

PMP30834 — 具有整合式開關和一次側穩壓 (PSR) 功能的隔離式 4-W 參考設計

此參考設計透過 5-V 直流輸入電源提供 5.2-V、4-W 隔離電壓。隔離輸出電壓會從一次側返馳電壓進行取樣，因此無需使用光絕緣器、電壓參考或變壓器的第三個繞組來調節輸出電壓。高度整合可產生簡易、可靠及高密度的設計，且只有一個元件跨越隔離層。
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參考設計

PMP30934 — IGBT 和 SiC 閘極驅動器輔助 PSU 參考設計

本參考設計推出用於供應汽車絕緣閘極雙極電晶體 (IGBT) 或碳化矽 (SiC) 電晶體閘極驅動的微型輔助電源供應器 (PSU)。隔離輸出支援三個閘控。每個均隨附 +17 V 和 -4 V。爲了簡化變壓器繞組，已實作齊納二極體的虛擬接地來進行對稱負載。

LM25184 控制器支援一次側穩壓，方法是控制二次側的返馳電壓。不需要額外的輔助繞組串聯。波谷切換有利於提高效率。為了減少對來源的反射漣波，已將差動輸入濾波器加入 PSR 返馳式轉換器。

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參考設計

PMP41144 — IGBT 和 SiC 閘極驅動器輔助 PSU 和平面變壓器參考設計

本參考設計推出用於供應汽車絕緣閘極雙極電晶體 (IGBT) 或碳化矽 (SiC) 電晶體閘極驅動的微型輔助電源供應器 (PSU)。隔離輸出支援三個閘控，每個都提供 21.2V ， 2W 輸出。此設計使用平面變壓器來降低電路板高度和成本。LM25184-Q1 控制器支援一次側穩壓，方法是控制二次側的返馳電壓。不需要額外的輔助繞組串聯。電路板最大效率為 89.2%。此設計使用六個 PCB 層，溫度上升至 16°C ，全負載 6W。
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參考設計

TIDM-02012 — 採用 MathWorks® 的高電壓 HEV/EV HVAC eCompressor 馬達控制參考設計

TIDM-02012 是一款高電壓、5-kW 參考設計，專為 HEV/EV 壓縮機 (eCompressor) 應用而打造，由中階性能 C2000™ TMS320F28003x 即時 MCU 控制。旨在以 400-V 與 800-V DC-bus 進行評估，涵蓋較高電池電壓的市場趨勢。  以 controlCARD 為架構的設計，讓使用者能評估多種 MCU 和閘極驅動器選項，並且可隨需調整以支援 C2000™ 產品組合中的其他裝置，包括未來發展藍圖裝置，以滿足日益增長的網路安全性、功能安全性和其他汽車市場需求。

MathWorks (...)

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參考設計

TIDM-02017 — 二輪和三輪車牽引逆變器參考設計

TIDM-02017 是 5kW、48V 牽引逆變器參考設計，旨在為您開發適用於兩輪車和三輪車應用的高性能、高效率牽引逆變器系統提供基礎，並協助您更快地將產品推向市場。此設計採用 F28P65x C2000™ 即時微控制器，可搭配 FreeRTOS 即時作業系統連接埠一起獨立執行馬達控制演算法。此參考設計也採用具高閘極驅動強度和進階監控與保護功能的 DRV3255 整合式閘極驅動器，能實現穩固的逆變器運作。硬體設計的模組化 (包括 C2000™ 控制卡支援) 使其具有可擴充性，並可輕鬆評估 C2000™ 產品系列。

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