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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM25183-Q1

現行

具有 65-V、2.5-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

LM25183-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology PSR flyback Iout (max) (A) 2.5 Vin (min) (V) 4.5 Vin (max) (V) 42 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 Duty cycle (max) (%) 82 Switch current limit (typ) (A) 2.5
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology PSR flyback Iout (max) (A) 2.5 Vin (min) (V) 4.5 Vin (max) (V) 42 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 Duty cycle (max) (%) 82 Switch current limit (typ) (A) 2.5
WSON (NGU) 8 16 mm² 4 x 4
  • 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 LM25183-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 10 W with enhanced headroom for line transients.

The LM25183-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 LM25183-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 LM25183-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 10 W with enhanced headroom for line transients.

The LM25183-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 LM25183-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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類型 標題 日期
* Data sheet LM25183-Q1 42-VIN PSR Flyback DC/DC Converter with 65-V, 2.5-A MOSFET datasheet (Rev. A) PDF | HTML 2020年 9月 22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
Technical article MHEVs: Optimizing the automotive powertrain for efficiency and cost PDF | HTML 2021年 5月 24日
Application note LM5180 EMI Performance PDF | HTML 2021年 4月 4日
Functional safety information LM2518x, LM2518x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and P PDF | HTML 2020年 8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 LM25184-Q1 Single-output EVM User's Guide 2019年 7月 19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

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

The LM25184EVM-S12 evaluation module (EVM) is designed to showcase the performance of the LM25184-Q1 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 6 V to 42 V to deliver (...)
使用指南: PDF
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模擬型號

LM25183-Q1 PSpice Transient Model

SNVMBZ3.ZIP (134 KB) - PSpice Model
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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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支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
LM25180-Q1 — 具有 65V、15A 整合功率 MOSFET 的車用 42V 輸入 PSR 返馳式轉換器 LM25183 — 具有 65-V、2.5-A 整合式 MOSFET 的 42-VIN 無光耦返馳式轉換器 LM25183-Q1 — 具有 65-V、2.5-A 整合式 MOSFET 的車用 42-VIN 無光耦返馳式轉換器 LM25184 — 具有 65-V、4.1-A 整合式 MOSFET 的 42-VIN 無光耦返馳式轉換器 LM25184-Q1 — 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
硬體開發
開發板
LM25184EVM-S12 — 42-VIN、1-AOUT PSR 返馳式轉換器單輸出評估模組
軟體
計算工具
LM25183-LM25184DESIGN-CALC — LM25183 和 LM25184 PSR 返馳快速入門設計工具
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PCB 佈局

LM25184EVM-S12 PCB Layout Files

SNVR476.ZIP (1452 KB)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (NGU) 8 Ultra Librarian
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