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LM5160

現行

LM5160 寬輸入 65V、2A 同步降壓/Fly-Buck™ 轉換器

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產品規格表

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LM5012 現行 具有超低 IQ 的 6-V 至 100-V 輸入、2.5-A 非同步降壓 DC/DC 轉換器 Higher input voltage rating, easy to use SO-8 package and low IQ.

LM5160

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.5 Vout (max) (V) 60 Vout (min) (V) 2 Switch current limit (typ) (A) 2.5 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 92
Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.5 Vout (max) (V) 60 Vout (min) (V) 2 Switch current limit (typ) (A) 2.5 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 92
WSON (DNT) 12 16 mm² (4 mm × 4 mm)
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • LM5160A Allows External VCC Bias
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • LM5160A Allows External VCC Bias
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer

The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.

The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.
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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 LM5160, LM5160A Wide Input 65-V, 2-A Synchronous Buck / Fly-Buck™ DC/DC Converter datasheet (Rev. E) PDF | HTML 2018/10/12
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) PDF | HTML 2024/8/20
Application brief Faster Switching of Large Inductive Loads in Digital Output Modules PDF | HTML 2022/7/15
選擇指南 Current Sense Amplifiers (Rev. E) 2021/9/20
白皮書 Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019/4/10
應用說明 Stability Analysis and Design of COT Type-3 Ripple Circuit 2019/3/20
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 2019/2/5
技術文章 Why a wide VIN DC/DC converter is a good fit for high-cell-count battery-powered d PDF | HTML 2017/11/21
Application brief PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 2017/11/13
技術文章 Simplify your power storage design with these Fly-Buck™ power tips PDF | HTML 2017/9/13
技術文章 Where shrinking makes sense: improving isolated, split-rail power designs in indus PDF | HTML 2016/8/22
技術文章 Power Tips: Self-drive your synchronous rectifier PDF | HTML 2016/3/9
更多文件說明 Powering IGBT Drivers with Fly-Buck™ 2015/12/3
技術文章 Create a Fly-Buck™ converter in WEBENCH® Power Designer PDF | HTML 2015/10/9
白皮書 Designing isolated rails on the fly with Fly-Buck™ converters 2015/9/29
技術文章 What is behind isolated DC/DC converter voltage regulation? PDF | HTML 2015/8/31
技術文章 Lower EMI and quiet switching with the Fly-Buck™ topology PDF | HTML 2015/8/17
應用說明 Is Your IGBT Gate-Driver Power Supply Optimized 2015/3/12
類比設計期刊 Fly-Buck(TM) converter provides EMC and isolation in PLC applications 2015/1/29
應用說明 Design a Flybuck Solution with Optocoupler to Improve Regulation Performance 2015/1/19
應用說明 AN-2292 Designing an Isolated Buck (Fly-Buck) Converter (Rev. C) 2014/12/17
白皮書 Wide VIN power management ICs simplify white paper (Rev. A) 2013/9/19

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

LM5160DNTBKEVM — LM5160DNTBKEVM 廣泛輸入 65V、1.5A 同步降壓 DC-DC 轉換器

 

LM5160DNTBKEVM 評估板採用恆定導通時間 (COT) 操作原理，提供全功能降壓穩壓器。此評估板在 10V 至 60V 的輸入範圍內提供 5V 輸出。此電路可提供最高 1.5A 的負載電流。此應用電路圖設定為可由 24V 額定匯流排運作。額定切換頻率約為 300kHz。高壓側和低壓側 MOSFET 皆整合至 LM5160 內。

 

使用指南: PDF
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開發板

LM5160DNTFBKEVM — LM5160DNTFBKEVM Fly-Buck 隔離偏壓電源評估板

LM5160DNTFBK 評估模組的設計旨在以 24V 額定匯流排運作，其輸入電壓範圍為 18V 至 32V。  其能夠在隔離式輸出端，向負載提供 12V/400mA 的電源。  額定切換頻率設為 300kHz。  高壓側和低壓側 MOSFET 皆整合至 LM5160 內。  EVM 電路基板旨在展示低功耗隔離式偏壓應用的小型解決方案尺寸。

使用指南: PDF
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模擬型號

LM5160 PSpice Transient Model

SNVM692.ZIP (92 KB) - PSpice 模型
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模擬型號

LM5160 TINA-TI Flybuck Reference Design

SNVMB64.TSC (304 KB) - TINA-TI 參考設計
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模擬型號

LM5160 Unencrypted PSpice Transient Model

SNVM965.ZIP (3 KB) - PSpice 模型
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計算工具

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

此工具協助電源供應工程師根據規格選擇正確的隔離式 DC-DC 拓撲結構。根據選擇的拓撲結構，計算機還會推薦適合設計的 IC。

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計算工具

LM5160DNTBK-CALC — LM5160 Buck Regulator Quick Start Calculator

Welcome to the LM5160 Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5160 65V, 1.5A COT Buck Regulator. As such, the user can expeditiously arrive at an optimized design to meet the (...)

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計算工具

LM5160DNTFBK-CALC — LM5160 Fly-Buck Regulator Quick Start Calculator

Welcome to the LM5160 Fly-Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC Fly-Buck regulator based on the LM5160 65V, 1.5A COT Fly-Buck Regulator. As such, the user can expeditiously arrive at an optimized design (...)

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