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参数

Vin (Min) (V) 1.5 Vin (Max) (V) 60 Vout (Min) (V) 1.5 Vout (Max) (V) 300 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 0.49 Features Adjustable Current Limit, Enable, Frequency Synchronization, Improved max. duty cycle, Light Load Efficiency, Power Good, Spread Spectrum, UVLO Adjustable Duty cycle (Max) (%) 93 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (C) -40 to 150 open-in-new 查找其它 升压控制器(外部开关)

封装|引脚|尺寸

WSON (DSS) 12 6 mm² 3 x 2 open-in-new 查找其它 升压控制器(外部开关)

特性

  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Suited for wide input operating range car battery applications
    • 3.5-V to 60-V Operating range (65-V abs max)
    • 2.97-V to 16-V When BIAS = VCC
    • Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
    • Input transient protection up to 65 V
    • Minimized battery drain
      • Low shutdown current (IQ ≤ 2.6 µA)
      • Low operating current (IQ ≤ 490 µA)
  • Small solution size and low cost
    • Maximum switching frequency of 2.2 MHz
    • 12-Pin WSON package (3 mm × 2 mm) with wettable flanks
    • Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
    • Minimized undershoot during cranking (start-stop application)
  • EMI mitigation
    • Selectable dual random spread spectrum
    • Lead-less package
  • Higher efficiency with low-power dissipation
    • 100-mV ±7% accurate current limit threshold
    • Strong 1.5-A peak standard MOSFET driver
    • Supports external VCC supply
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
  • Integrated protection features
    • Constant peak current limiting over input voltage
    • Optional hiccup mode overload protection (see the Device Comparison Table)
    • Programmable line UVLO
    • OVP protection
    • Thermal shutdown
  • Accurate ±1% accuracy feedback reference
  • Programmable extra slope compensation
  • Adjustable soft start
  • PGOOD indicator
  • Create a custom design using the LM5156x-Q1 with the WEBENCH® power designer

All trademarks are the property of their respective owners.

open-in-new 查找其它 升压控制器(外部开关)

描述

The LM5156x-Q1 (LM5156-Q1 and LM51561-Q1) device is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The LM5156x-Q1 device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.

The internal VCC regulator also supports BIAS pin operation up to 60 V (65-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable with an external resistor from 100 kHz to 2.2 MHz. Switching at 2.2 MHz minimizes AM band interference and allows for a small solution size and fast transient response. To reduce the EMI of the power supply, the device provides a selectable dual random spread spectrum which reduces the EMI over the wide frequency range.

The device features a 1.5-A standard MOSFET driver and a low 100-mV current limit threshold. The device also supports the use of an external VCC supply to improve efficiency. Low operating current and pulse-skipping operation improve efficiency at light loads.

The device has built-in protection features such as cycle-by-cycle current limit, overvoltage protection, line UVLO, and thermal shutdown. Hiccup mode overload protection is available in the LM51561-Q1 device option. Additional features include low shutdown IQ, programmable soft start, programmable slope compensation, precision reference, power-good indicator, and external clock synchronization.

open-in-new 查找其它 升压控制器(外部开关)
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技术文档

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类型 标题 下载最新的英文版本 日期
* 数据表 LM5156x-Q1 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with Dual Random Spread Spectrum 数据表 2020年 6月 1日
功能安全信息 LM34966-Q1, LM5156x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution 2020年 10月 1日
应用手册 Dual Random Spread Spectrum 2020年 6月 19日
技术文章 How to add overvoltage protection to a synchronous boost controller 2018年 9月 17日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
LM5155EVM-FLY
LM5155EVM-FLY
59
说明
The LM5155EVM-FLY evaluation module showcases the features and performance of the LM5155 as a wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This evaluation module is (...)
特性
  • Input voltage range: 18V to 36V
  • Isolated output voltage 5V at 4A
  • Switching frequency 250kHz
  • Two layer PCB with single sided component population
  • Hiccup mode short circuit protection
评估板 下载
LM5155EVM-SEPIC
LM5155EVM-SEPIC
75
说明
The LM5155EVM-SEPIC evaluation module showcases the features and performance of the LM5155 as wide input non-synchronous SEPIC controller. The standard configuration is designed to provide a regulated output of 12V at up to 2A from an input of 3V to 42V, switching at 2.2 MHz.
特性
  • Input voltage range: 3V to 42V
  • Output voltage 12V, up to to 2A
  • Switching frequency 2.2 MHz
  • Two layer PCB with single sided component population
评估板 下载
59
说明

LM5156EVM-BST 评估模块展示了 LM5156-Q1 宽输入电压非同步升压控制器的特性和性能。标准配置旨在通过 3V 至 12V 的输入提供电流为 3A 的 12V 稳压输出,开关频率为 440kHz。

该 EVM 旨在简化配置,使用户能够在同一模块上评估许多不同的应用。功能包括外部时钟同步、可支持扩频振荡器抖动、可编程斜坡补偿、可调软启动、可编程逐周期电流限制和输出过压保护。

特性
  • 输入电压范围:3V 至 12V
  • 输出电压:12V(电流为 3A,具有 1% 精确基准电压)
  • 满载效率高于 95%
  • 开关频率为 440kHz
  • 外部时钟同步选项
  • 内部扩频运行
评估板 下载
59
说明
The LM5156HEVM-FLY evaluation module showcases the features and performance of the LM51561 (TSSOP package) as wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This (...)
特性
  • Input voltage range: 18V to 36V
  • Isolate output voltage 5V at 4A
  • Switching frequency 250kHz
  • Hiccup mode short circuit protection

设计工具和仿真

仿真模型 下载
SNVMBV9C.ZIP (180 KB) - PSpice Model
仿真工具 下载
PSPICE® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。 

在 PSpice for TI 设计和仿真工具中,您可以搜索 TI 器件、了解产品系列、打开测试台并对您的设计进行仿真,从而进一步分析选定的器件。您还可对多个 TI 器件进行联合仿真,以更好地展现您的系统。

除了一个完整的预加载模型库之外,您还可以在 PSPICE-FOR-TI 工具中轻松访问 TI 器件的全新技术资料。在您确认找到适合您应用的器件后,可访问 TI store 购买产品。 

借助 PSpice for TI,您可使用合适的工具来满足您在整个设计周期(从电路探索到设计开发和验证)的仿真需求。免费获取、轻松入门。立即下载 PSpice 设计和仿真套件,开始您的设计。

入门

  1. 申请使用 PSPICE-FOR-TI 仿真器
  2. 下载并安装
  3. 观看有关仿真入门的培训
特性
  • 利用 Cadence PSpice 技术
  • 带有一套数字模型的预装库可在最坏情形下进行时序分析
  • 动态更新确保您可以使用全新的器件型号
  • 针对仿真速度进行了优化,且不会降低精度
  • 支持对多个产品进行同步分析
  • 基于 OrCAD Capture 框架,提供对业界广泛使用的原理图捕获和仿真环境的访问权限
  • 可离线使用
  • 在各种工作条件和器件容许范围内验证设计,包括
    • 自动测量和后处理
    • Monte Carlo 分析
    • 最坏情形分析
    • 热分析
计算工具 下载
SNVC240.ZIP (5304 KB)
计算工具 下载
SNVR481.ZIP (1265 KB)

CAD/CAE 符号

封装 引脚 下载
WSON (DSS) 12 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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