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AC/DC 和 DC/DC 控制器 (外部 FET)

LM5175-Q1

現行

42-V 寬 VIN 4 開關同步降壓-升壓控制器、符合 AEC-Q100 資格

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
引腳對引腳且具備與所比較裝置相同的功能
LM5176-Q1 現行 通過 AEC-Q100 驗證的 55V 寬輸入電壓同步 4 開關降壓/升壓控制器 Improved version of LM5175-Q1

LM5175-Q1

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 55 Features Adjustable current limit, Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1650 Duty cycle (max) (%) 100
Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 55 Features Adjustable current limit, Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1650 Duty cycle (max) (%) 100
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature
      Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Single Inductor Buck-Boost Controller for Step-
    Up/Step-Down DC/DC Conversion
  • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum
  • Flexible VOUT Range: 0.8 V to 55 V
  • VOUT Short Protection
  • High Efficiency Buck-Boost Transition
  • Adjustable Switching Frequency
  • Optional Frequency Sync and Dithering
  • Integrated 2-A MOSFET Gate Drivers
  • Cycle-by-Cycle Current Limit and Optional Hiccup
  • Optional Input or Output Average Current Limiting
  • Programmable Input UVLO and Soft-Start
  • Power Good and Output Overvoltage Protection
  • Selectable CCM or DCM with Pulse Skipping
  • HTSSOP-28 Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature
      Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Single Inductor Buck-Boost Controller for Step-
    Up/Step-Down DC/DC Conversion
  • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum
  • Flexible VOUT Range: 0.8 V to 55 V
  • VOUT Short Protection
  • High Efficiency Buck-Boost Transition
  • Adjustable Switching Frequency
  • Optional Frequency Sync and Dithering
  • Integrated 2-A MOSFET Gate Drivers
  • Cycle-by-Cycle Current Limit and Optional Hiccup
  • Optional Input or Output Average Current Limiting
  • Programmable Input UVLO and Soft-Start
  • Power Good and Output Overvoltage Protection
  • Selectable CCM or DCM with Pulse Skipping
  • HTSSOP-28 Package

The LM5175-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175-Q1 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications.

The LM5175-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5175-Q1 features selectable Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.

The LM5175-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175-Q1 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications.

The LM5175-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5175-Q1 features selectable Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.
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技術文件

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類型 標題 日期
* Data sheet LM5175-Q1 42 V Wide VIN Synchronous 4-Switch Buck-Boost Controller datasheet PDF | HTML 2016年 4月 11日
White paper An overview of radiated EMI specifications for power supplies 2018年 6月 5日
EVM User's guide LM5175 4-Switch Buck-Boost EVM User Guide (Rev. A) 2018年 6月 4日
White paper An overview of conducted EMI specifications for power supplies 2018年 2月 1日
Technical article Buck-boost regulator benefits automotive conducted immunity PDF | HTML 2017年 5月 2日
White paper Buck-boost converter enables USB Power Delivery on the road 2016年 11月 3日
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
Technical article High Density PCB Layout of DC/DC Converters, Part 2 PDF | HTML 2015年 9月 16日
Technical article High Density PCB Layout of DC/DC Converters, Part 1 PDF | HTML 2015年 9月 12日
EVM User's guide LM5175 4-Switch Buck-Boost Converter High Density EVM 2015年 3月 3日
User guide LM5175 Wide VIN 4-Switch Buck-Boost Converter High Power Evaluation Module 2015年 2月 27日
White paper Wide VIN power management ICs simplify white paper (Rev. A) 2013年 9月 19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

LM5175EVM — LM5175EVM 寬輸入電壓單路電感降壓-升壓控制器評估模組

The LM5175EVM is a four-switch non-inverting buck-boost converter based on the LM5175 controller.  This converter is designed to operate with input voltage from 6V to 42V and provide a regulated 12V output for  load current up to 6A.  The high efficiency transition region (...)

使用指南: PDF
TI.com 無法提供
開發板

LM5175EVM-HD — LM5175EVM-HD 寬輸入電壓 4 開關降壓/升壓控制器評估模組

The LM5175EVM-HD high power density evaluation module (EVM) is a 4-switch synchronous buck-boost DC/DC regulator that employs synchronous rectification to achieve extremely high conversion efficiency in a small footprint at 72W output power.  Operating over a wide input voltage range of 5.5V (...)

使用指南: PDF
TI.com 無法提供
開發板

LM5175EVM-HP — LM5175EVM-HP 寬輸入電壓 4 開關降壓-升壓轉換器高功率 EVM

The LM5175EVM-HP high power EVM is fully assembled and tested platform for evaluating the operation and performance of the LM5175 4-switch buck-boost controller. The LM5175EVM-HP has an input voltage range from 6V to 36V, the output voltage is set as 12V using an external feedback resistor divider. (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM5175 PSpice Transient Model (Rev. D)

SNVM731D.ZIP (163 KB) - PSpice Model
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計算工具

LM5175QUICKSTART-CALC — LM5175 Quick Start Calculator

Welcome to the LM5175 quick-start design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5175 buck-boost PWM controller. As such, the user can expeditiously arrive at an optimized design to meet the application (...)

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支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM5175 — 42V 大範圍 Vin 4 開關同步降壓升壓控制器 LM5175-Q1 — 42-V 寬 VIN 4 開關同步降壓-升壓控制器、符合 AEC-Q100 資格
軟體
計算工具
LM5175QUICKSTART-CALC — LM5175 快速入門計算機
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參考設計

PMP10708 — 3.5 至 36Vin 6.5Vout @1.2A 同步四開關降壓升壓轉換器參考設計

PMP10708 is a 7.8W 4-switch buck-boost converter using the LM5175 controller IC. The design accepts an input voltage of 3.5Vin to 36Vin and provides an output of 6.5Vout capable of supplying 1.2A of current to the load. The design can operate as low as 3V during start-stop or other line transient (...)
Test report: PDF
電路圖: PDF
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HTSSOP (PWP) 28 Ultra Librarian
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