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AC/DC 和 DC/DC 控制器 (外部 FET)

LM5140-Q1

現行

寬 Vin 雙路 2.2MHz 低 Iq 同步降壓控制器

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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
功能相同，但引腳輸出與所比較的裝置不同
LM5143A-Q1 現行 車用 3.5-V 至 65-V、低 IQ、雙輸出、堆疊式同步降壓 DC-DC 控制器 Recommended for new designs.
LM5148-Q1 現行 具有超低 IQ 的車用 80V 同步降壓 DC/DC 控制器 Single output stackable to two phases, smaller footprint, lower IQ, and greater efficiency.

LM5140-Q1

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3.8 Vin (max) (V) 65 Iout (max) (A) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Automotive Vout (min) (V) 1.5 Vout (max) (V) 15 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed Iq (typ) (µA) 35 Duty cycle (max) (%) 96 Number of phases 2
Vin (min) (V) 3.8 Vin (max) (V) 65 Iout (max) (A) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Automotive Vout (min) (V) 1.5 Vout (max) (V) 15 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed Iq (typ) (µA) 35 Duty cycle (max) (%) 96 Number of phases 2
VQFNP (RWG) 40 36 mm² 6 x 6
  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following
    • Device Temperature Grade 1: –40°;C to +125°;C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Operating Range from 3.8 V to 65 V (70 V Absolute Maximum)
  • Two Interleaved Buck Controllers With:
    • VOUT1 Fixed 3.3 V, 5 V, or Adjustable from 1.5 V – 15 V, Accuracy ±1%
    • VOUT2 Fixed 5 V, 8 V, or Adjustable from 1.5 V – 15 V, Accuracy ±1%
  • Fixed 2.2-MHz or 440-kHz Switching Frequency, Accuracy ±7%
  • Optional Synchronization to an External Clock
  • SYNC Output Clock for Additional Converters
  • Shutdown Mode Current: 9 µA Typical
  • No Load Standby Current: 35 µA Typical (One Channel Operating)
  • Current Limit Threshold Programmable to 50 mV or 75 mV, Accuracy ±10%
  • Independent Enable Inputs for VOUT1 and VOUT2
  • Hiccup Mode Protection for Sustained Overload
  • Independent Power Good Outputs
  • High-Side and Low-Side Gate Drivers With Adjustable Slew Rate Control
  • Selectable Diode Emulation or Continuous Conduction at Light Load
  • 40-Pin VQFN Package With Wettable Flanks
  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following
    • Device Temperature Grade 1: –40°;C to +125°;C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Operating Range from 3.8 V to 65 V (70 V Absolute Maximum)
  • Two Interleaved Buck Controllers With:
    • VOUT1 Fixed 3.3 V, 5 V, or Adjustable from 1.5 V – 15 V, Accuracy ±1%
    • VOUT2 Fixed 5 V, 8 V, or Adjustable from 1.5 V – 15 V, Accuracy ±1%
  • Fixed 2.2-MHz or 440-kHz Switching Frequency, Accuracy ±7%
  • Optional Synchronization to an External Clock
  • SYNC Output Clock for Additional Converters
  • Shutdown Mode Current: 9 µA Typical
  • No Load Standby Current: 35 µA Typical (One Channel Operating)
  • Current Limit Threshold Programmable to 50 mV or 75 mV, Accuracy ±10%
  • Independent Enable Inputs for VOUT1 and VOUT2
  • Hiccup Mode Protection for Sustained Overload
  • Independent Power Good Outputs
  • High-Side and Low-Side Gate Drivers With Adjustable Slew Rate Control
  • Selectable Diode Emulation or Continuous Conduction at Light Load
  • 40-Pin VQFN Package With Wettable Flanks

The LM5140-Q1 is a dual synchronous buck controller intended for high voltage wide VIN step-down converter applications. The control method is based on current mode control. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting, and easier loop compensation.

The LM5140-Q1 features adjustable slew rate control to simplify compliance with the CISPR and automotive EMI requirements. The LM5140-Q1 operates at selectable switching frequencies of 2.2 MHz or 440 kHz with the two controller channels switching 180°; out of phase. In light or no-load conditions, the LM5140-Q1 operates in skip cycle mode for improved low power efficiency. The LM5140-Q1 includes a high voltage bias regulator with automatic switchover to an external bias supply to improve efficiency and reduce input current. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overloads, independent power good outputs, and independent enable inputs.

The LM5140-Q1 is a dual synchronous buck controller intended for high voltage wide VIN step-down converter applications. The control method is based on current mode control. Current mode control provides inherent line feedforward, cycle-by-cycle current limiting, and easier loop compensation.

The LM5140-Q1 features adjustable slew rate control to simplify compliance with the CISPR and automotive EMI requirements. The LM5140-Q1 operates at selectable switching frequencies of 2.2 MHz or 440 kHz with the two controller channels switching 180°; out of phase. In light or no-load conditions, the LM5140-Q1 operates in skip cycle mode for improved low power efficiency. The LM5140-Q1 includes a high voltage bias regulator with automatic switchover to an external bias supply to improve efficiency and reduce input current. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overloads, independent power good outputs, and independent enable inputs.
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類型 標題 日期
* Data sheet LM5140-Q1 Wide Input Range Dual Synchronous Buck Controller datasheet (Rev. A) PDF | HTML 2016年 12月 20日
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 2023年 8月 29日
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 2021年 4月 15日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 2017年 11月 13日
Technical article How to use dual buck controllers to power PMICs in automotive applications PDF | HTML 2017年 11月 8日
Technical article Create a power supply for an MRI application PDF | HTML 2017年 8月 14日
Analog Design Journal Designing the front-end DC/DC conversion stage to withstand automotive transient 2017年 1月 18日
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
Technical article How to use slew rate for EMI control PDF | HTML 2016年 3月 21日
Technical article How to extend a controller’s output-voltage range PDF | HTML 2016年 3月 20日
EVM User's guide LM5140-Q1 High Density EVM User’s Guide 2016年 2月 17日
Application note Maintaining Output Voltage Regulation During Automotive Cold-Crank with LM5140 2016年 1月 13日
EVM User's guide LM5140 EVM User's Guide 2016年 1月 12日
Analog Design Journal Benefits of a multiphase buck converter 2012年 1月 31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

LM5140RWGEVM — LM5140RWGEVM 雙路同步降壓轉換器 EVM

The LM5140RWGEVM evaluation board provides a fully functional buck power supply, employing peak current mode control. The evaluation board provides two independent outputs, a 3.3V @ 6A and a 5.0V @ 5A. The nonomal input voltage range is 8V-18V, with an extended operating range of 3.8V to 42V.  (...)

使用指南: PDF
TI.com 無法提供
開發板

LM5140RWGEVMHD — LM5140QRWGRQ1 雙路同步降壓轉換器高密度評估模組 (EVM)

The LM5140RWGEVMHD evaluation board provides a fully functional buck power supply, employing peak current mode control. The evaluation board provides two independent outputs, a 3.3V @ 5.0A and a 5.0V @ 5A.
使用指南: PDF
TI.com 無法提供
模擬型號

LM5140 PSpice Transient Model (Rev. B)

SNVMAJ7B.ZIP (91 KB) - PSpice Model
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計算工具

LM5140ADESIGN-CALC — LM5140 Dual Synchronous Buck Controller Design Tool - Quick Start Calculator

Welcome to the LM5140-1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC synchronous buck converter based on the LM5140-Q1 current-mode controller. As such, the user can expeditiously arrive at an optimized design to meet (...)

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產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM5140-Q1 — 寬 Vin 雙路 2.2MHz 低 Iq 同步降壓控制器
硬體開發
開發板
LM5140RWGEVM — LM5140RWGEVM 雙路同步降壓轉換器 EVM LM5140RWGEVMHD — LM5140QRWGRQ1 雙路同步降壓轉換器高密度評估模組 (EVM)
軟體
計算工具
LM5140ADESIGN-CALC — 適用於 LM5140-Q1 的快速入門計算機
下載
參考設計

PMP30267 — 適用於車載資訊娛樂系統的汽車電源參考設計

This reference design shows a complete power tree for automotive infotainment systems. The LM74700-Q1 provides reverse battery protection to the system and provides immunity to automotive transients specified in ISO 7637-2 and ISO 16750-2. The pre-booster with LM5150-Q1 provides a stable supply (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-01534 — 車用無電池雙相升壓轉換器參考設計

This reference design is a high power, wide input voltage range circuit that uses synchronous boost controllers in a dual-phase configuration outputting four (4) switchable 12-V rails that each can supply up to 2.5 A with diagnostic features; plus a dual synchronous buck that generates two high (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01553 — 支援 2.5-V 冷車啟動設定檔的車用無電池 VCM 參考設計

This reference design is a high-current, wide input voltage range circuit that can handle engine cold crank profile down to 2.5V. The dual-output voltages are 5V and 3.3V that support up to 10A for each output. The design is suitable for an automotive off-battery infotainment application that (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP15032 — 採用 LM5140-Q1 的車用高電流寬輸入電壓同步降壓控制器參考設計

PMP15032 demonstrates the operation and performance of the LM5140-Q1 synchronous buck controller in a high current dual-phase application. The PMP15032 operates over the input voltage range of 5.5 to 42V. The EVM provides a 5.0V output with a maximum load current of 45A (22.5A per phase).  (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00744 — 適用於車載資訊娛樂系統的 50W 系統級電源參考設計

TIDA-00744 is a 50-W system-level SMPS design for mid-power automotive infotainment systems.
The design has protections, such as load dump through TVS (ISO pulse testing), as well as reverse voltage (innovative smart diode with very low Iq) protection. Furthermore, all the controllers (boost and (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP10749 — 適用於車載資訊娛樂系統的 100W 系統級電源參考設計

PMP10749 is a 100-W system-level SMPS design for a higher-power automotive infotainment system. The design has protections, such as load dump through TVS (ISO pulse testing), as well as reverse voltage (innovative smart diode with very low Iq) protection. Furthermore, all the controllers (boost and (...)
Test report: PDF
電路圖: PDF
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