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DC/DC 轉換器

LM61460-Q1

現行

車用 3-V 至 36-V、6-A、低雜訊同步降壓轉換器

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產品規格表

LM61460-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000008 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000008 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
VQFN-HR (RJR) 14 14 mm² (4 mm × 3.5 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • Hotrod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • Hotrod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies

The LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

The LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.
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LM61430-Q1 現行 車用 3-V 至 36-V、3-A、低雜訊同步降壓轉換器 Lower load current, but pin-to-pin

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 LM61460-Q1 Automotive 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. F) PDF | HTML 2021/6/22
白皮書 Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 2023/11/28
應用說明 How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 2023/8/16
類比設計期刊 Thermal design concerns for buck converters in high‐power automotive apps (Rev. A) PDF | HTML 2023/6/7
白皮書 Demystifying Input Supply Current in DC/DC Regulators:From Shutdown to Full Load (Rev. A) PDF | HTML 2023/6/6
應用說明 Using the LM61460-Q1 and LM61495-Q1 in USB Type-C Applications PDF | HTML 2021/12/15
更多文件說明 Advanced Power-Converter Features for Reducing EMI PDF | HTML 2021/12/7
應用說明 How to Migrate Between LM614xx and LM624xx Product Families PDF | HTML 2021/11/1
功能安全資訊 LM614xx-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B) PDF | HTML 2021/9/15
應用說明 Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021/7/26
技術文章 Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev PDF | HTML 2020/11/18
應用說明 PCB Thermal Design Tips for Automotive DC/DC Converters PDF | HTML 2020/11/12
技術文章 How device-level features and package options can help minimize EMI in automotive PDF | HTML 2020/8/21
技術文章 Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 2019/12/11
技術文章 Powering infotainment systems of the future PDF | HTML 2019/10/7
技術文章 How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 2019/5/9
技術文章 Effects of IC package on EMI performance PDF | HTML 2018/5/22
技術文章 Designing USB into challenging automotive applications PDF | HTML 2018/4/4
應用說明 Designing High Performance, Low-EMI, Automotive Power Supplies 2017/9/30

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

LM61460EVM — 36-V、低 EMI 6-A、5-V 同步、400-kHz、降壓轉換器評估模組

LM61460 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LM61460 同步降壓轉換器。  LM61460 在小型解決方案尺寸中提供卓越的效率、低 IQ 和低 EMI。
使用指南: PDF | HTML
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模擬型號

LM61460AAN-Q1 PSpice Transient Model (Rev. A)

SNVMBW2A.ZIP (99 KB) - PSpice 模型
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模擬型號

LM61460AAN-Q1 TINA-TI Startup Transient Model (Rev. A)

SNVMBX4A.TSC (187 KB) - TINA-TI Spice 模型
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模擬型號

LM61460AAN-Q1 TINA-TI Steady State Transient Model (Rev. A)

SNVMBX5A.TSC (176 KB) - TINA-TI Spice 模型
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模擬型號

LM61460AAS-Q1 PSpice Average Model

SNVMC61.ZIP (273 KB) - PSpice 模型
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模擬型號

LM61460AAS-Q1 PSpice Transient Model (Rev. A)

SNVMBW0A.ZIP (98 KB) - PSpice 模型
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模擬型號

LM61460AAS-Q1 TINA-TI Startup Transient Model (Rev. A)

SNVMBX2A.TSC (187 KB) - TINA-TI Spice 模型
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模擬型號

LM61460AAS-Q1 TINA-TI Steady State Transient Model (Rev. A)

SNVMBX3A.TSC (176 KB) - TINA-TI Spice 模型
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模擬型號

LM61460AFS-Q1 PSpice Transient Model (Rev. A)

SNVMBW1A.ZIP (106 KB) - PSpice 模型
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模擬型號

LM61460AFS-Q1 TINA-TI Startup Transient Model

SNVMC09.TSC (188 KB) - TINA-TI Spice 模型
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模擬型號

LM61460AFS-Q1 TINA-TI Steady State Transient Model

SNVMC10.TSC (177 KB) - TINA-TI Spice 模型
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計算工具

SNVR479 — LM61460 Design Tool

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參考設計

PMP21771 — 30-W 功率，適用汽車雙 USB Type-C® 充電埠參考設計

此參考設計採用 LM61460-Q1 同步降壓穩壓器，提供 6 A 電流至兩個 TPS2557-Q1 負載開關通道，以提供 30 W 總功率至雙 USB Type-C ® 充電埠。專為高電源效率與熱性能設計且體積精巧。此設計的切換頻率為 400 kHz，並可運用在汽車車載資訊娛樂系統應用中。
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參考設計

PMP22334 — 高效、低雜訊 5-V/3.3-V/1.8-V/1.1-V 車用顯示器參考設計

此參考設計適用於具有自訂外型尺寸的車用顯示器應用。此設計展示了 LM61460-Q1 搭配其 HotRod™ QFN 封裝的優異熱性能，以及在其展頻功能輔助下的低 EMI。它可以產生四個電壓分別為 5-V/3.3-V/1.1-V/1.8-V 的軌。專為需要熱性能與 EMI 性能的高效率及低雜訊應用而設計。
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參考設計

PMP30930 — EMI 最佳化降壓參考設計

此參考設計包含三個針對低 EMI 最佳化的分離式電路板。

三個電路板都有標籤

  • PMP30930 A 部分 (使用 LM63635-Q1、PW 封裝)
  • PMP30930 B 部分 (使用 LM63635-Q1、DR 封裝)
  • PMP30930 C 部分 (使用 LM61460-Q1)
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參考設計

TIPA-050009 — 使用 DDR4 的 AM62x 離散式電源供應解決方案

此電源供應設計展示了使用低成本離散式電壓穩壓器且適用於 AM62x 處理器的電源樹，並詳細說明 AM62x 不同電壓軌的特定通電/斷電順序要求。

 

AM62x 是異質 ARM® 處理器 Sitara™ 工業級系列的延伸，具備嵌入式 3D 繪圖加速、雙顯示介面，以及廣泛的周邊設備和網路選項。低成本 AM62x Sitara 處理器可協助客戶降低系統設計複雜性和成本。AM62x 適合各種工業應用，包括工業 HMI (人機介面)、EV 充電站、非接觸式建築物門禁和駕駛監控系統。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-HR (RJR) 14 Ultra Librarian
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