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LMQ61460-Q1

現行

具有整合式電容器的車用 3-V 至 36-V、6-V 低 EMI 同步降壓安靜轉換器

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產品規格表

LMQ61460-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, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 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, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package EMI features Fixed-frequency control, Integrated capacitors, Low parasitic packaging, Mitigated interference & noise technology – architecture 2 (MINT 2), Pinout optimization, Spread Spectrum, Switch-node waveshaping Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000007 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • Meets CISPR25 class 5 standard
    • Hotrod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged automotive applications
    • Supports 42-V load dump
    • 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
    • 90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
  • External bias option for improved efficiency
  • Pin compatible with:
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • Meets CISPR25 class 5 standard
    • Hotrod™ package minimizes switch node ringing
    • Internal bypass capacitors reduce EMI
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable switch node rise time
  • Designed for rugged automotive applications
    • Supports 42-V load dump
    • 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
    • 90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
  • External bias option for improved efficiency
  • Pin compatible with:

The LMQ61460-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. 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; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, 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 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 LMQ61460-Q1 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. 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; 42-V tolerance supports load dump for durations of 400 ms. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, 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 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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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet LMQ61460-Q1 Automotive 3-V to 36-V, 6 A, Low EMI Synchronous Step-Down Converter datasheet (Rev. C) PDF | HTML 2021年 1月 18日
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 2023年 8月 16日
White paper 了解提升功率密度的權衡與技術 (Rev. C) PDF | HTML 2023年 4月 27日
Technical article How buck regulators with integrated capacitors help lower EMI and save board space PDF | HTML 2022年 3月 16日
More literature Advanced Power-Converter Features for Reducing EMI PDF | HTML 2021年 12月 7日
Functional safety information LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) PDF | HTML 2020年 9月 9日
Technical article How device-level features and package options can help minimize EMI in automotive PDF | HTML 2020年 8月 21日
White paper 簡化汽車及工業領域的功 能安全認證 2020年 6月 9日

設計與開發

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開發板

LMQ61460EVM — 36-V、低 EMI 6-A、5-V 同步、400 kHz、降壓轉換器評估模組

LMQ61460EVM 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LMQ61460-Q1 同步降壓轉換器。  LMQ61460-Q1 採用搭載整合式電容器的小型解決方案，從而提供絕佳效率、低 IQ 與低 EMI。
使用指南: PDF | HTML
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模擬型號

LMQ61460AAS-Q1 PSpice Transient Model

SNVMC21.ZIP (112 KB) - PSpice Model
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模擬型號

LMQ61460AFS-Q1 PSpice Transient Model

SNVMC23.ZIP (131 KB) - PSpice Model
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設計工具

SNVR488 — LMQ61460EVM-400K Design Files

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設計工具

SNVR493 — LMQ61460 Design Tool

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VQFN-HR (RJR) 14 Ultra Librarian
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