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DC/DC 轉換器

LM61495-Q1

現行

針對功率密度和低 EMI 進行最佳化的 10-A 車用降壓轉換器

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產品規格表

LM61495-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) 10 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, UVLO fixed, 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) 0.000005 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 10 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34.2 Vout (min) (V) 1 Features Enable, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, UVLO fixed, 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) 0.000005 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
VQFN-HR (RPH) 16 15.75 mm² (4.5 mm × 3.5 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Input voltage range from 3V to 36V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 25 class 5 compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable 400kHz and 2.2MHz fixed or adjustable from 200kHz – 2.2MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency design
    • 95% efficient for an 8A load
    • 5µA input current while unloaded in auto mode
    • < 1µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5mm × 3.5mm wettable flank QFN package
    • ϴJA = 21.6°C/W, measured on LM61495RPHEVM
  • Pin-to-pin compatible with LM61480T-Q1 and LM61495T-Q1 for dual-side cooling providing enhanced thermal performance
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Input voltage range from 3V to 36V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 25 class 5 compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable 400kHz and 2.2MHz fixed or adjustable from 200kHz – 2.2MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency design
    • 95% efficient for an 8A load
    • 5µA input current while unloaded in auto mode
    • < 1µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5mm × 3.5mm wettable flank QFN package
    • ϴJA = 21.6°C/W, measured on LM61495RPHEVM
  • Pin-to-pin compatible with LM61480T-Q1 and LM61495T-Q1 for dual-side cooling providing enhanced thermal performance

The LM6x4xx-Q1 buck regulator family are automotive-focused regulators providing either fixed or an adjustable output voltage which can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range of 3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device incorporates pin selectable spread spectrum, and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±4% (typical), drastically reducing peak emissions through a combination of triangular and pseudorandom modulation, and includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output, with filtering and delayed release, gives a true indication of system status. In auto mode the device automatically transitions between Fixed frequency Pulse Width Modulation (FPWM) and Pulse Frequency Modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.

The LM6x4xx-Q1 buck regulator family are automotive-focused regulators providing either fixed or an adjustable output voltage which can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range of 3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device incorporates pin selectable spread spectrum, and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±4% (typical), drastically reducing peak emissions through a combination of triangular and pseudorandom modulation, and includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output, with filtering and delayed release, gives a true indication of system status. In auto mode the device automatically transitions between Fixed frequency Pulse Width Modulation (FPWM) and Pulse Frequency Modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.
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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 LM6x4xx-Q1 Pin-Compatible, 6A, 8A, 10A, Automotive Buck Converter Optimized for Power Density and Low EMI datasheet (Rev. E) PDF | HTML 2025/10/7
白皮書 Design Considerations for 48V Automotive Body Motor Applications PDF | HTML 2026/2/17
功能安全資訊 LM62460-Q1, LM61480(T)-Q1, and LM61495(T)-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. B) PDF | HTML 2024/12/12
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
Product overview Mobileye EyeQ6L – Semi Discrete Power Tree PDF | HTML 2022/8/5
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 Configuring LM62460 for Dual-Phase Operation PDF | HTML 2021/8/12
技術文章 Lowering audible noise in automotive applications with TI’s DRSS technology PDF | HTML 2021/3/18
類比設計期刊 The pros and cons of spread‐spectrum implementation methods in buck regulators 2021/3/18
技術文章 Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev PDF | HTML 2020/11/18

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

LM61495RPHEVM — LM61495-Q1 同步 10-A、400-kHz 降壓轉換器評估模組

LM61495RPHEVM 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LM61495-Q1 同步降壓轉換器。  LM61495-Q1 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

LM61495-Q1 PSpice Transient Model (Rev. A)

SNVMC15A.ZIP (224 KB) - PSpice 模型
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計算工具

SNVR498 — LM61495-Q1 Design Tool

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參考設計

PMP23241 — 具有可調整輸出的同步反相降壓升壓轉換器參考設計

此參考設計運用 LM61495-Q1 同步降壓穩壓器。此裝置配備內部頂部與底部場效電晶體 (FET)，並配置為同步反相降壓升壓轉換器，以提供 –7.5V 與 –12V 之間的可調式輸出，能從 9V 至 18V 輸入提供最大 4A 電流至負載。透過將類比電壓訊號提供至參考 GND 的 Vcntl_1 (TP4) 測試點來調整輸出電壓。0V 和 5V 之間的控制電壓對應於 –12V 和 –7.5V 之間的輸出電壓。

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參考設計

TIPA-050022 — Mobileye EQ6L 分離式電源供應設計

此電源設計是適用於 Mobileye EyeQ6Lite® SoC 的 TI 半離散式電源樹狀結構測試報告摘要。自動駕駛輔助系統 (ADAS) 等汽車應用採用 Mobileye EyeQ6L 等 ADAS 網域控制器處理器。這些精密的處理器需要在極低的電壓下具有非常高的電流。這些處理器也需要非常快速的輸出電壓暫態響應，以因應處理器負載電流的步進變化。

此電源供應器設計以有效率、符合成本效益的方式滿足快速暫態響應的嚴格要求。下圖所示的半離散方法，結合了 PMIC 和離散式穩壓器，可將負載點轉換器放在最佳位置，同時仍提供具有最小輸出電容的小型解決方案尺寸。

PMIC (...)

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VQFN-HR (RPH) 16 Ultra Librarian
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