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LM65645-Q1

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針對功率密度和低 EMI 最佳化的車用 3V 至 65V、4.5A 同步降壓轉換器

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LM65645-Q1

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產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4.5 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 360 Switching frequency (max) (kHz) 2420 Features Adjustable switching frequency, Auto Mode, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Overcurrent protection, Power good, Spread Spectrum, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Vout (min) (V) 0.8 Vout (max) (V) 40 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4.5 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 360 Switching frequency (max) (kHz) 2420 Features Adjustable switching frequency, Auto Mode, Enable, Fixed Output, Forced PWM, Frequency synchronization, Low Noise, Overcurrent protection, Power good, Spread Spectrum, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Vout (min) (V) 0.8 Vout (max) (V) 40 Duty cycle (max) (%) 98
WQFN-FCRLF (RZT) 20 9.36 mm² 2.6 x 3.6
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Wide input voltage range: 3V to 65V
  • Designed for low EMI requirements
    • Facilitates CISPR 25 class 5 compliance
    • Mode pin configurable ±5% or ±10% dual-random spread spectrum reducing peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable 400kHz and 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Low minimum on time: 40ns (maximum)
    • Enables 36V to 3.3V conversion at 2.2MHz
  • High-efficiency power conversion at all loads
    • > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
    • 2.5µA PFM no-load input current
  • High power density
    • Internal compensation, current limit, and TSD
    • 3.6mm × 2.6mm, wettable flank, 20-pin package
    • ϴJA = 25.5°C/W (LM65645-Q1EVM)
  • Create a custom design using the LM656x5-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Wide input voltage range: 3V to 65V
  • Designed for low EMI requirements
    • Facilitates CISPR 25 class 5 compliance
    • Mode pin configurable ±5% or ±10% dual-random spread spectrum reducing peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable 400kHz and 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Low minimum on time: 40ns (maximum)
    • Enables 36V to 3.3V conversion at 2.2MHz
  • High-efficiency power conversion at all loads
    • > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
    • 2.5µA PFM no-load input current
  • High power density
    • Internal compensation, current limit, and TSD
    • 3.6mm × 2.6mm, wettable flank, 20-pin package
    • ϴJA = 25.5°C/W (LM65645-Q1EVM)
  • Create a custom design using the LM656x5-Q1 with the WEBENCH Power Designer

The LM656x5-Q1 are a family of automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V tolerant) reducing the need for external input surge protection. The LM656x5-Q1 comes with pin selectable fixed output voltages of 3.3V and 5V or in adjustable configuration. The low EMI operation is enabled with minimized loop inductance and optimized switch node slew rate. A pin-selectable ±5% or ±10% dual-random spread spectrum (DRSS) significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low. The current-mode control architecture with a 30ns typical minimum on-time allows high conversion ratios at high frequencies coupled with a fast transient response and excellent load and line regulation.

The LM656x5-Q1 are a family of automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V tolerant) reducing the need for external input surge protection. The LM656x5-Q1 comes with pin selectable fixed output voltages of 3.3V and 5V or in adjustable configuration. The low EMI operation is enabled with minimized loop inductance and optimized switch node slew rate. A pin-selectable ±5% or ±10% dual-random spread spectrum (DRSS) significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low. The current-mode control architecture with a 30ns typical minimum on-time allows high conversion ratios at high frequencies coupled with a fast transient response and excellent load and line regulation.
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類型 標題 日期
* Data sheet LM656x5-Q1 High Performance Power Converter, 3V to 65V , Pin-Compatible, 2.5A/3.5A/4.5A, Automotive , Low EMI Synchronous Buck Converter datasheet PDF | HTML 2024年 9月 5日
Application note Controller to Converter – Design Considerations for 24V and 48V Systems PDF | HTML 2024年 10月 2日
EVM User's guide LM65645EVM Evaluation Module PDF | HTML 2024年 7月 15日
Application note Reducing Conducted EMI in a Buck Converter for 48 V Automotive Applications PDF | HTML 2023年 12月 13日
E-book An Engineer’s Guide to Low EMI in DC/DC Regulators 2021年 4月 21日
Technical article Using DC/DCs buck converters to power modern safety features in commercial vehicle PDF | HTML 2020年 7月 27日
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 2019年 5月 9日
Technical article Top three qualities to consider when designing a video doorbell power supply PDF | HTML 2018年 9月 25日
White paper An overview of radiated EMI specifications for power supplies 2018年 6月 5日
Technical article Effects of IC package on EMI performance PDF | HTML 2018年 5月 22日
White paper An overview of conducted EMI specifications for power supplies 2018年 2月 1日

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開發板

LM65645EVM — LM65645 評估模組

LM65645 評估模組 (EVM) 可協助設計師評估 LM65645 廣泛輸入電壓降壓轉換器的運作及性能。LM65645 系列為易於使用的同步降壓轉換器系列，可從高達 65V 的輸入電壓供應最高 2.5A、3.5A 或 4.5A 的負載電流。
使用指南: PDF | HTML
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計算工具

LM656X5-CALC — LM656x5 Quick start design calculator

Design calculator for LM656x5 family of converters
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AC/DC 和 DC/DC 轉換器 (整合式 FET)
LM65645-Q1 — 針對功率密度和低 EMI 最佳化的車用 3V 至 65V、4.5A 同步降壓轉換器
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WQFN-FCRLF (RZT) 20 Ultra Librarian
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