LM5137F-Q1

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車用、80V、100% 工作週期、雙通道功能安全同步降壓控制器

產品詳細資料

Vin (min) (V) 4.096 Vin (max) (V) 80 Iout (max) (A) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 70 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 12 Duty cycle (max) (%) 100 Number of phases 4 TI functional safety category Functional Safety-Compliant
Vin (min) (V) 4.096 Vin (max) (V) 80 Iout (max) (A) 40 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Buck Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 70 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 12 Duty cycle (max) (%) 100 Number of phases 4 TI functional safety category Functional Safety-Compliant
VQFN (RHA) 36 36 mm² 6 x 6
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Compliant targeted
    • Developed for functional safety applications
      • Three orderable part numbers for Capable, ASIL B, and ASIL D options
    • Documentation available to aid ISO 26262 system design up to ASIL D will be available upon production release
    • Systematic capability up to ASIL D targeted
    • Hardware integrity up to ASIL D targeted
  • Versatile dual synchronous buck DC/DC controller
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 60V
    • Current monitor output for each channel
    • Charge-pump gate drivers for 100% duty cycle
    • No-load sleep current of 12.7µA (typical)
    • Internal hiccup-mode overcurrent protection
  • Two interleaved synchronous buck channels
    • Dual channel or single-output multiphase
    • Stackable up to four phases
  • Designed for ultra-low EMI requirements
    • Dual Random Spread Spectrum (DRSS)
    • Switching frequency from 100kHz to 2.5MHz
  • VQFN-36 package with wettable flanks
  • Create a custom design using the LM5137F-Q1 with WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Compliant targeted
    • Developed for functional safety applications
      • Three orderable part numbers for Capable, ASIL B, and ASIL D options
    • Documentation available to aid ISO 26262 system design up to ASIL D will be available upon production release
    • Systematic capability up to ASIL D targeted
    • Hardware integrity up to ASIL D targeted
  • Versatile dual synchronous buck DC/DC controller
    • 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 60V
    • Current monitor output for each channel
    • Charge-pump gate drivers for 100% duty cycle
    • No-load sleep current of 12.7µA (typical)
    • Internal hiccup-mode overcurrent protection
  • Two interleaved synchronous buck channels
    • Dual channel or single-output multiphase
    • Stackable up to four phases
  • Designed for ultra-low EMI requirements
    • Dual Random Spread Spectrum (DRSS)
    • Switching frequency from 100kHz to 2.5MHz
  • VQFN-36 package with wettable flanks
  • Create a custom design using the LM5137F-Q1 with WEBENCH Power Designer

The LM5137F-Q1 is an 80V dual-channel buck controller offered frrom a family with three options for functional safety: Capable, ASIL B, or ASIL D. The device uses an interleaved, stackable, peak current-mode architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for high output current. A high-side switch minimum on-time of 15ns facilitates large step-down ratios, enabling the direct conversion from 12V, 24V or 48V automotive inputs to low-voltage rails for reduced system design cost and complexity. The LM5137F-Q1 continues operating during input voltage dips as low as 4V, at 100% duty cycle if needed.

Several features are included to simplify compliance with CISPR 25 and automotive EMI requirements. Adaptively timed, high-current MOSFET gate drivers minimize body diode conduction during switching transitions, reducing switching losses and improving thermal and EMI performance at high input voltage and high switching frequency. To reduce input capacitor ripple current and EMI filter size, 180° interleaved operation is provided for two outputs. A 90° out-of-phase clock output works well for cascaded, multi-channel or multiphase power stages. Resistor-adjustable switching frequency as high as 2.2MHz can be synchronized to an external clock source up to 2.5MHz to eliminate beat frequencies in noise-sensitive applications.

The 12.7µA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered automotive systems. Additional features of the LM5137F-Q1 include 150°C maximum junction temperature operation, user-selectable PFM mode for lower current consumption at light-load conditions, configurable soft-start functions, open-drain PG and FAULT flags for fault reporting and output monitoring, independent enable inputs, monotonic start-up into prebiased loads, integrated VCC bias supply regulator powered from VIN or BIAS1/VOUT1, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery. Current is sensed using the inductor DCR for highest efficiency or an optional shunt resistor for high accuracy.

The LM5137F-Q1 controller is qualified to AEC-Q100 grade 1 for automotive applications and comes in a 6mm × 6mm thermally-enhanced, 36-pin VQFN package with additional pin clearance for increased reliability and wettable flank pins to facilitate optical inspection during manufacturing. The wide input voltage range, low quiescent current consumption, high-temperature operation, cycle-by-cycle current limit, low EMI signature, and small design size provide an excellent point-of-load regulator solution for functional safety (FuSa) applications requiring enhanced robustness and durability.

The LM5137F-Q1 is an 80V dual-channel buck controller offered frrom a family with three options for functional safety: Capable, ASIL B, or ASIL D. The device uses an interleaved, stackable, peak current-mode architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for high output current. A high-side switch minimum on-time of 15ns facilitates large step-down ratios, enabling the direct conversion from 12V, 24V or 48V automotive inputs to low-voltage rails for reduced system design cost and complexity. The LM5137F-Q1 continues operating during input voltage dips as low as 4V, at 100% duty cycle if needed.

Several features are included to simplify compliance with CISPR 25 and automotive EMI requirements. Adaptively timed, high-current MOSFET gate drivers minimize body diode conduction during switching transitions, reducing switching losses and improving thermal and EMI performance at high input voltage and high switching frequency. To reduce input capacitor ripple current and EMI filter size, 180° interleaved operation is provided for two outputs. A 90° out-of-phase clock output works well for cascaded, multi-channel or multiphase power stages. Resistor-adjustable switching frequency as high as 2.2MHz can be synchronized to an external clock source up to 2.5MHz to eliminate beat frequencies in noise-sensitive applications.

The 12.7µA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered automotive systems. Additional features of the LM5137F-Q1 include 150°C maximum junction temperature operation, user-selectable PFM mode for lower current consumption at light-load conditions, configurable soft-start functions, open-drain PG and FAULT flags for fault reporting and output monitoring, independent enable inputs, monotonic start-up into prebiased loads, integrated VCC bias supply regulator powered from VIN or BIAS1/VOUT1, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery. Current is sensed using the inductor DCR for highest efficiency or an optional shunt resistor for high accuracy.

The LM5137F-Q1 controller is qualified to AEC-Q100 grade 1 for automotive applications and comes in a 6mm × 6mm thermally-enhanced, 36-pin VQFN package with additional pin clearance for increased reliability and wettable flank pins to facilitate optical inspection during manufacturing. The wide input voltage range, low quiescent current consumption, high-temperature operation, cycle-by-cycle current limit, low EMI signature, and small design size provide an excellent point-of-load regulator solution for functional safety (FuSa) applications requiring enhanced robustness and durability.

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類型 標題 日期
* Data sheet LM5137F-Q1 Automotive, 4V to 80V , 100% Duty Cycle Capable, Dual-Channel Synchronous Buck Controller Family for Functional Safety Applications datasheet PDF | HTML 2024年 9月 19日
Technical article 以 TI 功能安全合規降壓穩壓器為新一代 ADAS 處理器供電 PDF | HTML 2024年 11月 25日
Technical article 在汽車無電池降壓前置穩壓器設計中實現功能安全合規性 PDF | HTML 2024年 11月 19日
EVM User's guide LM25137-Q1 Evaluation Module User's Guide (Rev. A) PDF | HTML 2024年 8月 22日
Certificate LM25137F-Q1-EVM5D3 EU Declaration of Conformity (DoC) 2024年 7月 23日
E-book An Engineer’s Guide to Low EMI in DC/DC Regulators 2021年 4月 21日
White paper An overview of radiated EMI specifications for power supplies 2018年 6月 5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

LM25137F-Q1-EVM5D3 — LM25137F-Q1 評估模組

LM25137-Q1-EVM5D3 評估模組 (EVM) 旨在展示 LM(2)5137-Q1 雙同步降壓控制器,其適用於最高 ASIL D 或 SIL 3 的功能安全應用。EVM 可在 6.5V 至 36V 的廣泛輸入電壓範圍內運作,在每個輸出最高 20A 的負載電流下,以高於 1% 的設定點準確度提供 5V 和 3.3V 穩壓輸出。
使用指南: PDF | HTML
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計算工具

LM5137-LM25137-DESIGN-CALC — LM5137/-Q1 和 LM25137/-Q1 控制器快速入門設計工具

歡迎使用專為功能安全應用而設計的 LM5137、LM5137-Q1、LM25137 和 LM25137-Q1 控制器系列快速入門設計工具。此獨立工具會加速協助提供電源供應器工程師設計單輸出或雙輸出組態的 DC/DC 降壓穩壓器。因此,使用者可以迅速達到最佳化的設計,以符合應用需求。
PCB 佈局

LM5137-Q1 EVM PCB Layout Files

SNVMCE0.ZIP (1987 KB)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RHA) 36 Ultra Librarian

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