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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM5165-Q1

現行

具有超低 IQ 的汽車、3V-65V、150mA 同步降壓轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LMR36503-Q1 現行 針對尺寸和輕負載效率最佳化的汽車 3-V 至 65-V、0.3-A 降壓轉換器 Smaller footprint, lower IQ and lower EMI.

LM5165-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) 0.15 Vin (max) (V) 65 Vin (min) (V) 3 Vout (max) (V) 65 Vout (min) (V) 1.23 Features Adjustable current limit, Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 600 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 10 Duty cycle (max) (%) 100 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 0.15 Vin (max) (V) 65 Vin (min) (V) 3 Vout (max) (V) 65 Vout (min) (V) 1.23 Features Adjustable current limit, Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 600 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 10 Duty cycle (max) (%) 100 Type Converter
VSON (DRC) 10 9 mm² 3 x 3 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C5
  • Wide input voltage range of 3 V to 65 V
  • 10.5-µA no-load quiescent current
  • –40°C to 150°C junction temperature range
  • Fixed (3.3 V and 5 V) or adjustable output voltages
  • Meets EN55022 / CISPR 22 EMI standards
  • Integrated 2-Ω PMOS buck switch
    • Supports 100% duty cycle for low dropout
  • Integrated 1-Ω NMOS synchronous rectifier
    • Eliminates external rectifier diode
  • Programmable current limit setpoint (four levels)
  • Selectable PFM or COT mode operation
  • 1.223-V ±1% internal voltage reference
  • 900-µs internal or programmable soft start
  • Active slew rate control for low EMI
  • Monotonic start-up into prebiased output
  • No loop compensation or bootstrap components
  • Precision enable and input UVLO with hysteresis
  • Thermal shutdown protection with hysteresis
  • 10-pin VSON and VSSOP packages
  • Use TPSM265R1 module for faster time to market
  • Create a custom regulator design using WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C5
  • Wide input voltage range of 3 V to 65 V
  • 10.5-µA no-load quiescent current
  • –40°C to 150°C junction temperature range
  • Fixed (3.3 V and 5 V) or adjustable output voltages
  • Meets EN55022 / CISPR 22 EMI standards
  • Integrated 2-Ω PMOS buck switch
    • Supports 100% duty cycle for low dropout
  • Integrated 1-Ω NMOS synchronous rectifier
    • Eliminates external rectifier diode
  • Programmable current limit setpoint (four levels)
  • Selectable PFM or COT mode operation
  • 1.223-V ±1% internal voltage reference
  • 900-µs internal or programmable soft start
  • Active slew rate control for low EMI
  • Monotonic start-up into prebiased output
  • No loop compensation or bootstrap components
  • Precision enable and input UVLO with hysteresis
  • Thermal shutdown protection with hysteresis
  • 10-pin VSON and VSSOP packages
  • Use TPSM265R1 module for faster time to market
  • Create a custom regulator design using WEBENCH Power Designer

The LM5165-Q1 device is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 150-mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V or at an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse Frequency Modulation (PFM) mode is selected for optimal light-load efficiency or Constant On-Time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.

The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular output current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5165-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 10-pin VSON and VSSOP packages with 0.5-mm pin pitch.

The LM5165-Q1 device is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 150-mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V or at an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse Frequency Modulation (PFM) mode is selected for optimal light-load efficiency or Constant On-Time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.

The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular output current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5165-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 10-pin VSON and VSSOP packages with 0.5-mm pin pitch.
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類型 標題 日期
* Data sheet LM5165-Q1 Automotive 3-V to 65-V Input, 150-mA Synchronous Buck Converter With Ultra-Low IQ datasheet (Rev. C) PDF | HTML 2022年 12月 16日
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日
Application note Stability Analysis and Design of COT Type-3 Ripple Circuit 2019年 3月 20日
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 2019年 2月 5日
Technical article HEV/EV battery management systems explained simply PDF | HTML 2018年 5月 7日
Analog Design Journal Low-EMI buck powers a multivariable sensor transmitter with BLE connectivity 2016年 10月 24日
Technical article Powering smart sensor transmitters in industrial applications PDF | HTML 2016年 5月 2日
Analog Design Journal Low-IQ synchronous buck converter enables intelligent field-sensor applications 2016年 4月 26日
Technical article DC/DC converter datasheets - Quiescent current demystified: Part two PDF | HTML 2016年 4月 11日
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22日
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日

設計與開發

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開發板

LM5165EVM-HD-C50X — LM5165 低 IQ 同步降壓轉換器高密度 COT 評估模組

LM5165EVM-HD-C50X 高密度評估模組 (EVM) 的設計目的在於展示 LM5165 高性能、超小型且具備超低 IQ 的同步降壓 DC/DC 降壓轉換器的性能。該模組樣式設計採用微型元件封裝，元件數量少。它可在 3V 至 65V 的寬輸入電壓範圍內運作，提供固定的 5V 輸出，設定點準確度優於 2%。當輸入電壓低於輸出電壓設定點時，透過高側 MOSFET 以 100% 占空比傳導的方式，可實現低壓差性能。憑藉 LM5165 的恒定導通時間 (COT) 控制方案和二極體模擬，在 24V 輸入時，空載電源電流僅為 12μA。
使用指南: PDF
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開發板

LM5165EVM-HD-P50A — LM5165 低 IQ 同步降壓轉換器高密度 PFM 評估模組

LM5165EVM-HD-P50A 高密度評估模組 (EVM) 的設計目的在於展示 LM5165 高性能、超小型且具備超低 IQ 的同步降壓 DC/DC 降壓轉換器的性能。該模組樣式設計採用微型元件封裝，元件數量少。它可在 3V 至 65V 的寬輸入電壓範圍內運作，提供固定的 5V 輸出，設定點準確度優於 2%。當輸入電壓低於輸出電壓設定點時，透過高側 MOSFET 以 100% 占空比傳導的方式，可實現低壓差性能。憑藉 LM5165 的脈波頻率調變 (PFM) 控制方案與二極體模擬，在 24V 輸入時無負載電源電流僅為 12μA。

使用指南: PDF
TI.com 無法提供
模擬型號

LM5165 PSpice Transient Model (Rev. B)

SNVMAH3B.ZIP (133 KB) - PSpice Model
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模擬型號

LM5165 Unencrypted PSpice Transient Model (Rev. B)

SNVMAK5B.ZIP (4 KB) - PSpice Model
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模擬型號

LM5165X PSpice Transient Model (Rev. A)

SNVMAJ5A.ZIP (95 KB) - PSpice Model
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模擬型號

LM5165X Unencrypted PSpice Transient Model (Rev. A)

SNVMAK3A.ZIP (4 KB) - PSpice Model
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模擬型號

LM5165Y PSpice Transient Model (Rev. A)

SNVMAJ6A.ZIP (90 KB) - PSpice Model
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模擬型號

LM5165Y Unencrypted PSpice Transient Model (Rev. A)

SNVMAK4A.ZIP (4 KB) - PSpice Model
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計算工具

LM5165DESIGN-CALC — LM5165 DC/DC 轉換器設計工具

歡迎使用 LM5165 快速入門設計工具。此獨立工具協助電源供應工程師基於 LM5165 低 IQ 同步降壓 DC/DC 穩壓器設計 DC/DC 降壓轉換器。因此，使用者可以迅速達到最佳化的設計，以符合應用需求。
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參考設計

PMP22270 — 可調整輸出電壓、200-W SEPIC 電源供應參考設計

此 200-W SEPIC 轉換器參考設計提供非隔離式可調整 5 V 至 200 V 輸出電壓，最大輸出電流為 4 A。使用 0% 至 100% 的占空比、脈衝寬度調變 (PWM) 輸入來設定輸出電壓。
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSON (DRC) 10 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
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