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LMG5126

現行

具有輸出電壓追蹤的 42V VIN、2.5MHz 同步 GaN 升壓轉換器

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產品規格表

LMG5126

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost Vin (max) (V) 42 Vin (min) (V) 2.5 Vout (max) (V) 60 Vout (min) (V) 6 Features Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Fixed PWM Mode, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking EMI features Frequency Dithering, Spread Spectrum Control mode current mode control Switching frequency (min) (kHz) 0.3 Switching frequency (max) (kHz) 2.5 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1100 Duty cycle (max) (%) 97 Type Converter (Integrated Switch)
Rating Catalog Topology Boost Vin (max) (V) 42 Vin (min) (V) 2.5 Vout (max) (V) 60 Vout (min) (V) 6 Features Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Fixed PWM Mode, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking EMI features Frequency Dithering, Spread Spectrum Control mode current mode control Switching frequency (min) (kHz) 0.3 Switching frequency (max) (kHz) 2.5 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1100 Duty cycle (max) (%) 97 Type Converter (Integrated Switch)
VQFN-FCRLF (VBT) 22 24.75 mm² 5.5 x 4.5
  • Input voltage 6.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 6.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
      • Boot refresh out of audio >20kHz
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Over voltage protection (65V, 50V, 35V, 25V)
  • Low shutdown ISD of 5µA typical (100uA maximum)
  • Low operating IQ of 1.5mA typical (2.5mA maximum)
  • Stacking with interleaved multiphase operation
    • Up to 4-devices without external clock
  • Switching frequency from 300kHz to 2.5MHz
    • Synchronization to external clock (SYNCIN)
    • Spread Spectrum (DRSS)
  • Dynamically selectable switching modes (FPWM, Diode emulation)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
  • Selectable current limit (29mV or 60mV)
  • Selectable delay time (DLY)
  • Power good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less RLF-22 package with wettable flanks
  • Create a custom design using the LMG5126 with the WEBENCH Power Designer
  • Input voltage 6.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 6.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
      • Boot refresh out of audio >20kHz
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Over voltage protection (65V, 50V, 35V, 25V)
  • Low shutdown ISD of 5µA typical (100uA maximum)
  • Low operating IQ of 1.5mA typical (2.5mA maximum)
  • Stacking with interleaved multiphase operation
    • Up to 4-devices without external clock
  • Switching frequency from 300kHz to 2.5MHz
    • Synchronization to external clock (SYNCIN)
    • Spread Spectrum (DRSS)
  • Dynamically selectable switching modes (FPWM, Diode emulation)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
  • Selectable current limit (29mV or 60mV)
  • Selectable delay time (DLY)
  • Power good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less RLF-22 package with wettable flanks
  • Create a custom design using the LMG5126 with the WEBENCH Power Designer

The LMG5126 is a stackable multiphase synchronous boost converter. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Up to 4 devices can be stacked with or without external clock.

VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after startup as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 6.5V. The fixed switching frequency is set between 300kHz and 2.5MHz via a resistor on the RT-pin or the SYNCIN clock. The switching modes FPWM or Diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, 120% input current limit, average inductor current monitor, over- and undervoltage protection or the thermal shutdown protect the device and the application.

The LMG5126 is a stackable multiphase synchronous boost converter. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Up to 4 devices can be stacked with or without external clock.

VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after startup as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 6.5V. The fixed switching frequency is set between 300kHz and 2.5MHz via a resistor on the RT-pin or the SYNCIN clock. The switching modes FPWM or Diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, 120% input current limit, average inductor current monitor, over- and undervoltage protection or the thermal shutdown protect the device and the application.
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類型 標題 日期
* Data sheet LMG5126 Wide-Input, 2.5MHz, Boost Converter datasheet (Rev. A) PDF | HTML 2025年 12月 9日
Certificate LMG5126EVM EU Declaration of Conformity (DoC). 2025年 9月 8日

設計與開發

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開發板

LMG5126EVM — LMG5126 評估模組

LMG5126 評估模組 (EVM) 展示了 LMG5126 寬輸入電壓同步 GaN 升壓轉換器的功能和性能。此 EVM 旨在簡化配置，讓使用者能夠在同一模組上評估多種不同應用。標準配置旨在提供穩定的 24V 輸出電壓，並以 400kHz 的頻率進行切換。輸出電壓可透過 ATRK、DTRK 針腳進行動態調整。

使用指南: PDF | HTML
要求
計算工具

LMG5126-CALC — LMG5126 quick start calculator

LMG5126 quick start calculator helps on design of the power stage, component selection and loop compensation.
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產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
  • LMG5126 — 具有輸出電壓追蹤的 42V VIN、2.5MHz 同步 GaN 升壓轉換器
硬體開發
開發板
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參考設計

PMP31404 — 3V 至 42V 同步 GaN 升壓轉換器參考設計

這款參考設計旨在實現高升壓比與高效率。這款設計可在寬廣的輸入電壓範圍內運作，最低輸入電壓為 3V，此電壓由內建氮化鎵 (GaN) 場效電晶體 (FET) 的 LMG5126 升壓轉換器提供。這款參考設計具備多項功能，例如展頻、電流限制、過熱自動開機、過電壓保護及欠壓鎖定。
Test report: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-FCRLF (VBT) 22 Ultra Librarian
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