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低壓側驅動器

LM5114

現行

具 4-V UVLO 與分離輸出的 7.6-A/1.3-A 單通道閘極驅動器

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產品規格表

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
UCC27611 現行 具 4-V UVLO 和 5-V 穩壓輸出的 4-A/6-A 單通道閘極驅動器 More recent driver with higher supply voltage capability, smaller package

LM5114

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Power switch GaNFET, MOSFET Peak output current (A) 7.6 Input supply voltage (min) (V) 4 Input supply voltage (max) (V) 12.6 Features Controllable Rise and Fall Times Operating temperature range (°C) -40 to 125 Rise time (ns) 12 Fall time (ns) 3 Propagation delay time (µs) 0.012 Input threshold CMOS, TTL Channel input logic Inverting, Non-Inverting Input negative voltage (V) 0 Rating Catalog Undervoltage lockout (typ) (V) 3 Driver configuration Low Side
Number of channels 1 Power switch GaNFET, MOSFET Peak output current (A) 7.6 Input supply voltage (min) (V) 4 Input supply voltage (max) (V) 12.6 Features Controllable Rise and Fall Times Operating temperature range (°C) -40 to 125 Rise time (ns) 12 Fall time (ns) 3 Propagation delay time (µs) 0.012 Input threshold CMOS, TTL Channel input logic Inverting, Non-Inverting Input negative voltage (V) 0 Rating Catalog Undervoltage lockout (typ) (V) 3 Driver configuration Low Side
SOT-23 (DBV) 6 8.12 mm² (2.9 mm × 2.8 mm) WSON (NGG) 6 9 mm² (3 mm × 3 mm)
  • Independent Source and Sink Outputs for
    Controllable Rise and Fall Times
  • 4-V to 12.6-V Single Power Supply
  • 7.6-A/1.3-A Peak Sink and Source Drive Current
  • 0.23-Ω Open-drain Pulldown Sink Output
  • 2-Ω Open-drain Pullup Source Output
  • 12-ns (Typical) Propagation Delay
  • Matching Delay Time Between Inverting and
    Noninverting Inputs
  • TTL/CMOS Logic Inputs
  • 0.68-V Input Hysteresis
  • Up to 14-V Logic Inputs (Regardless of VDD Voltage)
  • Low Input Capacitance: 2.5-pF (Typical)
  • –40°C to 125°C Operating Temperature Range
  • Pin-to-Pin Compatible With MAX5048
  • 6-Pin SOT-23
  • Independent Source and Sink Outputs for
    Controllable Rise and Fall Times
  • 4-V to 12.6-V Single Power Supply
  • 7.6-A/1.3-A Peak Sink and Source Drive Current
  • 0.23-Ω Open-drain Pulldown Sink Output
  • 2-Ω Open-drain Pullup Source Output
  • 12-ns (Typical) Propagation Delay
  • Matching Delay Time Between Inverting and
    Noninverting Inputs
  • TTL/CMOS Logic Inputs
  • 0.68-V Input Hysteresis
  • Up to 14-V Logic Inputs (Regardless of VDD Voltage)
  • Low Input Capacitance: 2.5-pF (Typical)
  • –40°C to 125°C Operating Temperature Range
  • Pin-to-Pin Compatible With MAX5048
  • 6-Pin SOT-23

The LM5114 is designed to drive low-side MOSFETs in boost-type configurations or to drive secondary synchronous MOSFETs in isolated topologies. With strong sink current capability, the LM5114 can drive multiple FETs in parallel. The LM5114 also has the features necessary to drive low-side enhancement mode Gallium Nitride (GaN) FETs. The LM5114 provides inverting and noninverting inputs to satisfy requirements for inverting and Noninverting gate drive in a single device type. The inputs of the LM5114 are TTL/CMOS Logic compatible and withstand input voltages up to 14 V regardless of the VDD voltage. The LM5114 has split gate outputs, providing flexibility to adjust the turnon and turnoff strength independently. The LM5114 has fast switching speed and minimized propagation delays, facilitating high-frequency operation. The LM5114 is available in a 6-pin SOT-23 package and a 6-pin WSON package with an exposed pad to aid thermal dissipation.

The LM5114 is designed to drive low-side MOSFETs in boost-type configurations or to drive secondary synchronous MOSFETs in isolated topologies. With strong sink current capability, the LM5114 can drive multiple FETs in parallel. The LM5114 also has the features necessary to drive low-side enhancement mode Gallium Nitride (GaN) FETs. The LM5114 provides inverting and noninverting inputs to satisfy requirements for inverting and Noninverting gate drive in a single device type. The inputs of the LM5114 are TTL/CMOS Logic compatible and withstand input voltages up to 14 V regardless of the VDD voltage. The LM5114 has split gate outputs, providing flexibility to adjust the turnon and turnoff strength independently. The LM5114 has fast switching speed and minimized propagation delays, facilitating high-frequency operation. The LM5114 is available in a 6-pin SOT-23 package and a 6-pin WSON package with an exposed pad to aid thermal dissipation.
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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 LM5114 Single 7.6-A Peak Current Low-Side Gate Driver datasheet (Rev. F) PDF | HTML 2015/11/30
應用說明 Review of Different Power Factor Correction (PFC) Topologies' Gate Driver Needs PDF | HTML 2024/1/22
應用說明 Using a Single-Output Gate-Driver for High-Side or Low-Side Drive (Rev. B) PDF | HTML 2023/9/8
應用說明 Benefits of a Compact, Powerful, and Robust Low-Side Gate Driver PDF | HTML 2021/11/10
Application brief External Gate Resistor Selection Guide (Rev. A) 2020/2/28
Application brief Understanding Peak IOH and IOL Currents (Rev. A) 2020/2/28
應用說明 Improving Efficiency of DC-DC Conversion through Layout 2019/5/7
Application brief How to overcome negative voltage transients on low-side gate drivers' inputs 2019/1/18
更多文件說明 Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 2018/10/29
Application brief Enable Function with Unused Differential Input 2018/7/11
Application brief Low-Side Gate Drivers With UVLO Versus BJT Totem-Pole 2018/3/16
白皮書 A comprehensive methodology to qualify the reliability of GaN products 2015/3/2
白皮書 Advancing Power Supply Solutions Through the Promise of GaN 2015/2/24

設計與開發

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開發板

LM5114BSDEVAL — LM5114 升壓閘極驅動器評估板

LM5114 是具備 7.6A/1.3A 峰值汲極/源極驅動電流能力的單一低壓側閘極驅動器。可用於驅動升壓類型配置中的標準 Si MOSFET 或強化模式 GaN FET，或是驅動隔離拓撲結構中的二次側同步 FET。LM5114 評估板的設計旨在為設計工程師提供全功能升壓 DC-DC 轉換器評估 LM5114。100V 強化模式 GaN FET (EPC2001) 可用作升壓電源開關。控制電路使用 100V 電流模式 PWM 控制器 LM5020 實作。評估板規格如下：

  • 輸入操作電壓：24V 至 66V
  • 輸出電壓：75V
  • 輸出電流：2A
  • 在 48V 時測量效率：97% @ 2A
  • 操作頻率：500kHz
  • (...)
使用指南: PDF
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模擬型號

LM5114A PSpice Transient Model

SNVM318.ZIP (33 KB) - PSpice 模型
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模擬型號

LM5114A TINA-TI Transient Reference Design

SNVM368.TSC (87 KB) - TINA-TI 參考設計
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模擬型號

LM5114A TINA-TI Transient Spice Model

SNVM367.ZIP (9 KB) - TINA-TI Spice 模型
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模擬型號

LM5114A Unencrypted PSpice Transient Model

SNVMAD7.ZIP (1 KB) - PSpice 模型
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模擬型號

LM5114B PSpice Transient Model

SNVM317.ZIP (30 KB) - PSpice 模型
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模擬型號

LM5114B TINA-TI Transient Reference Design

SNVM365.TSC (87 KB) - TINA-TI 參考設計
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模擬型號

LM5114B TINA-TI Transient Spice Model

SNVM366.ZIP (9 KB) - TINA-TI Spice 模型
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模擬型號

LM5114B Unencrypted PSpice Transient Model

SNVMAD8.ZIP (1 KB) - PSpice 模型
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參考設計

PMP22510 — 切換式電容器整合式降壓 (SCIB) 電源轉換器參考設計

此切換式電容器整合式降壓 (SCIB) 轉換器是一款高度最佳化設計，適用於高功率、高密度單輸出電源轉換器，可在廣泛 40 V 至 60 V 輸入軌範圍內運作，以產生每相高達 40A 負載電流的 8.0 V、5.0 V、3.3 V 或 1.8 V 軌。此參考設計將 CSD95490Q5MC 和 CSD95379Q3M NexFET 功率 MOSFET 級、UCC27212 驅動器 IC、電容器和電感器整合在 23mm x 23mm 尺寸的 PCB 配置中，並與多相降壓控制器 TPS53667 相容，可完成功率級切換功能。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 6 Ultra Librarian
WSON (NGG) 6 Ultra Librarian
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