JAJSSU3A January   2024  – July 2024 LMG3100R017

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Propagation Delay and Mismatch Measurement
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Control Inputs
      2. 7.3.2 Start-up and UVLO
      3. 7.3.3 Bootstrap Supply Voltage Clamping
      4. 7.3.4 Level Shift
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 VCC Bypass Capacitor
        2. 8.2.2.2 Bootstrap Capacitor
        3. 8.2.2.3 Slew Rate Control
        4. 8.2.2.4 Use With Analog Controllers
        5. 8.2.2.5 Power Dissipation
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 ドキュメントの更新通知を受け取る方法
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 静電気放電に関する注意事項
    6. 9.6 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Package Information

パッケージ・オプション

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メカニカル・データ（パッケージ｜ピン）
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発注情報

8.2.1 Design Requirements

When designing a synchronous buck converter application that incorporates the LMG3100 power stage, some design considerations must be evaluated first to make the most appropriate selection. Among these considerations are the input voltages, passive components, operating frequency, and controller selection.Table 8-1 shows some sample values for a typical application. See Section 8.3, Section 8.4, and Section 8.2.2.5 for other key design considerations for the LMG3100.

Table 8-1 Design Parameters
PARAMETERSAMPLE VALUE
Half-bridge input supply voltage, VIN48 V
Output voltage, VOUT12 V
Output current8 A
VHB-HS bootstrap capacitor0.3 uF, X7R
Switching frequency1 MHz
Dead time8 ns
Inductor4.7 µH
ControllerLM5148