JAJSPL2 October   2024 TPSM82916

ADVANCE INFORMATION  

  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 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Smart Config (S-CONF)
      2. 6.3.2  Device Enable (EN/SYNC)
      3. 6.3.3  Device Synchronization (EN/SYNC)
      4. 6.3.4  Spread Spectrum Modulation
      5. 6.3.5  Output Discharge
      6. 6.3.6  Undervoltage Lockout (UVLO)
      7. 6.3.7  Power-Good Output
      8. 6.3.8  Noise Reduction and Soft-Start Capacitor (NR/SS)
      9. 6.3.9  Current Limit and Short-Circuit Protection
      10. 6.3.10 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Fixed Frequency Pulse Width Modulation
      2. 6.4.2 Low Duty Cycle Operation
      3. 6.4.3 High Duty Cycle Operation (100% Duty Cycle)
      4. 6.4.4 Second Stage L-C Filter Compensation (Optional)
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 External Component Selection
          1. 7.2.2.2.1 Switching Frequency Selection
          2. 7.2.2.2.2 Output Capacitor Selection
          3. 7.2.2.2.3 Ferrite Bead Selection for Second L-C Filter
          4. 7.2.2.2.4 Input Capacitor Selection
          5. 7.2.2.2.5 Setting the Output Voltage
          6. 7.2.2.2.6 NR/SS Capacitor Selection
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 サード・パーティ製品に関する免責事項
      2. 8.1.2 Development Support
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 ドキュメントの更新通知を受け取る方法
    4. 8.4 サポート・リソース
    5. 8.5 Trademarks
    6. 8.6 静電気放電に関する注意事項
    7. 8.7 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
  • VCE|16
サーマルパッド・メカニカル・データ
発注情報

6.3.1 Smart Config (S-CONF)

This S-CONF pin configures the device based on the resistor value. This pin is read after EN/SYNC goes high. The device configuration cannot be changed during operation. The S-CONF value is re-read if EN is pulled below 200mV or if VIN falls below UVLO. Table 6-1 shows the configuration options of switching frequency, spread spectrum modulation, output discharge, and synchronization.

To make sure the internal circuit detects the resistor value correctly, minimize the distance between the resistor and the S-CONF pin and do not place any capacitors on the S-CONF pin.

Table 6-1 S-CONF Device Configuration Modes
S-CONF SWITCHING FREQUENCY SPREAD SPECTRUM OUTPUT DISCHARGE SYNC
VIN 2.2MHz OFF OFF No
GND 1MHz OFF OFF No
4.87kΩ 1.4MHz OFF OFF No
6.04kΩ 1.4MHz OFF OFF 1.2MHz to 1.6MHz
7.5kΩ 2.2MHz OFF OFF 1.9MHz to 2.42MHz
9.31 kΩ 1MHz OFF OFF 0.9MHz to 1.2MHz
11.5kΩ 1MHz Random OFF No
14.3kΩ 1.4MHz Random OFF No
18.2kΩ 2.2MHz Random OFF No
22.1kΩ 1MHz OFF ON No
27.4kΩ 1.4MHz OFF ON No
34kΩ 2.2MHz OFF ON No
42.2kΩ 1MHz OFF ON 0.9MHz to 1.2MHz
52.3kΩ 1.4MHz OFF ON 1.2MHz to 1.6MHz
64.9kΩ 2.2MHz OFF ON 1.9MHz to 2.42MHz
80.6kΩ 1MHz Random ON No
100kΩ 1.4MHz Random ON No
124kΩ 2.2MHz Random ON No