JAJSDT9A September   2017  – July 2018 TPS63710

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      標準アプリケーション
      2.      VOUT = -1.8V時の効率と出力電流との関係
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1. Table 1. Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Low Noise Reference System
      2. 7.3.2 Duty Cycle
      3. 7.3.3 Enable
      4. 7.3.4 Undervoltage Lockout
      5. 7.3.5 Thermal Shutdown
      6. 7.3.6 Power Good Output
    4. 7.4 Device Functional Modes
      1. 7.4.1 Soft-Start
      2. 7.4.2 VOUT Discharge
      3. 7.4.3 Current Limit
      4. 7.4.4 CCP Capacitor Precharge
      5. 7.4.5 PWM Operation
  8. 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 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Setting the Output Voltage
        3. 8.2.2.3 Inductor Selection
        4. 8.2.2.4 Capacitor Selection
          1. 8.2.2.4.1 CCP Capacitor
          2. 8.2.2.4.2 Input Capacitor
          3. 8.2.2.4.3 Output Capacitor
      3. 8.2.3 Application Curves
        1. 8.2.3.1 Parameter Measurement Information
    3. 8.3 System Examples
      1. 8.3.1 Typical Application for Powering the Negative Rail of a Gallium Nitride (GaN) Power Amplifier
      2. 8.3.2 Typical Application for Powering the Negative Rail of an ADC or DAC
      3. 8.3.3 Typical Application for Laser Diode Bias
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 デバイス・サポート
      1. 11.1.1 WEBENCH®ツールによるカスタム設計
      2. 11.1.2 デベロッパー・ネットワークの製品に関する免責事項
    2. 11.2 コミュニティ・リソース
    3. 11.3 商標
    4. 11.4 静電気放電に関する注意事項
    5. 11.5 Glossary
  12. 12メカニカル、パッケージ、および注文情報

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）
サーマルパッド・メカニカル・データ
発注情報

7.3.4 Undervoltage Lockout

An undervoltage lockout circuit prevents the device from starting up and operating, if the supply voltage is too low. The device automatically shuts down the converter when the VAUX voltage falls below the VUVLO threshold. There is hysteresis to prevent oscillation with high impedance supply voltage sources. Once the threshold plus hysteresis is exceeded, the device enters soft-start. Undervoltage lockout is sensed on the VAUX voltage, as this is the internal supply for the control loop and logic.

When VIN ramps down to a voltage too low to maintain the desired output voltage, the absolute value of the output voltage drops and the power good output goes low. When the output voltage level reaches the voltage on CCAP, at about 90% of the target output voltage, the device shuts down and initiates a re-start cycle. The TPS63710 then stays in the start-up state, until the input voltage is high enough to reach the desired output voltage.