ZHCSO68 March   2022 TPS629203

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Mode Selection and Device Configuration (MODE/S-CONF Pin)
      2. 8.3.2 Adjustable VO Operation (External Voltage Divider)
      3. 8.3.3 Selectable VO Operation (VSET and Internal Voltage Divider)
      4. 8.3.4 Smart Enable with Precise Threshold
      5. 8.3.5 Power Good (PG)
      6. 8.3.6 Output Discharge Function
      7. 8.3.7 Undervoltage Lockout (UVLO)
      8. 8.3.8 Current Limit and Short Circuit Protection
      9. 8.3.9 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Forced Pulse Width Modulation (PWM) Operation
      2. 8.4.2 Power Save Mode Operation (Auto PFM/PWM)
      3. 8.4.3 AEE (Automatic Efficiency Enhancement)
      4. 8.4.4 100% Duty-Cycle Operation
      5. 8.4.5 Starting into a Prebiased Load
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Programming the Output Voltage
        3. 9.2.2.3 External Component Selection
          1. 9.2.2.3.1 Output Filter and Loop Stability
          2. 9.2.2.3.2 Inductor Selection
          3. 9.2.2.3.3 Capacitor Selection
            1. 9.2.2.3.3.1 Output Capacitor
            2. 9.2.2.3.3.2 Input Capacitor
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Powering Multiple Loads
      2. 9.3.2 Inverting Buck-Boost (IBB)
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
      1. 11.2.1 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 第三方产品免责声明
      2. 12.1.2 Development Support
        1. 12.1.2.1 Custom Design With WEBENCH® Tools
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 接收文档更新通知
    4. 12.4 支持资源
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 术语表
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9.2.3 Application Curves

VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-2 Efficiency vs Output Current
VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-4 Switching Frequency vs Input Voltage
VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-6 Output Voltage vs Output Current
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-8 Efficiency vs Output Current
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-10 Switching Frequency vs Input Voltage
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-12 Output Voltage vs Output Current
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-14 Efficiency vs Output Current
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-16 Switching Frequency vs Input Voltage
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-18 Output Voltage vs Output Current
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-20 Efficiency vs Output Current
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-22 Switching Frequency vs Input Voltage
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-24 Output Voltage vs Output Current
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-26 Efficiency vs Output Current
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-28 Switching Frequency vs Input Voltage
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-30 Output Voltage vs Output Current
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-32 Efficiency vs Output Current
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-34 Switching Frequency vs Input Voltage
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-36 Output Voltage vs Output Current
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-38 Efficiency vs Output Current
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-40 Switching Frequency vs Input Voltage
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-42 Output Voltage vs Output Current
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-44 Efficiency vs Output Current
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-46 Switching Frequency vs Input Voltage
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-48 Output Voltage vs Output Current
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-50 Efficiency vs Output Current
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-52 Switching Frequency vs Input Voltage
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Auto PFM/PWM
Figure 9-54 Output Voltage vs Output Current
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-56 Efficiency vs Output Current
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-58 Switching Frequency vs Input Voltage
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Auto PFM/PWM
Figure 9-60 Output Voltage vs Output Current
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A Auto PFM/PWM
Figure 9-62 Start-Up Timing
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A Forced PWM
Figure 9-64 Start-Up into Prebiased Output
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 10 mA Auto PFM/PWM
Figure 9-66 Shutdown Timing with Output Discharge Enabled
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 10 mA Forced PWM
Figure 9-68 Shutdown Timing with Output Discharge Enabled
GUID-20220105-SS0I-7ZRP-T1WF-WQQQZHQBTWJD-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A to 0.3 A Auto PFM/PWM
Figure 9-70 Load Transient Response
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A Auto PFM/PWM
Figure 9-72 Output Voltage Ripple
GUID-20220105-SS0I-NGTK-JRRS-V2TZS0C80KJW-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.3 A Auto PFM/PWM
Figure 9-74 Output Voltage Ripple
GUID-20220105-SS0I-QSCB-RTHW-ZSG97KBRK2BX-low.png
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 0.3 A Auto PFM/PWM
Figure 9-76 Output Voltage Ripple
GUID-20220105-SS0I-QJF5-ZNPQ-6GCHL6QCLVPR-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.3 A Auto PFM/PWM
Figure 9-78 Input Voltage Ripple
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 0.6 V IO = 0.3 A Forced PWM
Figure 9-80 Bode Plot
VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-3 Efficiency vs Output Current
VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-5 Switching Frequency vs Input Voltage
VOUT = 5.0 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-7 Output Voltage vs Output Current
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-9 Efficiency vs Output Current
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-11 Switching Frequency vs Input Voltage
VOUT = 5.0 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-13 Output Voltage vs Output Current
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-15 Efficiency vs Output Current
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-17 Switching Frequency vs Input Voltage
VOUT = 3.3 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-19 Output Voltage vs Output Current
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-21 Efficiency vs Output Current
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-23 Switching Frequency vs Input Voltage
VOUT = 3.3 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-25 Output Voltage vs Output Current
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-27 Efficiency vs Output Current
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-29 Switching Frequency vs Input Voltage
VOUT = 1.8 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-31 Output Voltage vs Output Current
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-33 Efficiency vs Output Current
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-35 Switching Frequency vs Input Voltage
VOUT = 1.8 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-37 Output Voltage vs Output Current
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-39 Efficiency vs Output Current
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-41 Switching Frequency vs Input Voltage
VOUT = 1.2 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-43 Output Voltage vs Output Current
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-45 Efficiency vs Output Current
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-47 Switching Frequency vs Input Voltage
VOUT = 1.2 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-49 Output Voltage vs Output Current
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-51 Efficiency vs Output Current
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-53 Switching Frequency vs Input Voltage
VOUT = 0.6 V L = 2.2 μH Fsw = 2.5 MHz
Forced PWM
Figure 9-55 Output Voltage vs Output Current
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-57 Efficiency vs Output Current
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-59 Switching Frequency vs Input Voltage
VOUT = 0.6 V L = 3.3 μH Fsw = 1.0 MHz
Forced PWM
Figure 9-61 Output Voltage vs Output Current
GUID-20220105-SS0I-W47M-VSKG-PKHFBBDHBTTD-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.3 A Forced PWM
Figure 9-63 Start-Up Timing
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A Auto PFM/PWM
Figure 9-65 Shutdown Timing with Output Discharge Enabled
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 10 mA Auto PFM/PWM
Figure 9-67 Shutdown Timing with Output Discharge Disabled
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 10 mA Forced PWM
Figure 9-69 Shutdown Timing with Output Discharge Disabled
GUID-20220105-SS0I-WWXP-2PXS-4STQDR9HSTKT-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.1 A to 0.3 A Forced PWM
Figure 9-71 Load Transient Response
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0 A Forced PWM
Figure 9-73 Output Voltage Ripple
GUID-20220105-SS0I-PV2D-SJHQ-S6JDC6VHPFHZ-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.3 A Forced PWM
Figure 9-75 Output Voltage Ripple
GUID-20220105-SS0I-0PVN-JJHG-MHJ8CKBQPQ4T-low.png
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 3.3 V IO = 0.3 A Forced PWM
Figure 9-77 Output Voltage Ripple
GUID-20220105-SS0I-LRGR-2PGN-LMPWN1QQL48H-low.png
VIN = 12 V L = 2.2 μH Fsw = 2.5 MHz
VOUT = 3.3 V IO = 0.3 A Forced PWM
Figure 9-79 Input Voltage Ripple
VIN = 12 V L = 3.3 μH Fsw = 1.0 MHz
VOUT = 0.6 V IO = 0.3 A Forced PWM
Figure 9-81 Bode Plot