ZHCSCI6D May   2014  – January 2018 TPS6213013A-Q1 , TPS62130A-Q1 , TPS62133A-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用电路原理图 空白 空白 空白
      2.      效率与输出电流 空白
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Pulse Width Modulation (PWM) Operation
      2. 9.3.2  Power Save Mode Operation
      3. 9.3.3  100% Duty-Cycle Operation
      4. 9.3.4  Enable / Shutdown (EN)
      5. 9.3.5  Soft Start / Tracking (SS/TR)
      6. 9.3.6  Current Limit And Short Circuit Protection
      7. 9.3.7  Power Good (PG)
      8. 9.3.8  Pin-Selectable Output Voltage (DEF)
      9. 9.3.9  Frequency Selection (FSW)
      10. 9.3.10 Under Voltage Lockout (UVLO)
      11. 9.3.11 Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation Above TJ=125°C
      2. 9.4.2 Operation with VIN < 3V
      3. 9.4.3 Operation with Separate EN Control
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 TPS62130A-Q1 Point-Of-Load Step Down Converter
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 10.2.1.2.2 Programming The Output Voltage
          3. 10.2.1.2.3 External Component Selection
          4. 10.2.1.2.4 Inductor Selection
          5. 10.2.1.2.5 Output Capacitor
          6. 10.2.1.2.6 Input Capacitor
          7. 10.2.1.2.7 Soft Start Capacitor
          8. 10.2.1.2.8 Tracking Function
          9. 10.2.1.2.9 Output Filter And Loop Stability
        3. 10.2.1.3 Application Curves
    3. 10.3 System Examples
      1. 10.3.1 Regulated Power LED Supply
      2. 10.3.2 Inverting Power Supply
      3. 10.3.3 Active Output Discharge
      4. 10.3.4 Various Output Voltages
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 器件支持
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 相关链接
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 商标
    6. 13.6 静电放电警告
    7. 13.7 Glossary
  14. 14机械、封装和可订购信息

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • RGT|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

10.2.1.2.4 Inductor Selection

The inductor selection is affected by several effects like inductor ripple current, output ripple voltage, PWM-to-PSM transition point and efficiency. In addition, the inductor selected has to be rated for appropriate saturation current and DC resistance (DCR). Equation 7 and Equation 8 calculate the maximum inductor current under static load conditions.

spacing

Equation 7. TPS62130A-Q1 TPS62133A-Q1 TPS6213013A-Q1 SLVSAG7_eqilmax.gif

spacing

Equation 8. TPS62130A-Q1 TPS62133A-Q1 TPS6213013A-Q1 SLVSAG7_eqiripple.gif

where

  • IL(max) is the maximum inductor current,
  • ΔIL is the Peak to Peak Inductor Ripple Current,
  • L(min) is the minimum effective inductor value and
  • fSW is the actual PWM Switching Frequency.

space

Calculating the maximum inductor current using the actual operating conditions gives the minimum saturation current of the inductor needed. A margin of about 20% is recommended to add. A larger inductor value is also useful to get lower ripple current, but increases the transient response time and solution size as well. The following inductors have been used with the TPS6213xA-Q1 and are recommended for use:

Table 4. List of Inductors(1)

TypeInductance [µH] Current [A](2)Dimensions [LxBxH] mmMANUFACTURER
XFL4020-102ME_ 1.0 µH, ±20% 4.7 4 x 4 x 2.1 Coilcraft
XFL4020-152ME_ 1.5 µH, ±20% 4.2 4 x 4 x 2.1 Coilcraft
XFL4020-222ME_ 2.2 µH, ±20% 3.8 4 x 4 x 2.1 Coilcraft
IHLP1212BZ-11 1.0 µH, ±20% 4.5 3 x 3.6 x 2 Vishay
IHLP1212BZ-11 2.2 µH, ±20% 3.0 3 x 3.6 x 2 Vishay
SRP4020-3R3M 3.3µH, ±20% 3.3 4.8 x 4 x 2 Bourns
VLC5045T-3R3N 3.3µH, ±30% 4.0 5 x 5 x 4.5 TDK
(2) Lower of IRMS at 40°C rise or ISAT at 30% drop.

spacing

The inductor value also determines the load current at which Power Save Mode is entered:

Equation 9. TPS62130A-Q1 TPS62133A-Q1 TPS6213013A-Q1 SLVSAG7_eqipsm.gif

Using Equation 8, this current level can be adjusted by changing the inductor value.