ZHCSQA4A April   2022  – July 2022 TPS22811

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and 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 Timing Requirements
    7. 6.7 Switching Characteristics
      1.      14
    8. 6.8 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 Undervoltage Lockout (UVLO and UVP)
      2. 7.3.2 Overvoltage Lockout (OVLO)
      3. 7.3.3 Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 7.3.3.1 Slew Rate (dVdt) and Inrush Current Control
        2. 7.3.3.2 Short-Circuit Protection
        3. 7.3.3.3 Active Current Limiting During Start-Up
      4. 7.3.4 Analog Load Current Monitor
      5. 7.3.5 Overtemperature Protection (OTP)
      6. 7.3.6 Fault Response
      7. 7.3.7 Power-Good Indication (PG)
      8. 7.3.8 Quick Output Discharge (QOD)
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Single Device, Self-Controlled
      2. 8.1.2 Parallel Operation
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting Undervoltage and Overvoltage Thresholds
        2. 8.2.2.2 Setting Output Voltage Rise Time (tR)
        3. 8.2.2.3 Setting Power-Good Assertion Threshold
        4. 8.2.2.4 Setting Analog Current Monitor Voltage (IMON) Range
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Transient Protection
    2. 9.2 Output Short-Circuit Measurements
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

6.8 Typical Characteristics

Figure 6-2 ON-Resistance vs Supply Voltage (TA = 25°C)
Figure 6-4 IN Quiescent Current vs Temperature
Figure 6-6 IN Shutdown Current vs Temperature
Figure 6-8 EN/UVLO Rising Threshold vs Temperature
Figure 6-10 EN/UVLO Shutdown Falling Threshold vs Temperature
Figure 6-12 EN/OVLO Falling Threshold vs Temperature
Figure 6-14 Analog Current Monitor Gain Accuracy
Figure 6-16 PG Pin Voltage vs Temperature (VIN = 0 V)
Figure 6-18 PGTH Falling Threshold vs Temperature
Figure 6-20 Quick Output Discharge Resistance vs Temperature
Figure 6-22 Time to Thermal Shutdown During Steady-State
GUID-20220405-SS0I-BGL8-9NFS-S8T6TDJZ3NPN-low.gif
VEN/UVLO = 3.3 V, COUT = 10 μF, CdVdt = Open, VIN ramped up to 12 V
Figure 6-24 Start- Up with Supply
GUID-20220405-SS0I-342P-9H8D-QQBLF4RQQJH9-low.gif
VIN = 12 V, COUT = 220 μF, ROUT = 5 Ω, CdVdt = 3300 pF, VEN/UVLO stepped up to 1.4 V
Figure 6-26 Inrush Current with Resistive and Capacitive Load
GUID-20220405-SS0I-CZVF-HM9J-8DNHMRLDX383-low.gif
VIN = 12 V, OUT stepped from open → short circuit to GND
Figure 6-28 Output Short Circuit During Steady-State (Zoomed In)
Figure 6-3 ON-Resistance vs Temperature (IOUT = 3 A)
Figure 6-5 IN OFF State (UVLO) Current vs Temperature
Figure 6-7 IN Undervoltage Threshold vs Temperature
Figure 6-9 EN/UVLO Falling Threshold vs Temperature
Figure 6-11 EN/OVLO Rising Threshold vs Temperature
Figure 6-13 Fixed Fast-Trip Threshold vs Temperature
Figure 6-15 DVDT Charging Current vs Temperature
Figure 6-17 PGTH Rising Threshold vs Temperature
Figure 6-19 PGTH Pin Leakage Current vs Temperature
Figure 6-21 Time to Thermal Shutdown During Inrush State
GUID-20220405-SS0I-WXRK-V9W9-NDN3B7BZZGJ7-low.gif
VIN = 12 V, COUT = 10 μF, CdVdt = Open, VEN/UVLO stepped up to 3.3 V
Figure 6-23 Start-Up with Enable
GUID-20220405-SS0I-PRXR-S7XM-6RX9DMFVF4LF-low.gif
VIN = 12 V, COUT = 220 μF, CdVdt = 3300 pF, VEN/UVLO stepped up to 1.4 V
Figure 6-25 Inrush Current with Capacitive Load
GUID-20220405-SS0I-9LWL-MMXK-L1BSZTGCKLNN-low.gif
VIN Overvoltage threshold set to 13.6 V using resistor ladder connected on OVLO pin, VIN ramped up from 12 V to 16 V
Figure 6-27 Overvoltage Lockout Response
GUID-20220405-SS0I-C32T-B3XL-XBRCSQG2G13N-low.gif
VIN = 12 V, COUT = Open, OUT short circuit to GND, RIMON = 649 Ω, VEN/UVLO stepped from 0 V to 3.3 V
Figure 6-29 Power Up into Short-Circuit