SLVSGT9B February   2023  – June 2024 TPS25948

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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
    8. 6.8 Typical Characteristics
  8. 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 Active Current Limiting
        3. 7.3.3.3 Short-Circuit Protection
      4. 7.3.4 Analog Load Current Monitor
      5. 7.3.5 Reverse Current Protection
      6. 7.3.6 Overtemperature Protection (OTP)
      7. 7.3.7 Fault Response and Indication (FLT)
      8. 7.3.8 Supply Good Indication (SPLYGD/SPLYGD)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Single Device, Self-Controlled
    3. 8.3 Typical Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
        1. 8.3.2.1 Setting Overvoltage Threshold
        2. 8.3.2.2 Setting Output Voltage Rise Time (tR)
        3. 8.3.2.3 Setting Overcurrent Threshold (ILIM)
        4. 8.3.2.4 Setting Overcurrent Blanking Interval (tITIMER)
      3. 8.3.3 Application Curves
    4. 8.4 Active ORing
    5. 8.5 Priority Power MUXing
    6. 8.6 Parallel Operation
    7. 8.7 USB PD Port Protection
    8. 8.8 Power Supply Recommendations
      1. 8.8.1 Transient Protection
      2. 8.8.2 Output Short-Circuit Measurements
    9. 8.9 Layout
      1. 8.9.1 Layout Guidelines
      2. 8.9.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.8 Typical Characteristics

TPS25948 ON-Resistance vs TemperatureFigure 6-1 ON-Resistance vs Temperature
TPS25948 IN OFF state (UVLO) current vs TemperatureFigure 6-3 IN OFF state (UVLO) current vs Temperature
TPS25948 OUT Quiescent Current vs TemperatureFigure 6-5 OUT Quiescent Current vs Temperature
TPS25948 OUT Shutdown Current vs TemperatureFigure 6-7 OUT Shutdown Current vs Temperature
TPS25948 OUT Undervoltage Threshold vs TemperatureFigure 6-9 OUT Undervoltage Threshold vs Temperature
TPS25948 EN/UVLO Shutdown Threshold vs TemperatureFigure 6-11 EN/UVLO Shutdown Threshold vs Temperature
TPS25948 Overcurrent Threshold vs ILM ResistorFigure 6-13 Overcurrent Threshold vs ILM Resistor
TPS25948 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259481x)Figure 6-15 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259481x)
TPS25948 RCB - Forward Regulation Voltage vs TemperatureFigure 6-17 RCB - Forward Regulation Voltage vs Temperature
TPS25948 RCB - Forward Comparator Threshold vs TemperatureFigure 6-19 RCB - Forward Comparator Threshold vs Temperature
TPS25948 Reverse Leakage Current During OFF-StateFigure 6-21 Reverse Leakage Current During OFF-State
TPS25948 ITIMER Discharge Current vs TemperatureFigure 6-23 ITIMER Discharge Current vs Temperature
TPS25948 PG Low Voltage Without Input Supply vs TemperatureFigure 6-25 PG Low Voltage Without Input Supply vs Temperature
TPS25948 Start Up With Enable
VIN = 12 V, COUT = 220 μF, CdVdt = Open, VEN/UVLO stepped up to 2 V
Figure 6-27 Start Up With Enable
TPS25948 Input Hot-Plug
CIN = 0.1 μF, COUT = 220 μF, CdVdt = 10 nF, EN/UVLO connected to IN through resistor ladder, 12 V hot-plugged to IN
Figure 6-29 Input Hot-Plug
TPS25948 Inrush Current With Resistive and Capacitive Load
VIN = 12 V, COUT = 220 μF, ROUT = 2 Ω, CdVdt = 3300 pF, VEN/UVLO stepped up to 2 V
Figure 6-31 Inrush Current With Resistive and Capacitive Load
TPS25948 Overvoltage Lockout Response
VIN Overvoltage threshold set to 20 V, VIN ramped up from 12 V to 23 V
Figure 6-33 Overvoltage Lockout Response
TPS25948 Active Current Limit Response Followed by TSD
VIN = 12 V, CITIMER = 22 nF, COUT = 220 μF, ILIM set to 4.5 A, IOUT stepped from 3 A → 9 A
Figure 6-35 Active Current Limit Response Followed by TSD
TPS25948 Output Short-Circuit During Steady State (Zoomed In)
VIN = 12 V, ILIM set to 9 A, VEN/UVLO = 2 V, OUT stepped from Open → Short-circuit to GND
Figure 6-37 Output Short-Circuit During Steady State (Zoomed In)
TPS25948 Power Up Into Short-Circuit
VIN = 22 V, OUT short-circuit to GND, ILIM set to 9 A, VEN/UVLO stepped from 0 V to 2 V
Figure 6-39 Power Up Into Short-Circuit
TPS25948 IN Quiescent Current vs TemperatureFigure 6-2 IN Quiescent Current vs Temperature
TPS25948 IN Shutdown Current vs TemperatureFigure 6-4 IN Shutdown Current vs Temperature
TPS25948 OUT OFF State (UVLO) Current vs TemperatureFigure 6-6 OUT OFF State (UVLO) Current vs Temperature
TPS25948 IN Undervoltage Threshold vs TemperatureFigure 6-8 IN Undervoltage Threshold vs Temperature
TPS25948 EN/UVLO FET Turn OFF Threshold vs TemperatureFigure 6-10 EN/UVLO FET Turn OFF Threshold vs Temperature
TPS25948 OVLO Threshold vs TemperatureFigure 6-12 OVLO Threshold vs Temperature
TPS25948 Steady State Scalable Fast-trip Threshold: Current Limit Threshold (ILIM) Ratio vs Temperature (TPS259480x/2x)Figure 6-14 Steady State Scalable Fast-trip Threshold: Current Limit Threshold (ILIM) Ratio vs Temperature (TPS259480x/2x)
TPS25948 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259480x/2x)Figure 6-16 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259480x/2x)
TPS25948 RCB - Reverse Comparator Threshold vs TemperatureFigure 6-18 RCB - Reverse Comparator Threshold vs Temperature
TPS25948 OUT Leakage Current During ON-State Reverse Current BlockingFigure 6-20 OUT Leakage Current During ON-State Reverse Current Blocking
TPS25948 ITIMER Discharge Differential Voltage Threshold vs TemperatureFigure 6-22 ITIMER Discharge Differential Voltage Threshold vs Temperature
TPS25948 DVDT Charging Current vs TemperatureFigure 6-24 DVDT Charging Current vs Temperature
TPS25948 Time to Thermal Shut-Down During Inrush StateFigure 6-26 Time to Thermal Shut-Down During Inrush State
TPS25948 Start Up With Supply
VEN/UVLO = 2 V, COUT = 220 μF, CdVdt = 10 nF, VIN ramped up to 12 V
Figure 6-28 Start Up With Supply
TPS25948 Inrush Current With Capacitive Load
VIN = 12 V, COUT = 220 μF, CdVdt = 10 nF, VEN/UVLO stepped up to 2 V
Figure 6-30 Inrush Current With Capacitive Load
TPS25948 Inrush Current With Resistive and Capacitive Load
VIN = 12 V, COUT = 690 μF, ROUT = 4 Ω, CdVdt = 3300 pF, VEN/UVLO stepped up to 2 V
Figure 6-32 Inrush Current With Resistive and Capacitive Load
TPS25948 Transient Overcurrent Blanking Timer Response
VIN = 12 V, CITIMER = 22 nF, COUT = 220 μF, ILIM set to 4.5 A, IOUT ramped from 3 A → 8 A→ 3 A within 9 ms
Figure 6-34 Transient Overcurrent Blanking Timer Response
TPS25948 Output Short-Circuit During Steady State
VIN = 12 V, ILIM set to 9 A, VEN/UVLO = 2 V, OUT stepped from Open → Short-circuit to GND
Figure 6-36 Output Short-Circuit During Steady State
TPS25948 Power Up Into Short-Circuit
VIN = 12 V, OUT short-circuit to GND, ILIM set to 4.5 A, VEN/UVLO stepped from 0 V to 2 V
Figure 6-38 Power Up Into Short-Circuit