ZHCSL91B October   2020  – March 2022 TPS25947

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 Timing Requirements
    7. 7.7 Switching Characteristics
      1.      15
    8. 7.8 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  Input Reverse Polarity Protection
      2. 8.3.2  Undervoltage Lockout (UVLO and UVP)
      3. 8.3.3  Overvoltage Lockout (OVLO)
      4. 8.3.4  Overvoltage Clamp (OVC)
      5. 8.3.5  Inrush Current, Overcurrent, and Short Circuit Protection
        1. 8.3.5.1 Slew Rate (dVdt) and Inrush Current Control
        2. 8.3.5.2 Circuit-Breaker
        3. 8.3.5.3 Active Current Limiting
        4. 8.3.5.4 Short-Circuit Protection
      6. 8.3.6  Analog Load Current Monitor
      7. 8.3.7  Reverse Current Protection
      8. 8.3.8  Overtemperature Protection (OTP)
      9. 8.3.9  Fault Response and Indication (FLT)
      10. 8.3.10 Auxiliary Channel Control (AUXOFF)
      11. 8.3.11 Power Good Indication (PG)
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Single Device, Self-Controlled
    3. 9.3 Typical Application
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
        1. 9.3.2.1 Device Selection
        2. 9.3.2.2 Setting Undervoltage and Overvoltage Thresholds
        3. 9.3.2.3 Setting Output Voltage Rise Time (tR)
        4. 9.3.2.4 Setting Power Good Assertion Threshold
        5. 9.3.2.5 Setting Overcurrent Threshold (ILIM)
        6. 9.3.2.6 Setting Overcurrent Blanking Interval (tITIMER)
      3. 9.3.3 Application Curves
    4. 9.4 Active ORing
    5. 9.5 Priority Power MUXing
    6. 9.6 USB PD Port Protection
    7. 9.7 Parallel Operation
  10. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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7.5 Electrical Characteristics

(Test conditions unless otherwise noted) –40°C ≤ TJ ≤ 125°C, VIN = 12 V, OUT = Open, VEN/UVLO = 2 V, VOVLO = 0 V for TPS259470x/4x, OVCSEL = 390 kΩ to GND for TPS259472x, RILM = 549 Ω , dVdT = Open, ITIMER = Open, AUXOFF = Open for TPS259470x, FLT = Open for TPS259470x, PGTH = Open for TPS259472x/4x, PG = Open for TPS259472x/4x. All voltages referenced to GND.
Test Parameter Description MIN TYP MAX UNITS
INPUT SUPPLY (IN)
VUVP(R) IN Supply UVP Rising threshold 2.44 2.53 2.64 V
VUVP(F) IN Supply UVP Falling threshold 2.35 2.42 2.55 V
IQ(ON) IN Supply Quiescent Current (TPS259470x) 428 610 µA
IN Supply Quiescent Current (TPS259472x) 426 610 µA
IN Supply Quiescent Current  (TPS259474x) 428 610 µA
IN Supply Quiescent Current during RCB, VOUT = VIN + 1 V 193 µA
IN Supply Current during OVC (TPS259472x) 445 625 µA
IQ(OFF) IN Supply disabled State Current (VSD(F) < VEN < VUVLO(F)) 73 130 µA
ISD IN Supply Shutdown Current (VEN < VSD(F)) 4.4 28.7 µA
IQ(OVLO) IN Supply OFF Current (OVLO condition), VOUT = VIN + 1 V 190 267 µA
IINLKG(IRPP) IN Supply Leakage Current (VIN = –14 V, VOUT = 0 V) –3.7 µA
IOUTLKG(OVLO) OUT Leakage Current (OVLO condition), VOUT > VIN 319 443 µA
ON RESISTANCE (IN - OUT)
RON VIN = 12 V, IOUT = 3 A, TJ = 25℃ 28.2 mΩ
2.7 ≤ VIN ≤ 23 V, IOUT = 3 A, –40℃ ≤ TJ ≤ 125℃ 45 mΩ
ENABLE/UNDERVOLTAGE LOCKOUT (EN/UVLO)
VUVLO(R) UVLO Rising threshold 1.183 1.20 1.223 V
VUVLO(F) UVLO Falling threshold 1.076 1.09 1.116 V
VSD(F) EN/UVLO Falling Threshold for lowest shutdown current 0.45 0.74 V
IENLKG EN/UVLO leakage current –0.1 0.1 µA
OVERVOLTAGE LOCKOUT (OVLO) - TPS259470x/4x
VOV(R) OVLO Rising threshold 1.183 1.20 1.223 V
VOV(F) OVLO Falling threshold 1.076 1.09 1.116 V
IOVLKG OVLO pin leakage current, 0.5 V < VOVLO  < 1.5 V –0.1 0.1 µA
OUTPUT VOLTAGE CLAMP (OUT) - TPS259472x
VOVC Overvoltage Clamp Threshold, OVCSEL = Shorted to GND 3.65 3.88 4.1 V
Overvoltage Clamp Threshold, OVCSEL = Open 5.25 5.74 6.2 V
Overvoltage Clamp Threshold, OVCSEL = 390 kΩ to GND 13.2 13.85 14.5 V
VCLAMP Output Voltage During Clamping, OVCSEL = Shorted to GND, IOUT = 10 mA 3.2 3.82 4.2 V
Output Voltage During Clamping, OVCSEL = Open, IOUT = 10 mA 5.0 5.68 6.12 V
Output Voltage During Clamping, OVCSEL = 390 kΩ to GND, IOUT = 10 mA 13.0 13.79 14.6 V
OVERCURRENT PROTECTION (OUT)
ILIM Overcurrent Threshold, RILM = 6.65 kΩ 0.425 0.500 0.575 A
Overcurrent Threshold, RILM = 3.32 kΩ 0.850 1.007 1.150 A
Overcurrent Threshold, RILM = 1.65 kΩ 1.800 2.028 2.200 A
Overcurrent Threshold, RILM = 750 Ω 3.960 4.452 4.840 A
Overcurrent Threshold, RILM = 549 Ω 5.400 6.068 6.600 A
IFLT Circuit Breaker Threshold, ILM Pin Open (Single point failure) 0.1 A
Circuit Breaker Threshold, ILM Pin Shorted to GND (Single point failure) 1.1 2.1 A
ISCGain Scalable Fast Trip Threshold (ISC) : ILIM Ratio 201 %
IFT Fixed Fast-trip current threshold 22.2 A
VFB VOUT threshold to exit Current Limit Foldback 1.9 V
OVERCURRENT FAULT TIMER (ITIMER)
VINT ITIMER pin internal pull-up voltage 2.3 2.57 2.72 V
RITIMER ITIMER pin internal pull-up resistance 15 kΩ
IITIMER ITIMER pin internal discharge current, IOUT > ILIM 1.2 1.8 2.5 µA
ΔVITIMER ITIMER discharge differential voltage threshold 1.286 1.51 1.741 V
OUTPUT LOAD CURRENT MONITOR (ILM)
GIMON Analog Load Current Monitor Gain (IMON : IOUT), IOUT = 0.5 A to 1 A, IOUT < ILIM 165 182 200 µA/A
Analog Load Current Monitor Gain (IMON : IOUT), IOUT = 1 A to 5.5 A, IOUT < ILIM 165 182 200 µA/A
REVERSE CURRENT BLOCKING (IN - OUT)
VFWD VIN – VOUT Forward regulation voltage, IOUT = 10 mA 4.7 16.9 mV
VREVTH VIN – VOUT threshold for fast BFET turn off (enter reverse current blocking) –36.45 –29.3 –22.3 mV
VFWDTH VIN – VOUT threshold for fast BFET turn on (exit reverse current blocking) 83 104.1 125 mV
IREVLKG(OFF) OUT Leakage Current during unpowered condition (VOUT  = 12 V, VIN = 0 V) 4.86 µA
IREVLKG Reverse leakage current, (VOUT – VIN) = 21.5 V 10.1 µA
IOUTLKG(RCB) OUT Leakage Current during ON state with RCB, VOUT = VIN + 1 V 234 µA
POWER GOOD INDICATION (PG) - TPS259472x/4x or AUXILIARY CHANNEL CONTROL  (AUXOFF) - TPS259470x
VPGD PG/AUXOFF pin voltage while de-asserted. VIN < VUVP(F), VEN < VSD(F), Weak pull-up (IPG = 26 μA) 0.67 1 V
PG/AUXOFF pin voltage while de-asserted, VIN < VUVP(F), VEN < VSD(F), Strong pull-up (IPG = 242 μA) 0.79 1 V
PG/AUXOFF pin voltage while de-asserted, VIN > VUVP(R) 0 V
IPGLKG PG/AUXOFF Pin leakage current, PG/AUXOFF asserted 0.9 3 µA
POWERGOOD THRESHOLD (PGTH) - TPS259472x/4x
VPGTH(R) PGTH Rising threshold 1.183 1.20 1.223 V
VPGTH(F) PGTH Falling threshold 1.076 1.09 1.116 V
IPGTHLKG PGTH leakage current –0.1 0.3 µA
FAULT INDICATION (FLT) - TPS259470x
IFLTLKG FLT leakage current –1 1 µA
RFLT FLT Internal Pull down resistance  12.3 Ω
OVERTEMPERATURE PROTECTION (OTP)
TSD Thermal Shutdown Rising Threshold, TJ↑ 154 °C
TSDHYS Thermal Shutdown Hysteresis, TJ↓ 10 °C
DVDT
IdVdt dVdt Pin Charging Current 0.81 2.21 3.82 µA
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