ZHCSBX0C december   2013  – may 2023 TPS65261 , TPS65261-1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  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 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  Adjusting the Output Voltage
      2. 7.3.2  Power Failure Detector
      3. 7.3.3  Enable and Adjusting Undervoltage Lockout
      4. 7.3.4  Soft-Start Time
      5. 7.3.5  Power Up Sequencing
        1. 7.3.5.1 External Power Sequencing
        2. 7.3.5.2 Automatic Power Sequencing
      6. 7.3.6  V7V Low Dropout Regulator and Bootstrap
      7. 7.3.7  Out-of-Phase Operation
      8. 7.3.8  Output Overvoltage Protection (OVP)
      9. 7.3.9  Slope Compensation
      10. 7.3.10 Overcurrent Protection
        1. 7.3.10.1 High-side MOSFET Overcurrent Protection
        2. 7.3.10.2 Low-side MOSFET Overcurrent Protection
      11. 7.3.11 Power Good
      12. 7.3.12 Adjustable Switching Frequency
      13. 7.3.13 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse Skipping MODE (PSM)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Output Inductor Selection
        2. 8.2.2.2 Output Capacitor Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Loop Compensation
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Parts
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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订购信息

6.5 Electrical Characteristics

TA = 25°C, VIN = 12 V, fSW = 600 kHz (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT SUPPLY VOLTAGE
VINInput voltage range4.518V
UVLOVIN undervoltage lockoutVIN rising44.254.5V
VIN falling3.53.754
Hysteresis500mV
IDDSDNShutdown supply currentEN1=EN2=EN3=MODE=0 V9.2µA
IDDQ_NSWInput quiescent current without buck1/2/3 switchingEN1=EN2=EN3=5 V, FB1=FB2=FB3=0.8 V605µA
IDDQ_NSW1EN1=5V, EN2=EN3=0 V, FB1=0.8V330µA
IDDQ_NSW2EN2=5 V, EN1=EN3=0V, FB2=0.8 V330µA
IDDQ_NSW3EN3=5V, EN1=EN2=0V, FB3=0.8V330µA
V7VV7V LDO output voltageV7V load current = 0 A66.36.6V
IOCP_V7VV7V LDO current limit175mA
FEEDBACK VOLTAGE REFERENCE
VFBFeedback voltageVCOMP = 1.2 V, TJ = 25°C0.5960.60.605V
VCOMP = 1.2 V, TJ = -40°C to 125°C0.5940.60.606V
VLINEREG_BUCKLine regulation-DCIOUT1 = 1.5 A, IOUT2 = 1 A, IOUT3 = 1 A
5 V < PVINx < 18 V		0.002%/V
VLOADREG_BUCKLoad regulation-DCIOUTx = (10–100%) × IOUTx_max0.02%/A
Buck1, Buck2, Buck3
VENXHEN1/2/3 high level input voltage1.21.26V
VENXLEN1/2/3 low level input voltage1.11.15V
IENX1EN1/2/3 pullup currentENx = 1 V3.6µA
IENX2EN1/2/3 pullup currentENx = 1.5 V6.6µA
IENhysHysteresis current3µA
ISSXSoft start charging current4.356µA
TON_MINMinimum on time80100ns
Gm_EAError amplifier trans-conductance–2 µA < ICOMPX < 2 µA300µS
Gm_PS1/2/3COMP1/2/3 voltage to inductor current GmILX = 0.5 A7.4A/V
ILIMIT1Buck1 peak inductor current limit4.335.16.02A
ILIMITSOURCE1Buck1 low side source current limit4.3A
ILIMITSINK1Buck1 low side sink current limit1.3A
ILIMIT2/3Buck2/3 peak inductor current limit2.63.13.73A
ILIMITSOURCE2/3Buck2/3 low side source current limit2.7A
ILIMITSINK2/3Buck2/3 low side sink current limit1A
THiccup_waitOvercurrent wait time256cycles
THiccup_reHiccup time before re-start8192cycles
Rdson_HS1Buck1 High-side switch resistanceVIN = 12 V100mΩ
Rdson_LS1Buck1 low-side switch resistanceVIN = 12 V65mΩ
Rdson_HS2Buck2 High-side switch resistanceVIN = 12 V140mΩ
Rdson_LS2Buck2 low-side switch resistanceVIN = 12 V95mΩ
Rdson_HS3Buck3 High-side switch resistanceVIN = 12 V140mΩ
Rdson_LS3Buck3 low-side switch resistanceVIN = 12 V95mΩ
POWER GOOD, MODE, POWER SEQUENCE
Vth_PGFeedback voltage thresholdFBx undervoltage Falling92.5%VREF
FBx undervoltage Rising95%VREF
FBx overvoltage Rising107.5%VREF
FBx overvoltage Falling105%VREF
TDEGLITCH(PG)_FPGOOD falling edge deglitch time128cycles
TRDEGLITCH(PG)_RPGOOD rising edge deglitch time512cycles
IPGPGOOD pin leakage0.05µA
VLOW_PGPGOOD pin low voltageISINK = 1 mA0.4V
VMODEHMODE high level input voltage1.21.26V
VMODELMODE low level input voltage1.11.15V
IMODE1MODE pullup currentMODE = 1 V3.6µA
IMODE2MODE pullup currentMODE = 1.5 V6.6µA
TpsdelayDelay time between bucks at automatic power sequencing modeMODE = 1.5 V1024cycles
POWER FAILURE DETECTOR
VDIVthVDIV threshold1.181.231.26V
IVDIVVDIV pullup currentVDIV = 1 V1µA
VDIV = 1.5 V2µA
IVDIVhysVDIV hysteresis current1µA
Tdeglitch_RRESET deglitch on the rising edge534cycles
Tdeglitch_FRESET deglitch on the falling edge121416cycles
OSCILLATOR
FSWSwitching frequencyROSC = 73.2 kΩ560600640kHz
FSW_range2502000kHz
THERMAL PROTECTION
TTRIP_OTPThermal protection trip pointTemperature rising160°C
THYST_OTPHysteresis20°C