SNVSC83B September   2022  – February 2023 TPSM365R3 , TPSM365R6

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Electrical Characteristics
    6. 8.6  System Characteristics
    7. 8.7  Typical Characteristics
    8. 8.8  Typical Characteristics: VIN = 12 V
    9. 8.9  Typical Characteristics: VIN = 24 V
    10. 8.10 Typical Characteristics: VIN = 48 V
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Input Voltage Range
      2. 9.3.2  Output Voltage Selection
      3. 9.3.3  Input Capacitors
      4. 9.3.4  Output Capacitors
      5. 9.3.5  Enable, Start-Up, and Shutdown
      6. 9.3.6  External CLK SYNC (with MODE/SYNC)
        1. 9.3.6.1 Pulse-Dependent MODE/SYNC Pin Control
      7. 9.3.7  Switching Frequency (RT)
      8. 9.3.8  Power-Good Output Operation
      9. 9.3.9  Internal LDO, VCC UVLO, and BIAS Input
      10. 9.3.10 Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      11. 9.3.11 Spread Spectrum
      12. 9.3.12 Soft Start and Recovery from Dropout
        1. 9.3.12.1 Recovery from Dropout
      13. 9.3.13 Overcurrent Protection (OCP)
      14. 9.3.14 Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Shutdown Mode
      2. 9.4.2 Standby Mode
      3. 9.4.3 Active Mode
        1. 9.4.3.1 CCM Mode
        2. 9.4.3.2 AUTO Mode - Light Load Operation
          1. 9.4.3.2.1 Diode Emulation
          2. 9.4.3.2.2 Frequency Reduction
        3. 9.4.3.3 FPWM Mode - Light Load Operation
        4. 9.4.3.4 Minimum On-time (High Input Voltage) Operation
      4. 9.4.4 Dropout
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 600-mA and 300-mA Synchronous Buck Regulator for Industrial Applications
        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  Output Voltage Setpoint
          3. 10.2.1.2.3  Switching Frequency Selection
          4. 10.2.1.2.4  Input Capacitor Selection
          5. 10.2.1.2.5  Output Capacitor Selection
          6. 10.2.1.2.6  VCC
          7. 10.2.1.2.7  CFF Selection
          8. 10.2.1.2.8  Power-Good Signal
          9. 10.2.1.2.9  Maximum Ambient Temperature
          10. 10.2.1.2.10 Other Connections
        3. 10.2.1.3 Application Curves
    3. 10.3 Power Supply Recommendations
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
        1. 10.4.1.1 Ground and Thermal Considerations
      2. 10.4.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Device Nomenclature
      3. 11.1.3 Development Support
        1. 11.1.3.1 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.5 Electrical Characteristics

Limits apply over the recommended operating junction temperature (TJ) range of –40°C to +125°C, unless otherwise stated. Minimum and maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: VIN = 24 V. (1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY VOLTAGE (VIN PIN)
VIN_R Minimum operating Input Voltage (Rising) Rising Threshold 3.4 3.6 V
VIN_F Minimum operating Input Voltage (Falling) Once Operating; Falling Threshold 2.45 3.0 V
IQ_13p5_Fixed Non-switching input current; measured at VIN pin (2) VIN = VEN = 13.5 V; VBIAS = 5.25 V, VMODE/SYNC = 0 V; Fixed Output Option 0.25 0.672 1.05 µA
IQ_13p5_Adj Non-switching input current; measured at VIN pin (2) VIN = VEN = 13.5 V; VFB = 1.5 V, VRT = 0 V; Adjustable Output Option 11 17 24 µA
IQ_24p0_Fixed Non-switching input current; measured at VIN pin (2) VIN = VEN = 24 V; VBIAS = 5.25 V, VMODE/SYNC = 0 V; Fixed Output Option 0.8 1.2 1.7 µA
IQ_24p0_Adj Non-switching input current; measured at VIN pin (2) VIN = VEN = 24 V; VFB = 1.5 V, VRT = 0 V; Adjustable Output Option 11 18 24 µA
IB_13p5 Current into BIAS pin (not switching) (3) VIN = VEN = 13.5 V, VBIAS = 5.25 V, VMODE/SYNC = 0 V; Fixed Output Option 14 17 22 µA
IB_24p0 Current into BIAS pin (not switching) (3) VIN = VEN = 24 V, VBIAS = 5.25 V, VMODE/SYNC = 0 V; Fixed Output Option 14 18 22 µA
ISD_13p5 Shutdown quiescent current; measured at VIN pin (2) VEN = 0 V; VIN = 13.5 V 0.5 1.3 µA
ISD_24p0 Shutdown quiescent current; measured at VIN pin (2) VEN = 0 V; VIN = 24 V 1 1.8 µA
ENABLE (EN PIN)
VEN-WAKE Enable wake-up threshold 0.4 V
VEN-VOUT Precision enable high level for VOUT 1.16 1.263 1.36 V
VEN-HYST Enable threshold hysteresis below VEN-VOUT 0.3 0.35 0.4 V
ILKG-EN Enable input leakage current VEN = 3.3 V 0.3 10 nA
INTERNAL LDO
VCC Internal VCC voltage Adjustable or Fixed Output Option; Auto mode 3.125 3.15 3.22 V
ICC Bias regulator current limit 65 240 mA
VCC-UVLO Internal VCC undervoltage lockout VCC rising under voltage threshold 3 3.3 3.65 V
VCC-UVLO-HYST Internal VCC under voltage lock-out hysteresis Hysteresis below VCC-UVLO 0.4 0.8 1.2 V
CURRENT LIMITS
ISC-0p3 Short circuit high side current limit (2) 0.3 A version (TPSM365R3) 0.42 0.5 0.575 A
ILS-LIMIT-0p3 Low side current limit (2) 0.3 A version (TPSM365R3) 0.27 0.35 0.42 A
IPEAK-MIN-0p3 Minimum Peak Inductor Current (2) Auto operation, 0.3 A version; Duty Cycle = 0%; (TPSM365R3) 0.065 0.09 0.113 A
ISC-0p6 Short circuit high side current limit (2) 0.6 A version (TPSM365R6) 0.87 1 1.11 A
ILS-LIMIT-0p6 Low side current limit (2) 0.6 A version (TPSM365R6) 0.6 0.7 0.8 A
IPEAK-MIN-0p6 Minimum Peak Inductor Current (2) Auto operation, 0.6 A version; Duty Cycle = 0%; (TPSM365R6) 0.127 0.19 0.227 A
IZC Zero Cross Current (2) Auto mode operation; (TPSM365R3) and (TPSM365R6) 0.01 0.025 A
IL-NEG Negative current limit (2) FPWM operation; (TPSM365R3) and (TPSM365R6) –0.8 –0.7 –0.6 A
POWER GOOD
VPG-OV PGOOD upper threshold - Rising % of BIAS or FB (adjustable or fixed output) 106 107 110 %
VPG-UV PGOOD lower threshold - Falling % of BIAS or FB (adjustable or fixed output) 93 94 96.5 %
VPG-HYS PGOOD hysteresis % of BIAS or FB (adjustable or fixed output) 1.3 1.8 2.3 %
VPG-VALID Minimum input voltage for proper PGOOD function 0.72 1 2 V
RPG-EN5p0 RDS(ON) PGOOD output VEN = 5 V, 1 mA pull-up current 20 40 70 Ω
RPG-EN0 RDS(ON) PGOOD output VEN = 0 V, 1 mA pull-up current 10 18 31 Ω
tRESET_FILTER PGOOD deglitch delay at falling edge 15 25 40 µs
tPGOOD_ACT Delay time to PGOOD high signal 1.7 1.956 2.16 ms
SOFT START
tSS Time from first SW pulse to VOUT/FB at 90% of set point 1.95 2.58 3.2 ms
OSCILLATOR (MODE/SYNC)
VSYNC-H SYNC input and mode high level threshold 1.8 V
VSYNC-L SYNC input and mode low level threshold 0.8 V
VSYNC-HYS SYNC input hysteresis 230 300 380 mV
tPULSE_H High duration needed to be recognized as a pulse 100 ns
tPULSE_L Low duration needed to be recognized as a pulse 100 ns
tSYNC High/Low signal duration to be recognized as a valid synchronization signal 6 9 12 µs
tMODE Time at one level needed to indicate FPWM or Auto Mode 18 µs
OSCILLATOR (RT)
fOSC_2p2MHz Internal oscillator frequency RT = GND 2.1 2.2 2.3 MHz
fOSC_1p0MHz Internal oscillator frequency RT = VCC 0.93 1 1.05 MHz
fADJ_400kHz RT = 39.2 kΩ (with RT variant only) 0.34 0.4 0.46 MHz
SWITCH NODE (SW)
tON-MIN Minimum switch on-time VIN = 24 V, IOUT = 0.6 A 40 57 86 ns
tOFF-MIN Minimum switch off-time 40 58 77 ns
tON-MAX Maximum switch on-time High-side timeout in dropout 7.6 9 9.8 µs
MOSFETS
RDSON-HS High-side MOSFET on-resistance Load = 0.3 A 560 920 mΩ
RDSON-LS Low-side MOSFET on-resistance Load = 0.3 A 280 480 mΩ
VBOOT-UVLO BOOT - SW UVLO threshold (3) 2.14 2.3 2.42 V
VOLTAGE REFERENCE
VOUT_Fixed3p3 Initial VOUT voltage accuracy for 3.3-V 3.3-V VOUT; VIN = 3.6 V to 65 V; FPWM Mode 3.25 3.3 3.34 V
VOUT_Fixed5p0 Initial VOUT voltage accuracy for 5-V 5-V VOUT; VIN = 5.5 V to 65 V; FPWM Mode 4.93 5 5.07 V
VFB Internal reference voltage accuracy VIN = 3.6 V to 65 V; FPWM Mode 0.985 1 1.01 V
IFB FB input current Adjsutable output, FB = 1 V 85 115 nA
(1) MIN and MAX limits are 100% production tested at 25ºC. Limits over the operating temperature range verified through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) This is the current used by the device open loop. It does not represent the total input current of the system when in regulation.
(3) When the voltage across the CBOOT capacitor falls below this voltage, the low side MOSFET is turn to recharge the boot capacitor