SLUSEN2 April   2022 TPS564242 , TPS564247

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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 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 PWM Operation and D-CAP3 Control
      2. 7.3.2 Eco-Mode Control
      3. 7.3.3 Soft Start and Prebiased Soft Start
      4. 7.3.4 Overvoltage Protection
      5. 7.3.5 Large Duty Operation
      6. 7.3.6 Current Protection and Undervoltage Protection
      7. 7.3.7 Undervoltage Lockout (UVLO) Protection
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Eco-Mode Operation
      2. 7.4.2 FCCM Mode Control
  8. 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 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Resistors Selection
        3. 8.2.2.3 Output Filter Selection
        4. 8.2.2.4 Input Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

TJ = –40°C to 125°C, VIN = 12 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY VOLTAGE
VIN Input voltage range VIN 3 16 V
IVIN VIN supply current No load, VEN = 5 V, VFB = 0.65 V, non-switching, ECO version 120 µA
No load, VEN = 5 V, VFB = 0.65 V, non-switching, FCCM version 400 µA
IINSDN VIN shutdown current No load, VEN = 0 V 2 µA
UVLO
UVLO VIN undervoltage lockout Wake-up VIN voltage 2.75 2.92 3 V
UVLO VIN undervoltage lockout Shutdown VIN voltage 2.6 2.72 2.9 V
UVLO VIN undervoltage lockout Hysteresis VIN voltage 200 mV
FEEDBACK VOLTAGE
VREF FB voltage TJ = 25°C 594 600 606 mV
VREF FB voltage TJ = –40°C to 125°C 591 600 609 mV
MOSFET
RDS (ON)HI(1) High-side MOSFET RDS(ON) TJ = 25°C, VVIN ≥ 5 V 28.8 mΩ
High-side MOSFET RDS(ON) TJ = 25°C, VVIN = 3 V 30.5 mΩ
RDS (ON)LO Low-side MOSFET RDS(ON) TJ = 25°C, VVIN ≥ 5 V 15.4 mΩ
RDS (ON)LO Low-side MOSFET RDS(ON) TJ = 25°C, VVIN = 3 V 16.3 mΩ
IOCL_LS Overcurrent threshold Valley current setpoint 4.5 6 7.5 A
INOCL Negative overcurrent threshold 1.5 2.5 3.5 A
DUTY CYCLE and FREQUENCY CONTROL
FSW Switching frequency TJ = 25°C, VVOUT = 3.3 V 1200 kHz
TON(MIN)(1) Minimum on time TJ = 25°C 50 ns
TOFF(MIN)(1) Minimum off time VFB = 0.5 V 100 ns
LOGIC THRESHOLD
VEN(ON) EN threshold high level 1.07 1.18 1.33 V
VEN(OFF) EN threshold low level 0.95 1 1.2 V
VENHYS EN hystersis 180 mV
REN1 EN pulldown resistor 2 MΩ
SOFT START
tSS Internal soft-start time 1.39 ms
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP OVP trip threshold 115% 120% 125%
tOVPDLY OVP prop deglitch TJ = 25°C 24 μs
VUVP UVP trip threshold 55% 60% 65%
tUVPDLY UVP prop deglitch 256 μs
tUVPDEL Output hiccup delay relative to SS time UVP detect 256 μs
tUVPEN Output hiccup enable delay relative to
SS time		 UVP detect 13 ms
THERMAL PROTECTION
TOTP(2) OTP trip threshold 155 °C
TOTPHSY(2) OTP hysteresis 20 °C
(1) Specified by design
(2) Not production tested