SLUSDQ7B May   2020  – December 2023 TPS566231 , TPS566238

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 PWM Operation and D-CAP3™ Control Mode
      2. 6.3.2 Soft Start
      3. 6.3.3 Power Good
      4. 6.3.4 Large Duty Operation
      5. 6.3.5 Overcurrent Protection and Undervoltage Protection
      6. 6.3.6 Overvoltage Protection
      7. 6.3.7 UVLO Protection
      8. 6.3.8 Output Voltage Discharge
      9. 6.3.9 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Advanced Eco-mode Control
      2. 6.4.2 Force CCM Mode
      3. 6.4.3 Standby Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design with WEBENCH® Tools
        2. 7.2.2.2 Output Voltage Setpoint
        3. 7.2.2.3 Inductor Selection
        4. 7.2.2.4 Output Capacitor Selection
        5. 7.2.2.5 Input Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design with WEBENCH® Tools
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

5.5 Electrical Characteristics

TJ = -40oC to 125oC, VIN=12 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY VOLTAGE
VIN Input voltage range VIN 3 18 V
IVIN VIN supply current No load, VEN = 5V, non-switching (TPS566231/1P) 25 50 75 µA
No load, VEN = 5V, non-switching (TPS566238/8P) 275 375 475 µA
IINSDN VIN shutdown current No load, VEN = 0V 3.2 5 µA
UVLO
VUVLOVIN VIN UVLO threshold Wake up VIN voltage 2.62 2.74 2.86 V
Shut down VIN voltage 2.44 2.54 2.64 V
Hysteresis VIN voltage 200 mV
VCC OUTPUT
VCC VCC output voltage VIN = 12V 4.7 5 5.2 V
VIN = 3V 3 V
ICC VCC current limit VIN=12V 20 mA
VIN = 3V 5 mA
FEEDBACK VOLTAGE
VFB FB voltage TJ = 25°C 594 600 606 mV
TJ = –40°C to 125°C 591 600 609 mV
MOSFET
RDS (ON)HI High-side MOSFET Rds(on) TJ = 25°C, VIN ≥ 5V 20.8 mΩ
TJ = 25°C, VIN = 3V 25.8 mΩ
RDS (ON)LO Low-side MOSFET Rds(on) TJ = 25°C,VIN ≥ 5V 10.6 mΩ
TJ = 25°C, VIN = 3V 13 mΩ
IOCL Over current threshold Valley current set point 6.1 7.4 8.9 A
INOCL Negative over current threshold 2 3.4 5.3 A
DUTY CYCLE and FREQUENCY CONTROL
FSW Switching frequency  TJ = 25°C, VVOUT = 1.0V 600 kHz
TON(MIN) Minimum on-time(1) TJ = 25°C 50 90 ns
TOFF(MIN) Minimum off-time(1) VFB = 0.5V 100 ns
LOGIC THRESHOLD
VEN(ON) EN threshold high-level 1.13 1.19 1.25 V
VEN(OFF) EN threshold low-level 1.01 1.08 1.16 V
VENHYS EN hysteresis 110 mV
IEN EN pullup current VEN = 1.0V 2 uA
OUTPUT DISCHARGE and SOFT START
RDIS Discharge resistance TJ = 25°C, VVOUT = 0.5V, VEN = 0V 114 Ω
ISS Soft-start charge current TPS566231/TPS566238 5 6.5 8.5 uA
TSS Internal soft-start time TPS566231P/TPS566238P 0.93 1.9 2.9 ms
POWER GOOD (TPS566231P/TPS566238P)
TPGDLY PG start-up delay PG from low-to-high 1 ms
PG from high-to-low 32 us
VPGTH PG threshold VFB falling (fault) 80 85 90 %
VFB rising(good) 85 90 95 %
VFB rising (fault) 110 115 120 %
VFB falling (good) 105 110 115 %
VPG_L PG sink current capability IOL = 4mA 0.4 V
IPGLK PG leak current VPGOOD = 5.5V 1 uA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP OVP trip threshold 110 115 120 %
tOVPDLY OVP prop deglitch TJ = 25°C 32 us
VUVP UVP trip threshold 55 60 65 %
tUVPDLY UVP prop deglitch 256 us
tUVPDEL Output hiccup delay relative to SS time UVP detect 256 us
tUVPEN Output hiccup enable delay relative to
SS time		 UVP detect (TPS566231/TPS566238) 7 cycles
tUVPEN Output hiccup enable delay relative to
SS time		 UVP detect (TPS566231P/TPS566238P) 19 ms
THERMAL PROTECTION
TOTP OTP trip threshold(1) 160 °C
TOTPHSY OTP hysteresis(1) 25 °C
(1) No production test, specified by design.