SLVSER4B May   2020  – January 2022 TPS92200

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 Timing Requirements
    7.     Switching Characteristics
    8. 6.7 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 Peak-Current-Mode PWM Control
      2. 7.3.2 Setting LED Current
      3. 7.3.3 Internal Soft Start
      4. 7.3.4 Input Undervoltage Lockout
      5. 7.3.5 Bootstrap Regulator
      6. 7.3.6 Maximum Duty Cycle
      7. 7.3.7 Overcurrent Protection
        1. 7.3.7.1 High-Side MOSFET Overcurrent Protection
        2. 7.3.7.2 Low-Side MOSFET Sourcing Overcurrent Protection
        3. 7.3.7.3 Low-Side MOSFET Sinking Overcurrent Protection
      8. 7.3.8 Fault Protection
        1. 7.3.8.1 LED Open-Load Protection
        2. 7.3.8.2 LED+ and LED– Short Circuit Protection
        3. 7.3.8.3 LED+ Short Circuit to GND Protection
        4. 7.3.8.4 Sense-Resistor Open-Load Protection
        5. 7.3.8.5 Sense Resistor Short Circuit-to-GND Protection
        6. 7.3.8.6 Overvoltage Protection
        7. 7.3.8.7 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable and Disable the Device
      2. 7.4.2 TPS92200D1 PWM Dimming
      3. 7.4.3 TPS92200D1 Analog Dimming
      4. 7.4.4 TPS92200D2 Analog Dimming
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 TPS92200D1 12-V Input, 1.5-A, 2-Piece IR LED Driver With Analog Dimming
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Input Capacitor Selection
          3. 8.2.1.2.3 Output Capacitor Selection
            1. 8.2.1.2.3.1 Sense Resistor Selection
              1. 8.2.1.2.3.1.1 Other External Components Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 TPS92200D1 24-V Input, 1-A, 6-Piece WLED Driver With PWM Dimming
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Inductor Selection
          2. 8.2.2.2.2 Input Capacitor Selection
          3. 8.2.2.2.3 Output Capacitor Selection
            1. 8.2.2.2.3.1 Sense Resistor Selection
              1. 8.2.2.2.3.1.1 Other External Components Selection
        3. 8.2.2.3 Application Curves
      3. 8.2.3 5-V Input, 1-A, 1-Piece IR LED Driver With TPS92200D2
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Inductor Selection
          2. 8.2.3.2.2 Input Capacitor Selection
          3. 8.2.3.2.3 Output Capacitor Selection
            1. 8.2.3.2.3.1 Sense Resistor Selection
              1. 8.2.3.2.3.1.1 Other External Components Selection
        3. 8.2.3.3 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 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. TJ = –40°C to +125°C, VIN = 4 V to 30 V, (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY
VIN Input voltage range 4 30 V
VIN_UVLO VIN undervoltage lockout Rising VIN 3.5 3.7 3.9 V
Falling VIN 3.3 3.5 3.7 V
Hysteresis 0.2 V
ISD Shut down current from VIN VIN = 12 V, VDIM = 0 V 1 3 µA
IDISC Discharge current from SW and BOOT VIN floating, VDIM = 0 V 1 3 uA
IOP Normal operating current VDIM = 3.3 V 0.5 1 mA
DIMMING
VDIM_L Low-level input voltage 0.3 V
VDIM_H High-level input voltage 0.65 V
VANA Analog dimming range (TPS92200D1 only) 0.65 1.2 V
tDIM_ON1 DIM minimum on time to enable device (TPS92200D2 only) VDIM = 3.3 V 190 300 nS
tDIM_ON2 DIM minimum on time when PWM dimming (TPS92200D2 only) VDIM = 3.3 V 150 nS
tDIM_OFF DIM minimum off time to disable device VDIM = 0 V 36 mS
FEEDBACK AND ERROR AMPLIFIER
VFB_REF FB pin reference voltage VDIM = 3.3 V 96 99 102 mV
VFB_OVP FB pin over voltage protection threshold VDIM = 3.3 V 140 mV
VFB_DMAX FB reference voltage when maximum dimming input (TPS92200D1 only) VDIM = 1.2 V 99 mV
VFB_DMIN FB reference voltage when minimum dimming input (TPS92200D1 only) VDIM = 0.65 V 5 mV
FB reference voltage when minimum dimming duty cycle (TPS92200D2 only) DIM pin duty cycle <= 3% 1 mV
POWER STAGE
RHS High-side FET on resistance VIN ≥ 5 V 150 mΩ
RLS Low-side FET on resistance VIN ≥ 5 V 90 mΩ
CURRENT LIMIT
ILIM_HS High-side current limit 2.9 3.3 4 A
ILIM_LS_SOUR Low-side sourcing current limit 2.4 3 3.6 A
ILIM_LS_SINK Low-side sinking current limit 1.4 1.8 2.4 A
THERMAL PROTECTION
TTSD Thermal shutdown temperature 165 °C
Hysteresis 15 °C