SLUUCQ0A may   2023  – june 2023 TPS922052 , TPS922053 , TPS922054 , TPS922055

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Warnings and Cautions
  6. 3Description
    1. 3.1 Typical Applications
  7. 4Test Setup
    1. 4.1 Connector Description
    2. 4.2 Input/Output Connection
  8. 5Typical Characteristics Curves and Waveforms
    1. 5.1 Efficiency
    2. 5.2 Line Regulation
    3. 5.3 Load Regulation
    4. 5.4 Analog Dimming Performance
    5. 5.5 PWM Dimming Performance
    6. 5.6 Hybrid Dimming Performance
    7. 5.7 Flexible Dimming Performance
  9. 6Schematic
  10. 7Layout
  11. 8Bill of Materials
  12. 9Revision History

3.1 Typical Applications

This design describes an application of the TPS92205x as an LED driver using the following specifications. For applications with a different input voltage range or different output voltage and current, please refer to the TPS92205x datasheet.

Table 3-1 lists the electrical performance specifications.

Table 3-1 TPS92205xEVM Electrical Performance Specifications
ParameterTest ConditionsMINTYPMAXUnits
Input voltage range, VIN4.560V
LED forward voltageSingle white LED3V
Output voltage range, VOUTLED+ to LED–, depends on VIN60V
Output current3.3V, 100% duty, PWM input on ADIM/HD pin (TPS922055DMTREVM, TPS922055DRRREVM)

4

A

3.3V, 100% duty, PWM input on ADIM/HD pin (TPS922053DYYREVM)

2

A

Output current rippleVIN = 48 V, 7 white LEDs, 4-A output current100mApp
Analog dimming range3.3-V PWM at ADIM/HD pin1100%
Analog dimming frequency0.1100kHz
PWM dimming range3.3-V PWM at PWM/EN pin1100%
PWM dimming frequency0.150kHz
Switching frequency400kHz
EfficiencyVIN = 48 V, 7 white LEDs, 4-A output current95%