SLUUBZ9 May   2020 TPS92200

 

  1.   TPS92200D1/D2EVM 30-V, 1.5-A Buck LED Driver Evaluation Module
    1.     Trademarks
    2. 1 Introduction
    3. 2 Warnings and Cautions
    4. 3 Description
      1. 3.1 Typical Applications
      2. 3.2 Test Setup
        1. 3.2.1 Connector Description
        2. 3.2.2 Input/Output Connection
    5. 4 Performance Data and Typical Characteristics Curves
      1. 4.1 Efficiency
      2. 4.2 Line Regulation
      3. 4.3 Load Regulation
      4. 4.4 Analog Dimming
      5. 4.5 PWM Dimming Waveforms
    6. 5 Schematic
    7. 6 TPS92200D1/D2EVM PCB Layout
    8. 7 Bill of Materials

3.1 Typical Applications

This converter design describes an application of the TPS92200D1/D2 as an LED driver using the following specifications. For applications with a different input voltage range or different output voltage and current, see the TPS92200D1/D2 data sheet (SLUSER4).

Table 1 lists the electrical performance specifications.

Table 1. TPS92200D1/D2EVM Electrical Performance Specifications

Parameter Test Conditions MIN TYP MAX Units
Input voltage range, VIN 4.0 30 V
Output voltage range, VOUT LED+ to LED–, depends on VIN 1 <30 V
Output current 3.3V, 100% duty PWM input 0.5 A
Output current ripple VIN = 24 V, 6 White LEDs, 1-A output current 10 mApp
Analog dimming range 1.2V Analog input(TPS92200D1EVM) 1.2 V
Analog dimming range 3.3-V PWM amplitude, 50 kHz(TPS92200D2EVM) 1 100 %
PWM dimming range 1.2-V PWM amplitude, 100 Hz, VIN = 24 V, 6 White LEDs, 1-A output current(TPS92200D1EVM) 1 100 %
Efficiency VIN = 12 V, 5 IR LEDs, 1.5 A output current, Analog dimming mode 96 %
Switching frequency 1000 kHz