SNVU822 May   2022

 

  1.   Trademarks
  2. 1Introduction
  3. 2Warnings and Cautions
  4. 3Description
    1. 3.1 Typical Applications
    2. 3.2 Features
    3. 3.3 Connector and Test Point Description
    4. 3.4 Electrical Performance Specifications
  5. 4Test Setup
    1. 4.1 Input Supplies and LED Load Connections
    2. 4.2 Analog Duty Cycle Control Using APWM
    3. 4.3 Analog Dimming Using IADJ
    4. 4.4 PWM Dimming Using nExt_PWM Test Points
    5. 4.5 Switching Frequency Set Point Using RON
  6. 5Performance Data and Typical Characteristic Curves
    1. 5.1 Efficiency
    2. 5.2 Analog Dimming
    3. 5.3 PWM Dimming
    4. 5.4 PWM Dimming Waveforms
  7. 6Schematic
  8. 7TPS92643EVM-204 PCB Layout
  9. 8Bill of Materials

3.4 Electrical Performance Specifications

Table 3-3 lists the EVM electrical performance specifications. This configuration is designed for driving up to 3 A to 1-3 LEDs with an input voltage range of 10 V to 36V. This configuration is also designed to operate at approximately 400 kHz for optimized efficiency. The device can operate at lower input voltage, but this EVM is setup to meet the following parameters.

Table 3-3 TPS92643EVM-204 Performance Specifications
ParameterDescriptionMinTypMaxUnits
Input Characteristics
Voltage, VIN

10

14

36

V
Maximum input current, IIN

4.0

A
Output Characteristics
Output voltage, VOUTThis EVM was tested with 1 to 3 LEDs that had a voltage range of 2.5 V to 9.5 V for a current range of 0.2 A to 3.0 A.VIN

30

V
Maximum output current, IOUTTotal output current is designed for 0.2 A to 3.0 A.

3.0

A
Maximum output power, POUTTotal output power20W
Systems Characteristics
Switching frequency

RON = 267 k Ohms

440

kHz
Peak efficiency96%
Operating temperature

NOTE: Maximum temperature range is based on total power dissipation.

–4025125°C