SLUUBM0D May   2017  – October 2020 TPS92518 , TPS92518-Q1 , TPS92518HV , TPS92518HV-Q1

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Typical Applications
    2. 1.2 Connector Description
  3. 2Performance Specifications
  4. 3Performance Data and Typical Characteristic Curves
    1. 3.1 Startup Waveforms
      1. 3.1.1 Startup After SPI Enable Command
      2. 3.1.2 Startup on Hardware Enable Pin Transition
    2. 3.2 Shutdown Waveforms
      1. 3.2.1 Shutdown After SPI Disable
      2. 3.2.2 Shutdown After Hardware Enable Pin Transition
    3. 3.3 Current Sharing
    4. 3.4 Diode and Boot Capacitor Current
      1. 3.4.1 Diode, Inductor, and Boot Capacitor Current at Low Output Current
      2. 3.4.2 Diode, Inductor, and Boot Capacitor Current at High Output Current
      3. 3.4.3 Shunt FET Dimming
      4. 3.4.4 Undervoltage Lockout Description
  5. 4Schematic, PCB Layout, and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Layout
    3. 4.3 Bill of Materials
  6. 5Software
    1. 5.1 TPS92518 Demonstration Kit Software Installation
      1. 5.1.1 Windows 10
  7. 6Use of LEDSPIMCUEVM-879 Microcontroller Board for SPI Communications with the TPS92518
  8. 7Revision History

3 Performance Data and Typical Characteristic Curves

Figure 3-1 through Figure 3-4 illustrate the performance data and typical characteristic curves.

GUID-F133B84A-C0CA-4984-8C98-A53890945CEA-low.gif
Conditions: VIN 50 V, peak threshold = 50, minimum off-time = 127
Figure 3-1 Frequency vs Output Voltage
GUID-8FD56AB1-B619-4BE6-A9C2-AECD897130AF-low.gif
Conditions: VIN= 50 V, VLED = 24.7 V, peak threshold = 120, minimum off-time = 127
Figure 3-2 Efficiency Over Temperature at Different Peak Threshold Settings
GUID-E744476E-6A05-4F99-8D2F-8EE0D9933393-low.gif
VIN = 12 V, VLED = 3 V, peak threshold = 127, off time = 127
Figure 3-3 PWM Dimming, Multiple PWM Frequencies, Both Channels
GUID-18225A5F-9421-450A-8FC6-90ED92B43591-low.gif
VIN = 12 V, VLED = 3 V, peak threshold = 127, off time = 127
Figure 3-4 Single-Channel PWM Dimming at 400 Hz