Texas Instruments TPS92520EVM-133, Руководство пользователя

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6.4.1 Channel 1 or 2 Sub-Window: Settings, Measurements, and Faults
The Channel Sub-Window is broken down into basic features and settings set by selecting boxes or slide,
measurements of V
IN
and LED, and fault status boxes (see Figure 6-15 ).
Figure 6-15. Channel 1 Window - Configurations, Measurement, and Fault Window
There are three slide bars that can be adjusted. The Analog Current bar sets the CHxIADJ registers to control
the reference voltage (V
IADJ
) used for setting the LED current of that channel. It has a decimal value from 0 to
1023, which coincides with voltage from 0 to 2.45 V to the V-I Converter, see the LED Current Regulation and
Error Amplifier section of the TPS92520-Q1 data sheet for additional information. The current setpoint is also a
function of the selected current sense resistor. The TPS92520EVM-133 uses a 100-mΩ resistor and to get 1 A at
the output then slide bar must be move to 586 (decimal value), see Figure 6-16 .
0 1023
Figure 6-16. Analog Current Slide Bar
TPS92520EVM-133 Power UP and Operation www.ti.com
44 TPS92520EVM-133 Dual 1.6-A Synchronous Buck LED Driver Evaluation
Module SLUUCC4 – OCTOBER 2020
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