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DEMO MANUAL DC2028A
common Demo BoArD operAtions
Each channel has an LED which visually indicates if the channel has power. When the CONTROL pin is switched on
and off, you will observe the relative on/off timing of the eight channels.
Figure 7. TON_DELAY Configuration
For the LTC2977, the TON_DELAY and TOFF_DELAY values extend to 13.1 seconds, providing very long sequencing
on and off of power supply rails.
WHY AM I OFF? TOOL
Use the Why am I Off? tool in the LTpowerPlay GUI to diagnose the reason a power supply channel is turned off. The
tool can be located in the top right corner of the GUI, above the Register Information tab. Hover your cursor over this
tab to show the tool.
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Figure 9. Why Am I Off? Tool in the LTpowerPlay GUI
Figure 8. TOFF_DELAY Configuration
dc2028af
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