Performance Data and Typical Characteristic Curves
www.ti.com
8
SLUUBM0 – May 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TPS92518EVM Dual Buck Controller Evaluation Module
3.3
Current Sharing
The TPS92518 device can be set up to share current with both channels driving a single load.
V
IN
= 65 V, driving 1 LED for a V
LED
of 3.0062 V, with a peak threshold = 45 to get approximately a 225-mA LED
current, showing max and mean inductor currents on channels 1 and 2
Figure 9. Current Sharing
3.4
Diode and Boot Capacitor Current
3.4.1
Diode, Inductor, and Boot Capacitor Current at Low Output Current
Showing inductor current into the LED and current flow through the catch diode and boot capacitor used for supplying
gate drive power. V
IN
= 65 V, V
LED
= 23 V, T
OFF
register setting = 50, peak threshold register setting = 1
Figure 10. Switch Node Current