Load Current (A)
Ef
fi
ci
ency
(%)
0
3
6
9
12
15
60
65
70
75
80
85
90
95
100
V
IN
= 8V
V
IN
= 12V
V
IN
= 18V
Load Current (A)
Ef
fi
ci
ency
(%)
0
3
6
9
12
15
60
65
70
75
80
85
90
95
100
V
IN
= 8V
V
IN
= 12V
V
IN
= 18V
Test Data and Performance Curves
13
SNVU623B – October 2018 – Revised April 2020
Copyright © 2018–2020, Texas Instruments Incorporated
LM5143-Q1 EVM User's Guide
Implement a two-phase circuit by connecting the outputs together and changing the switch positions to connect SS1
to SS2, COMP1 to COMP2, and MODE to VDDA. Also tie FB2 to AGND.
Figure 10. Two-Phase Regulator Efficiency, V
OUT
= 5 V, FPWM
Figure 11. Two-Phase Regulator Efficiency, V
OUT
= 3.3 V, FPWM
