Unified Approach for Robust Stability Analysis of Buck Converters with Discrete-Time Sliding Mode Control

Table 2

Performance comparisons with nine pairs of (h, λ).

h	Λ	Label	Response time (ms)	Steady error (mV)	Relative steady error
1 ms	15	A1	4	3.902	0.434‰
	60	A2	4	3.902	0.434‰
	250	A3	4	3.902	0.434‰
0.5 ms	15	A4	9.5	0.465	0.052‰
	60	A5	8	0.465	0.052‰
	250	A6	6.5	0.465	0.052‰
0.25 ms	15	A7	20.5	0.057	0.006‰
	60	A8	15.8	0.057	0.006‰
	250	A9	7.5	0.057	0.006‰
0.5 ms (disturbance)	15	B1	9.5	112	1.244%
	60	B2	8	84	0.933%
	250	B3	6.5	67	0.744%