Design Consideration for High Step-Up Nonisolated Multicellular dc-dc Converter for PV Micro Converters

Table 1

Parameters for circuit simulation of nonisolated multicellular converter.

Multicellular converter
Input voltage	20 V to 40 V
Output voltage	384 V
Output power	240 W
Connection topology	Input Parallel Output Series
Number of cells	3 ()
Single cell converter
Input voltage	20 V to 40 V
Output voltage	128 V
Output power	80 W
Transistor	GaN-FET (50 mΩ, 200 V); = 110 pF @ 100 V
Bidirectional switches; ,	Two GaN-HEMTs (150 mΩ, 600 V); = 145 pF @ 100 V; connected in antiseries
Input capacitor	MLCC (52.3 μF, 63 V)
Output capacitor	MLCC (1.37 μF, 200 V)
Input inductor	Mn-Zn ferrite (68.8 μH)
Switching frequency	100 kHz
Parasitic inductance	22.5 nH