Comparison of passive elements: inductance (a); output capacitance
Hybrid hysteretic control, a new patented control method, enables up to 10 times faster transient response and reduces output capacitance
They deliver superior switching performance due to their low gate charge, "flat" output capacitance
, and zero reverse recovery.
Circuit parasitic parameters Total parasitic inductance [L.sub.st] 22.5 nH Parasitic capacitances [C.sub.sH], [C.sub.sL] 10 pF, 30 pF Common inductance [L.sub.sc] 1 nH Gate inductance [L.sub.sg] 3 nH Gate resistance [R.sub.g] 3 [OMEGA] GaN-HEMT [Q.sub.Xak], [Q.sub.Xbk] for free-wheeling diode [D.sub.k] On-resistance 150 mn Output capacitance
110 pF@ 100 V Breakdown voltage 600 V GaN-FET [Q.sub.k] On-resistance 50 m[OMEGA] Output capacitance
110 pF@ 100 V Breakdown voltage 200 V Table 4: Parameters for inductor design installed into cell converter.
For the output capacitance
of GaN HEMT (GS66516T) and Silicon MOSFET (STY139N65M5), refer to their respective datasheets.
The NCP51200 maintains a fast transient response and only requires a minimum output capacitance
Power switches are turned on under ZVS during the transition interval based on the transformer leakage inductance and the switch output capacitance
(Kim et al 2010).
Capacitance Technology process (nm) 90 65 45 16 [C.sub.cu] (pF/m) 252.32 206.60 170.03 116.99 [C.sub.gnr] (pF/m) 226.87 185.70 152.76 105.01 TABLE 6: Load and output capacitance
for logic gates NOT, two-input NAND, two-input NOR, three-input NAND, and three-input NOR.
Each stage maintained same value of 1 [mu]F except for the output capacitance
before load, in which we evaluate with a smaller 1 nF capacitance to increase the speed of the transient response .
1, where [C.sub.t] is the total output capacitance
([C.sub.ds]) of the transistor and external capacitance ([C.sub.ex]) needed for the design to get an optimum class E operation.