The usual electrolyte is ammonium bromide in methanol, at − 5 °C, using an undivided cell with either platinum or graphite as anode and a nickel or stainless steel cathode. Reaction involves the anodic generation of bromine, which oxidises the furan to a carbonium ion intermediate that is...
Equation 2: CBOOT ≥ Qtotal ∆ VBOOT Qtotal = Qg + IQBG × DMAX fSW + IQHS fSW (2) (3) where: • Qg is the total gate charge for the high-side GaN FET • IQBG is the BOOT to AGND quiescent current • DMAX is the maximum duty cycle • IQHS is the high-side ...
Using the gate charge Qg, determine the power that must be dissipated when switching a capacitor which is calculated using the equation QG = CLOAD × VDD to provide Equation 15 for power. PG = CLOAD × VDD2 × fSW = QG × VDD × fSW (15) This power PG is dissipated in the ...
(1) VHS is calculated in Equation 2: VHS = –IL × RDSON where • IL is the inductor current defined as flowing out of the half-bridge • and RDSON is the FET on resistance. (2) Substituting (2) into (1) gives the expression for the bootstrap voltage as Equation 3: VBST = ...
7.2.2.5 Power Dissipation Power dissipation of the gate driver has two portions as shown in Equation 1. PDISS = PDC + PSW Use Equation 2 to calculate the DC portion of the power dissipation (PDC). (1) PDC = IQ × VDD (2) where • IQ is the quiescent current for the driver. ...
Next, use Equation 3 to estimate the minimum bootstrap capacitor value. (2) CBOOT :min ; = QTOTAL ¿VHB = 52.43 nC = 2.6 V 20.16 nF (3) The calculated value of minimum bootstrap capacitor is 20.16 nF. It should be noted that, this value of capacitance is needed at full bias ...
7.2.2.5 Power Dissipation Power dissipation of the gate driver has two portions as shown in Equation 1. PDISS = PDC + PSW (1) The DC portion of the power dissipation is PDC = IQ x VDD where IQ is the quiescent current for the driver. The quiescent current is the current consumed by...
Using the gate charge Qg, determine the power that must be dissipated when switching a capacitor which is calculated using the equation QG = CLOAD × VDD to provide Equation 15 for power. PG = CLOAD × VDD2 × fSW = QG × VDD × fSW (15) This power PG is dissipated in the ...
Using the gate charge Qg, determine the power that must be dissipated when switching a capacitor which is calculated using the equation QG = CLOAD × VDD to provide Equation 5 for power. PG = CLOAD × VDD 2 × fSW = QG × VDD × fSW (5) This power PG is dissipated in the ...
PDISS = PDC + PSW Use Equation 2 to calculate the DC portion of the power dissipation (PDC). (1) PDC = IQ × VDD (2) where • IQ is the quiescent current for the driver. The quiescent current is the current consumed by the device to bias all internal circuits such as input ...