Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
STD110NH02L Datasheet(PDF) 9 Page - STMicroelectronics |
|
STD110NH02L Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 11 page 9/11 STD110NH02L SW1 SW2 APPENDIX A Buck Converter: Power Losses Estimation The power losses associated with the FETs in a Synchronous Buck converter can be estimated using the equations shown in the table below. The formulas give a good approximation, for the sake of performance comparison, of how different pairs of devices affect the converter efficiency. However a very important parameter, the working temperature, is not considered. The real device behavior is really dependent on how the heat generated inside the devices is removed to allow for a safer working junction temperature. The low side (SW2) device requires: • Very low RDS(on) to reduce conduction losses • Small Qgls to reduce the gate charge losses • Small Coss to reduce losses due to output capacitance • Small Qrr to reduce losses on SW1 during its turn-on • The Cgd/Cgs ratio lower than Vth/Vgg ratio especially with low drain to source voltage to avoid the cross conduction phenomenon; The high side (SW1) device requires: • Small Rg and Ls to allow higher gate current peak and to limit the voltage feedback on the gate • Small Qg to have a faster commutation and to reduce gate charge losses • Low RDS(on) to reduce the conduction losses. |
Número de pieza similar - STD110NH02L |
|
Descripción similar - STD110NH02L |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |