công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
STD38NH02L bảng dữ liệu(PDF) 10 Page - STMicroelectronics |
|
STD38NH02L bảng dữ liệu(HTML) 10 Page - STMicroelectronics |
10 / 12 page STD38NH02L 10/12 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. |
Số phần tương tự - STD38NH02L |
|
Mô tả tương tự - STD38NH02L |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |