数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

L6981 数据表(PDF) 39 Page - STMicroelectronics

部件名 L6981
功能描述  38 V, 1.5 A synchronous step-down converter with low quiescent current
PDF  49 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6981 数据表(HTML) 39 Page - STMicroelectronics

Back Button L6981 Datasheet HTML 35Page - STMicroelectronics L6981 Datasheet HTML 36Page - STMicroelectronics L6981 Datasheet HTML 37Page - STMicroelectronics L6981 Datasheet HTML 38Page - STMicroelectronics L6981 Datasheet HTML 39Page - STMicroelectronics L6981 Datasheet HTML 40Page - STMicroelectronics L6981 Datasheet HTML 41Page - STMicroelectronics L6981 Datasheet HTML 42Page - STMicroelectronics L6981 Datasheet HTML 43Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 39 / 49 page
background image
Figure 45. Switching losses
It is also possible to estimate the junction temperature directly from the efficiency measurements acquired on a
stationary application condition.
Considering that the power losses are given by:
PLOSS=PIN−POUT
(49)
Neglecting the AC losses of the selected inductor, the power losses related to the L6981 are given by:
PLOSS L6981=VIN∙IIN−VOUT∙IOUT−DCRl∙IOUT2
(50)
Consequently, the junction temperature TJ can be calculated as:
TJ=TA+RtℎJA∙PLOSS, L6981
(51)
L6981
Thermal dissipation
DS13554 - Rev 1
page 39/49



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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