参数资料
型号: TLE6361GV1
厂商: INFINEON TECHNOLOGIES AG
元件分类: 稳压器
英文描述: 2.4 A SWITCHING REGULATOR, 410 kHz SWITCHING FREQ-MAX, PDSO36
封装: HEAT SLUG, PLASTIC, DSO-36
文件页数: 4/42页
文件大小: 687K
代理商: TLE6361GV1
TLE 6361 G
Target Datasheet, Version 1.0
12
17.01.2001
3.11
Window Watchdog
The window watchdog logic is triggered when CS is low and Bit WD-Trig is set 1. To allow
reading the SPI at any time the WD-Trig bit has to be set 0 to avoid false trigger
conditions. To disable the window watchdog the WD-OFF bits need to be set 010.
Figure 5 Window Watchdog Timing Definition
t
open= tCW (1+α)
closed window
open window
tCW=tCW
definition
fOSC=fOSCmax
reset start delay time after window
watchdog timeout
reset delay time without trigger
reset duration time after window
watchdog time-out
tSR= tOW/2
tOW=tCW
tWDR = tRES
t OWmin
fOSC=fOSCmin
definition
worst case
t open= ( tCW+ tOW) (1 -=α)
t WD
t OWmin= tOW - α * ( tOW + 2* tCW )
Example with:
tCYL=1ms, NW=16
α
=25% (oscillator deviation)
towmin results to:
towmin = 16ms - 0,25 * (16ms+32ms)
towmin = 4ms
not the same scale
Worst case open window time:
t EOW= end of open window
tECW
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