参数资料
型号: TLE6368R
厂商: Infineon Technologies
文件页数: 14/59页
文件大小: 0K
描述: IC PS SYSTEM MULTI VOLT PDSO-36
标准包装: 800
应用: 电源,汽车应用
输入电压: 5.5 V ~ 60 V
输出数: 3
输出电压: 2.6V,3.3V,5V
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: 36-BSSOP(0.433",11.00mm 宽)裸露焊盘
供应商设备封装: PG-DSO-36
包装: 带卷 (TR)
配用: DEMOBOARDTLE6368IN-ND - BOARD DEMO FOR TLE 6368
其它名称: SP000014666
TLE6368RNT
TLE6368RT
TLE 6368 / SONIC
t SR = t OW /2
t WDR = t RES
t CW =t CW
t OW =t CW
(not the same scale)
(not the same scale)
definition
definition
closed window
t ECW
open window
reset delay time without trigger
reset start delay time after window
watchdog timeout
t EOW = end of open window
reset duration time after window
watchdog time-out
Example with:
f OSC =f OSCmax t EOW, w.c. = ( t CW +t OW )(1- ? )
t CW =128ms
? =25% (oscillator deviation)
worst cases
f OSC =f OSCmin
t ECW, w.c. = t CW (1+ ? )
t ECW, w.c. = 128(1.25) = 160ms
t EOW, w.c = (128+128)(0.75) = 192ms
t OWmin
t owmin
= 32ms
Minimum open window time: t OWmin = t OW - ? * ( t OW + 2* t CW )
Figure 6 Window watchdog timing definition
Figure 6 shows some guidelines for designing the watchdog trigger timing taking the
oscillator deviation of different devices into account. Of importance (w.c.) is the
maximum of the closed window and the minimum of the open window in which the
trigger has to occur.
The length of the OW and CW can be modified by SPI command. If a change of the
window length is desired during the Watchdog function is operating please send the SPI
command with the new timing with a ’Watchdog trigger Bit’ D15=1.In this case the next
CW will directly start with the new length.
A minimum time gap of > 1/48 of the actual OW/CW time between a ’Watchdog disable’
and ’Watchdog enable’ SPI-command should be maintained. This allows the internal
Watchdog counters to be resetted. Thus after the enable command the Watchdog will
start properly with a full CW of the adjusted length.
Data Sheet
14
Rev. 2.2, 2006-12-01
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