TLE6361G Infineon Technologies, TLE6361G Datasheet - Page 14

• Manufacturer Part Number: TLE6361G
• Description: IC PS SYSTEM MULTI VOLT PDSO-36
• Manufacturer: Infineon Technologies
• Type: Step-Down (Buck)r

Specifications of TLE6361G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 4
• Voltage - Output: 5.4 ~ 6.05 V
• Current - Output: 1.5A
• Frequency - Switching: 370kHz
• Voltage - Input: 5.5 ~ 60 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-36
• Output Voltage: 5.5 V
• Output Current: 1.5 A
• Input Voltage Max: 60 V
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 150 C
• Output Voltage Tolerance: +/- 10 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000013297; TLE6361GNT; TLE6361GT

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 is the maximum
(w.c.) 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, Rev. 2.0
worst cases
definition
definition
f
f
OSC
OSC
=f
=f
OSCmax
OSCmin
t
Minimum open window time:
t
EOW, w.c.
closed window
ECW, w.c.
t
CW
=t
= ( t
= t
CW
CW
CW
(1+ )
+t
t
ECW
OW
)(1- )
open window
t
OWmin
t
OW
=t
CW
t
t
OWmin
EOW
reset start delay time after window
= end of open window
= t
reset delay time without trigger
OW
(not the same scale)
-
14
watchdog timeout
* ( t
t
SR
OW
= t
OW
+ 2* t
/2
CW
)
Example with:
t
t
t
t
CW
ECW, w.c.
EOW, w.c
owmin
=25% (oscillator deviation)
=128ms
reset duration time after window
(not the same scale)
= 128(1.25) = 160ms
= 32ms
= (128+128)(0.75) = 192ms
watchdog time-out
t
WDR
= t
TLE 6361 G
RES
2005-03-01