TLE 6363 Infineon Technologies, TLE 6363 Datasheet - Page 17

• Manufacturer Part Number: TLE 6363
• Manufacturer: Infineon Technologies

Specifications of TLE 6363

• Packages: P-DSO-14
• Comment: Please use RoHS compliant TLE6711
• Vq (max): 5.0V
• Iq (max): 250.0 mA
• Iq (typ): 1,500.0 µA
• Output: Boost/Buck Conv.

Figure 6
Figure 7 shows the most important waveforms during operation; for low, medium and
high loads up to overload condition. The output transistor is switched off immediately if
the overcurrent comparator detects an overcurrent level at the power DMOS or if the
sense output switches to low induced by a
The TLE 6363 is also protected against several boost loop errors:
In case of a feedback interruption a pull up current source (
pin BOFB pulls the voltage at the feedback pin BOFB above the reference voltage. The
boost output is switched off by the high error voltage which controls the
PWM-Comparator at a zero duty cycle.
In the case of a resistive loop error caused by leakage currents to ground, the boost
output voltage would increase to very high values. In order to protect the
well as the external load against catastrophic failures, an overvoltage protection is
provided which switches the output transistor off as soon as the voltage at pin
exceeds the internal fixed overvoltage threshold
Data Sheet Rev. 1.2
V
Boost
BOFB
Pin 12
R
Pin 1
10
V
2.8 V
V
thUV
4 V
REF
µ
A
GND
GND
I
GND
Pullup
=
=
=
V
38 V
thOV
OV
COMP
UV
COMP
Error
AMP
-
-
-
+
+
+
L when
OV at
L when
T
Boost Converter Block Diagram
j
H when
V
H when
Overcurrent
> 175 ˚C
Boost
Oscillator
V
V
V
max
Boost
min
< 4 V
NAND 3
t
r
&
t
f
t
r
H when
T
or OV at
t
j
> 175 ˚C
NOR 1
1
Ramp
V
Boost
L when
Error
NAND1
Schmitt-trigger 1
&
V
V
high
low
R
S
t
Error-FF
r
t
&
&
f
Error-Signal
Error-Ramp
t
r
Q
Q
17
t
V
H when
Error
BOOST
Clock
H when Outputcurrent > 1.2 A
PWM
COMP
Error
Gate
NOR 2
-
+
V
1
BOOVOFF
undervoltage command.
NAND 2
H when
Error-Signal
<
Error-Ramp
&
Detector
Unlock
R
S
= typ. 37 V.
I
PWM-FF
FB
&
&
typ. 0.4 µA), integrated at
Q
Q
H =
OFF
OC
COMP
INV
1
-
+
H =
ON
V
BOOST
Gate
Driver
V
18 mV
Boost Status
Low if Battery
Disconnected
thOC
TLE 6363
2003-06-02
BOI
Pin 14
input as
V
Power
D-MOS
14.5 m
R
BOOST
BOGND
Pin 13
AEB02946
Sense
OVL
Pin 11
GND
Ω