參數(shù)資料
型號(hào)： TLE6363G
廠商： INFINEON TECHNOLOGIES AG
英文描述： Multifunctional Voltage Regulator and Watchdog
中文描述： 多功能穩(wěn)壓器和看門(mén)狗
文件頁(yè)數(shù)： 20/28頁(yè)
文件大小： 278K
代理商： TLE6363G
TLE 6363
Data Sheet V 1.1
20
2000-11-8
Figure 8
Buck Converter Block Diagram
External loop compensation is required for converter stability, and is formed by
connecting a compensation resistor-capacitor series-network (
R
BUC
,
C
BUC
) between pin
BUC and GND.
In the case of overload or short-circuit at
V
CC
(the output current exceeds the buck
overcurrent threshold
I
BUOC
) the DMOS output transistor is switched off by the
overcurrent comparator immediately. The pulse width is then controlled by the
overcurrent comparator as seen before in the boost description.
In order to protect the
V
CC
input as 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
V
CC
exceeds the internal fixed overvoltage threshold
V
BUOVOFF
= typ.
6.0 V.
AEB02947
-
+
=
V
1.2 V
VCC3
R
39.7
VCC4
10.3
R
GND
BUC
Pin 6
V
Pin 7
V
CC
2.8 V
V
-
+
VCC1
22
VCC2
28
R
R
GND
=
CC
V
Error
AMP
R
Prot1
200
COMP
PWM
+
-
Error-
Signal
r
t t
f
t
r
max
V
V
min
t
Pin 1
R
V
high
V
low
t t
r
f
t
r
t
Error-
Ramp
Oscillator
Schmitt-trigger 1
H when
Error-Signal
<
Error-Ramp
&
&
R
S
Q
Q
L when
> 175
C
j
T
Clock
Error-FF
NOR 1
1
H when
OV at
V
CC
L when
Overcurrent
Output Stage
OFF when H
OFF when H
OV
COMP
&
S
NAND 2
&
Q
Q
&
R
PWM-FF
1
INV
OFF
ON
Gate
Driver
Power
D-MOS
Boost
Driver
Supply
BDS
Pin 10
Pin 8
BUO
COMP
UV
+
-
H when
UV at
Boost
V
=
GND
thUV
4 V
V
GND
H =
H =
OC
COMP
+
-
=
V
18 mV
L when
Overcurrent
Pin 9
V
R
18 m
GND
Ramp
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