TLE 6365
Diagrams: Oscillator and Boost/Buck-Converter Performance
In the following the behaviour of the Boost/Buck-converter and the oscillator is shown.
Efficiency Buck vs.
Boost Voltage
Oscillator Frequency Deviation vs.
Junction Temperature
AED03017
AED03016
95
10
kHz
%
η
∆fOSC
90
Referred to fOSC
at j = 25 ˚C
5
0
V
CC = 5 V
T
85
80
75
70
65
I
Load = 120 mA
-5
80 mA
-10
-15
40 mA
5
15
25
V
30
-50 -25
0
25 50 75 100 ˚C 150
VS
Tj
Feedback Voltage vs. Junction
Temperature
Buck Overcurrent Threshold vs.
Junction Temperature
AED03356.VSD
5.15
V
AED03018
1.4
A
VCC
IOC
5.10
5.05
5.00
4.95
4.90
4.85
4.80
1.3
1.2
1.1
1
I
BUO = 400 mA
I
BUOC (Buck-Converter)
0.9
0.8
-50 -25
0
25 50 75 100 ˚C 150
-50 -25
0
25 50 75 100 °C 150
Tj
Tj
Data Sheet
14
Rev. 1.9, 2007-07-30
INFINEON [ Infineon ]
