MIKROE-957 mikroElektronika, MIKROE-957 Datasheet - Page 53

• Manufacturer Part Number: MIKROE-957
• Description: Other Development Tools ASLK PRO ANALOG DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-957

• Rohs: yes
• Product: Analog System Lab Kit PRO
• Tool Is For Evaluation Of: TL082, MPY634
• Operating Supply Voltage: 2.5 V to 5.5 V
• Description/function: Analog Lab Kit for Undergraduate Engineering
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C

9.4 What should you submit
9.5 Exercise Set 9
Perform the same experiment with the specialized IC for DC-DC converter from
Texas Instrument TPS40200 and compare the characteristics of both systems.
1
2
3
4
Table 9.1: Variation of output voltage with reference voltage in a DC-DC converter
Analog System Lab Kit PRO
Simulate the circuits and obtain the time response and transfer characteristics
of the system.
Take the plots of transfer characteristics and time response from oscilloscope
and compare it with simulation results.
Plot the average output voltage
obtain the plot; the plot will be linear.
Plot the duty cycle
plot, the plot will be linear. We have included the typical output waveform of
the SMPS circuit in Figure 9.2
Table 9.2: Variation of duty cycle with reference voltage in a DC-DC converter
S.No.
S.No.
1
2
3
4
1
2
3
4
Reference Voltage
Reference Voltage
V
V
T
T
V
!
V
x
f
x
T
x
T
ref
av
av
p
V
=
V
=
ss
=
T
ref
as a function of reference voltage
1
-
2
1 1
_
f
V
ref
-
$
V
V V
ss
ref
V
V
T
T
V
!
V
T
T
x
f
x
x
p
ref
av
av
V
=
V
V
=
ss
=
T
p
as a function of reference voltage
ref
p
1
i
-
2
1 1
_
f
V
ref
-
$
V
V V
ss
ref
V
p
p
i
Duty Cycle
Output Voltage
V
V
T
T
V
!
V
x
x
T
x
T
f
ref
av
av
p
V
=
V
=
ss
T
=
ref
and obtain the
1
V
V
T
T
V
!
V
x
2
-
x
T
x
T
1 1
f
ref
av
av
p
V
_
f
=
V
V
=
T
ss
=
ref
ref
1
-
-
1 1
2
$
V
V V
_
V
V
T
T
V
!
V
x
f
T
T
f
x
x
V
ss
ref
ref
av
av
p
V
ref
=
V
-
=
T
ss
=
and
ref
V
$
1
p
V V
V
p
-
1 1
2
i
ref
ss
_
f
V
ref
V
-
p
p
$
i
V V
V
ref
ss
V
p
p
i
V
+
G1
V
2
Figure 9.2: (a) SMPS Circuit (b) Output Waveforms
+
U
1
R
3
U
2
V
F1
R
4
L
C
1
R
1
R
2
page 53
V
F2