STEVAL-ISV009V1 STMicroelectronics, STEVAL-ISV009V1 Datasheet - Page 31

• Manufacturer Part Number: STEVAL-ISV009V1
• Description: Power Management Modules & Development Tools DUAL STG DC/AC CNVRT DEMO BRD
• Manufacturer: STMicroelectronics
• Series: -r

Specifications of STEVAL-ISV009V1

• Design Resources: STEVAL-ISV009V1 BOM STEVAL-ISV009V1 Schematic
• Main Purpose: DC/DC, Step Up
• Outputs And Type: 1, Non-Isolated
• Power - Output: -
• Voltage - Output: 36V
• Current - Output: -
• Voltage - Input: -
• Regulator Topology: Boost
• Frequency - Switching: -
• Board Type: Fully Populated
• Utilized Ic / Part: SPV1020
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN3392
13.1
13.2
Power and thermal considerations
SPV1020 performances are strongly impacted by the power capability of the PWSSO36
package, which depends from the application board as well. According to the technical note
TN0054 R
"2s2p" multi-layer board, thermal vias and metal plate (external heat-sinker).
Starting from this value it is possible to calculate the P
The SPV1020 efficiency (
ambient temperature (T
So, the P
If the package is soldered onto a “2s2p” multi-layer board with Thermal vias, the R
20°C/W and the P
Inductor selection
Inductor selection is a critical point for this application.
Inductor selection must take into account the following application constraints:
●
●
●
●
Input current from the PV panel will be split between the 4 inductors of each branch, so:
According to
depend on the applied voltage (Vin), on the inductance (Lx) and on the time (Ton).
Maximum input current (i.e. Imp and Isc of the PV panel);
Maximum input voltage (i.e. Vmp and Voc of the panel)
Overcurrent threshold of SPV1020.
Maximum duty cycle of SPV1020 (90%).
MAX
TH(j-a)
Figure
is:
of PwSSO36 can be reduced up 10 °C/W if the package is soldered onto a
MAX
6, during charge phase (switch ON), peak current on each inductor will
is 138W.
AMB
η
) is
) for photovoltaic application is 85°C.
Doc ID XXXXX Rev 1
≥
98%; the thermal shutdown threshold is 140°C; typical
T
I
J
P
P
Lx
MAX
=
P
D
(
D
T
rms
=
AMB
=
T
----------------------- - 5.5W
=
R
(
J
)
TH j a
1 η
----------------- 275W
(
–
1 η
+
≅
T
–
P
(
–
R
AMB
D
–
I
TH j a
) P
m p
4
)
⋅
)
(
⋅
⋅
–
MAX
<
)
Isc
MAX
⋅
4
P
D
.
External component selection
TH(j-a)
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is