STEVAL-ISV006V1 STMicroelectronics, STEVAL-ISV006V1 Datasheet - Page 19

• Manufacturer Part Number: STEVAL-ISV006V1
• Description: IC LINEAR
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISV006V1

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11418

AN3319
Appendix A
Output pins of many SPV1040s can be connected either in parallel or in series. In both
cases the output power (Pout) depends on light irradiation of each panel, on application
efficiency, and on the specific constraints of the selected topology.
The objective of this section is to explain how the output power is impacted by the selected
topology.
An example with 3 PV panels (Panel1, Panel2, Panel3) is presented, but the conclusion can
be extended to a larger number of PV panels.
If the panel is lighted and the SPV1040 is on (it means that light irradiation intensity is such
that V
If the panel is completely shaded: P
SPV1040 parallel connection
This topology guarantees the desired output voltage even when only one panel is irradiated.
The obvious constraint of this topology is that Vout is limited to the SPV1040 maximum
output voltage.
Figure 15
Figure 15. SPV1040 output parallel connection
The output partitioning (R1/R2) of each SPV1040 must be coherent with the desired Voutx.
According to the topology:
Vout=Vout1=Vout2=Vout3
Iout=Iout1+Iout2+Iout3
Poutx
MPP-SET
=
η
shows the parallel connection topology:
Pinx
SPV1040 parallel and series connection
≥ 0.3 V):
x [ =
PV3
PV2
PV1
1
..
] 3
Doc ID 18265 Rev 1
outx
=0
PV3+
PV2+
PV1+
PV2
PV2-
PV1-
PV3-
SPV1040
SPV1040
SPV1040
SPV1040
SPV1040 parallel and series connection
Vo3+
Vo2+
Vo1+
Vo3-
Vo2-
Vo1-
Vout+
Vout-
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