AN3392 datasheet(43/57 Pages) STMICROELECTRONICS

Part #	AN3392

Description	The SPV1020 is a monolithic DC-DC boost converter designed

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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43 / 57 page

AN3392

SPV1020 parallel and series connection

Doc ID 018749 Rev 1

43/57

B.1

SPV1020 parallel connection

This topology guarantees the desired output voltage even if only one of the panels is

irradiated. Of course, the constraint of this topology is that VOUT is limited to the SPV1020

voltage ratings.

The following figure shows a detail of the parallel connection topology:

Figure 28.

SPV1020, output parallel connection

The output partitioning (R3/R4) of the three SPV1020s must be in accordance with the

desired VOUT.

According to the topology:

Equation 32

Equation 33

According to the light irradiation on each panel (Pin) and to the system efficiency (

η), output

power is:

Equation 34

Equation 35

Vout

Vout1

Vout2

Vout3

Iout

Iout1

Iout2

Iout3

Pout

Pout1

Pout2

Pout3

Poutx

Voutx

Ioutx x

1..3

[]

⋅

AN3392 Datasheet(PDF) 43 Page - STMicroelectronics