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STEVAL-ISV004V2 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce STEVAL-ISV004V2
Description  240 W PV converter for photovoltaic panels based on the SPV1020
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STEVAL-ISV004V2 Fiches technique(HTML) 1 Page - STMicroelectronics

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Data brief
For further information contact your local STMicroelectronics sales office.
May 2011
Doc ID 17824 Rev 3
1/4
4
STEVAL-ISV004V2
240 W PV converter for photovoltaic panels
based on the SPV1020
Features
Operating input voltage: 6.5 V to 45 V
Max output voltage: 40 V
Max input current: 8 A
PWM mode DC-DC boost converter
Duty cycle controlled by MPPT algorithm with
0.2% accuracy
Protection against overvoltage, overcurrent
and overtemperature
Built-in soft-start
Up to 98% efficiency
Automatic transition to burst mode for
improved efficiency during low solar radiation
SPI interface
RoHS compliant
Description
The STEVAL-ISV004V2 demonstration board is
based on the SPV1020 monolithic DC-DC boost
converter in a PSSO36 package designed to
maximize the power generated by photovoltaic
panels, independent of temperature and amount
of solar radiation.
Optimization of power conversion is obtained
through embedded logic, which performs the
MPPT (max power point tracking) algorithm
based on monitoring of the voltage and current
supplied by the PV cells.
The precision of the algorithm is guaranteed by a
10-bit ADC for current and voltage sensing.
For cost-effectiveness and miniaturization of the
application, the SPV1020 embeds 8 power
MOSFETs for active switching and synchronous
rectification, minimizing the number of external
components required. The 4-phase interleaved
topology of the DC-DC converter means that
electrolytic capacitors can be avoided, which
would otherwise severely limit system lifetime.
PWM switching (duty cycle varies between 5%
and 90%, with 0.2% accuracy) is regulated by
default at 100 kHz by an internal oscillator, but is
programmable between 50 kHz and 200 kHz via
an external resistor.
Application safety is ensured by stopping the
PWM switching in case of output overvoltage (set
by external trimming), overcurrent (internally
regulated at 4 A for each channel) and over-
temperature (160 oC).
STEVAL-ISV004V2
www.st.com
Obsolete
Product(s)
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