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Description: Polol U3V12F5 - 5V 1.4A step-up converter
A controller that increases the voltage from 2.5 to 5 V to a fixed 5 V value. The efficiency of the inverter is 80 - 90 % depending on the specified input voltage. We also offer modules from this series with 5 V, 9Vand12 V output voltages.
Polol inverter outputs
The module has three outputs:
- VIN- input voltage from 2.5 V to 5 V, please pay attention toshort voltage pulses that can damage the system
- GND- mass potential
- VOUT -output voltage
The connectors are properly signed on the board. 2.54 mm leadout Raster - popular connectorsgoldpin, allow the module to be mounted incontact plateorconnectionby means ofcables.
Inverter system efficiency
Efficiency is defined as the ratio of output power to input power (Power out)/(Power in). This is a very important parameter when working with portable energysources(batteries and accumulators), where the time of operation on one charging cycle counts. The efficiency of this pulse system is about 80 % - 90 %. The output current depends on the input voltage. Details are available in the diagram:
Fig. : Efficiency of the system at 5V output voltage.
Dangerous voltage pulses
When connecting the power supply to the module, dangerous, short, high amplitude eclectic pulses may occur(so-called pins)that could permanently damage the system. Polol's tests show that for voltages above 10 V, the pins may have an amplitude of over 20 V. In order to protect against this undesirable phenomenon it is recommended to solder a capacitor of at least 33uF as close as possible to the pins supplyingthe converter.
Polol U3V12F5 inverter specification
- Input voltage: 2.5 V to 5 V
- Output voltage: 5 V
- Maximuminputcurrent: 1,4 A
- Output current: dependent on input voltage -see graph
- Efficiency of 80 - 90 %
- Integrated shutdown system for inverters at too high an operating temperature
- Protection against under-voltage, below 2.7 V the system will switch off
- Dimensions: 13 x 8 x 3 mm
- Weight (without connectors): 2 g
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