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Active Backup Solution for 12 V systems

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EDLCBU-12V

The EDLCBU-12V is a reference design that illustrates the implementation of a high-current supercapacitor backup solution. This solution is based on Vishay EDLC supercapacitors and the Analog Devices LTC3350IUHF high-current supercapacitor backup controller and system monitor. 

The circuit consists of a high-efficiency synchronous step-down and step-up constant current/constant voltage converter. It is capable of charging and discharging an array of six parallel, four-series-connected supercapacitors, depending on the application requirements. 

High-power resistors play a crucial role in balancing voltages within the supercapacitor stack during the charging process. Voltage levels for backup voltage and power fail voltage threshold can be configured within a range similar to that of 12V automotive applications. The circuit provides the function of a high-current 12V ride-through uninterruptible power supply (UPS). 

Reference Design Files

Datasheet

The EDLCBU-12V is a reference design that illustrates the implementation of a high-current supercapacitor backup solution. This solution is based on Vishay EDLC supercapacitors and the Analog Devices LTC3350IUHF high-current supercapacitor backup controller and system monitor. 

The circuit consists of a high-efficiency synchronous step-down and step-up constant current/constant voltage converter. It is capable of charging and discharging an array of six parallel, four-series-connected supercapacitors, depending on the application requirements. 

High-power resistors play a crucial role in balancing voltages within the supercapacitor stack during the charging process. Voltage levels for backup voltage and power fail voltage threshold can be configured within a range similar to that of 12V automotive applications. The circuit provides the function of a high-current 12V ride-through uninterruptible power supply (UPS). 

Reference Design Files

Datasheet

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EDLCBU-12V

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EDLCBU-12V Bottom

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Features

high-current 12V ride-through uninterruptible power supply (UPS)

Super-capacitor-based energy storage

Integrated monitoring via digital interface

Configurable voltage thresholds

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